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Prof. Andrea Toscani
University of Parma

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Research Keywords & Expertise

0 Electric Propulsion
0 Energy Conversion
0 Power Conversion
0 Power Electronics
0 Motor Drive

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Motor Drive

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Journal article
Published: 15 May 2021 in Energies
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DC nanogrid architectures with Photovoltaic (PV) modules are expected to grow significantly in the next decades. Therefore, the integration of multi-port power converters and high-frequency isolation links are of increasing interest. The Triple Active Bridge (TAB) topology shows interesting advantages in terms of isolation, Zero Voltage Switching (ZVS) over wide load and input voltage ranges and high frequency operation capability. Thus, controlling PV modules is not an easy task due to the complexity and control stability of the system. In fact, the TAB power transfer function has many degrees of freedom, and the relationship between any of two ports is always dependent on the third one. In this paper we analyze the interfacing of photovoltaic arrays to the TAB with different solar conditions. A simple but effective control solution is proposed, which can be implemented through general purpose microcontrollers. The TAB is applied to an islanded DC nanogrid, which can be useful and readily implemented in locations where the utility grid is not available or reliable, and applications where isolation is required as for example More Electric Aircraft (MEA). Different conditions have been simulated and the control loops are proved for a reliable bus voltage control on the load side and a good maximum power point tracking (MPPT).

ACS Style

Danilo Santoro; Iñigo Kortabarria; Andrea Toscani; Carlo Concari; Paolo Cova; Nicola Delmonte. PV Modules Interfacing Isolated Triple Active Bridge for Nanogrid Applications. Energies 2021, 14, 2854 .

AMA Style

Danilo Santoro, Iñigo Kortabarria, Andrea Toscani, Carlo Concari, Paolo Cova, Nicola Delmonte. PV Modules Interfacing Isolated Triple Active Bridge for Nanogrid Applications. Energies. 2021; 14 (10):2854.

Chicago/Turabian Style

Danilo Santoro; Iñigo Kortabarria; Andrea Toscani; Carlo Concari; Paolo Cova; Nicola Delmonte. 2021. "PV Modules Interfacing Isolated Triple Active Bridge for Nanogrid Applications." Energies 14, no. 10: 2854.

Journal article
Published: 09 February 2021 in IEEE Access
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The arrival on the market of new power devices based on wide bandgap semiconductors has raised a relevant interest due to their superior properties compared to conventional technologies. On the other hand, these devices are inherently characterized by high rates of voltage changes over time, which may result in reliability challenges in electric drives adopting them. In fact, dangerous voltage overshoots at the motor terminals and uneven voltage distributions within the machine windings may occur. These phenomena can trigger a high insulation stress and partial discharges and, as a consequence, they may concur to the premature failure of the dielectric materials. This paper proposes a flexible and comprehensive modelling approach for the accurate analysis and estimation of both voltage overshoots and voltage distributions in a typical converter-cable-motor system intended for more electric aircraft applications. The modelling results are validated against experimental measurements carried out on a physical prototype comprising a wide bandgap-based converter, a connecting cable and an electrical machine stator. The findings are then used in the companion papers (part II and part III) to investigate the dependence of partial discharge phenomena on these voltage waveforms, highlight reliability challenges in modern ±270 V DC bus voltage drives for the more electric aircraft and discuss solutions.

ACS Style

Marco Pastura; Stefano Nuzzo; Fabio Immovilli; Andrea Toscani; Alberto Rumi; Andrea Cavallini; Giovanni Franceschini; Davide Barater. Partial Discharges in Electrical Machines for the More Electric Aircraft—Part I: A Comprehensive Modeling Tool for the Characterization of Electric Drives Based on Fast Switching Semiconductors. IEEE Access 2021, 9, 27109 -27121.

AMA Style

Marco Pastura, Stefano Nuzzo, Fabio Immovilli, Andrea Toscani, Alberto Rumi, Andrea Cavallini, Giovanni Franceschini, Davide Barater. Partial Discharges in Electrical Machines for the More Electric Aircraft—Part I: A Comprehensive Modeling Tool for the Characterization of Electric Drives Based on Fast Switching Semiconductors. IEEE Access. 2021; 9 ():27109-27121.

Chicago/Turabian Style

Marco Pastura; Stefano Nuzzo; Fabio Immovilli; Andrea Toscani; Alberto Rumi; Andrea Cavallini; Giovanni Franceschini; Davide Barater. 2021. "Partial Discharges in Electrical Machines for the More Electric Aircraft—Part I: A Comprehensive Modeling Tool for the Characterization of Electric Drives Based on Fast Switching Semiconductors." IEEE Access 9, no. : 27109-27121.

Journal article
Published: 01 August 2019 in IEEE Transactions on Industry Applications
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The design of an innovative converter for ohmic heating of fluid foods is presented. Application-specific requirements are addressed with new solutions and verified on a commercial-size 60 kW prototype. A multi-output high-voltage (0.8 to 4 kV) transformer with automatic tap change enriches a basic H-bridge topology, enabling processing of a wide set of foods and allowing grounding one of the outputs. High power density is achieved by power switches Pareto optimization in the reliability-efficiency objectives and by pushing the switching frequency up to 30 kHz, solving the electrode corrosion problem, too. Reproducible and reliable operation is assured by three different control strategies: load variability is dealt with a high-dynamics power control, repeatable output is guaranteed by input voltage compensation, optimal working point is ensured by control of the transformer primary current DC component. This last control allows also removing the output capacitors, improving density metrics with respect to the state-of-the-art. Analytical models for all control strategies are given to support dynamic performance tuning while guaranteeing stability.

ACS Style

Alessandro Soldati; Andrea Toscani; Paolo Cova; Giovanni Franceschini. Design and Control of High-Density High-Voltage Smart Converter for Food Ohmic Heating. IEEE Transactions on Industry Applications 2019, 55, 7712 -7725.

AMA Style

Alessandro Soldati, Andrea Toscani, Paolo Cova, Giovanni Franceschini. Design and Control of High-Density High-Voltage Smart Converter for Food Ohmic Heating. IEEE Transactions on Industry Applications. 2019; 55 (6):7712-7725.

Chicago/Turabian Style

Alessandro Soldati; Andrea Toscani; Paolo Cova; Giovanni Franceschini. 2019. "Design and Control of High-Density High-Voltage Smart Converter for Food Ohmic Heating." IEEE Transactions on Industry Applications 55, no. 6: 7712-7725.

Journal article
Published: 20 May 2019 in Energies
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This paper analyzes the performance of a three-phase converter architecture with a reduced common mode voltage to be used in electric motor drives. Starting from the classical three-phase bridge architecture, two additional switches are inserted in the DC link, in order to decouple the source from the load during the freewheeling intervals. Ad-hoc modulation strategies are introduced and evaluated against the classical three-phase space vector modulation. Three main parameters are analyzed: common mode voltage, efficiency and reliability. Experimental measurements on a converter prototype are used to evaluate the common mode performance. The efficiency in the case of Si-IGBT and SiC-MOSFETs is experimentally evaluated. Reliability analysis performed with a Coffin-Mason model showed that the higher efficiency offered by the SiC devices allows for a marked extension of the lifetime.

ACS Style

Luca Concari; Davide Barater; Andrea Toscani; Carlo Concari; Giovanni Franceschini; Giampaolo Buticchi; Marco Liserre; He Zhang. Assessment of Efficiency and Reliability of Wide Band-Gap Based H8 Inverter in Electric Vehicle Applications. Energies 2019, 12, 1922 .

AMA Style

Luca Concari, Davide Barater, Andrea Toscani, Carlo Concari, Giovanni Franceschini, Giampaolo Buticchi, Marco Liserre, He Zhang. Assessment of Efficiency and Reliability of Wide Band-Gap Based H8 Inverter in Electric Vehicle Applications. Energies. 2019; 12 (10):1922.

Chicago/Turabian Style

Luca Concari; Davide Barater; Andrea Toscani; Carlo Concari; Giovanni Franceschini; Giampaolo Buticchi; Marco Liserre; He Zhang. 2019. "Assessment of Efficiency and Reliability of Wide Band-Gap Based H8 Inverter in Electric Vehicle Applications." Energies 12, no. 10: 1922.

Conference paper
Published: 01 June 2018 in 2018 International Symposium on Power Electronics, Electrical Drives, Automation and Motion (SPEEDAM)
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This paper extends the authors' deep investigation of the electric rotor fault signatures of induction machines to machines of different size operating in various conditions. Authors researches have already shown the limits of the usual diagnostic procedures based on the sum of both left and right current sidebands. A proper faulty machine model leading to a more robust diagnosis has been proposed and the effect of machine size and load conditions on current space vector sidebands, flux, torque and speed spectral components is shown. These physical quantities, in case of small faults, can be described by their representative phasors in a synchronous reference frame. The analytical links among the phasors are validated by simulations and experiments. The prominent role of mechanical inertia in the diagnostic process is highlighted, assessing the range of validity of the usual diagnostic index versus machine size and load, eventually an alternative procedure is here proposed.

ACS Style

Carlo Concari; Giorgio Pietrini; Alessandro Soldati; Carla Tassoni; Andrea Toscani; Giovanni Franceschini. Induction Machines with Rotor Faults: Analysis of the Physical Quantities for Different Operating Conditions and Machine Sizes for Improved Diagnostics. 2018 International Symposium on Power Electronics, Electrical Drives, Automation and Motion (SPEEDAM) 2018, 208 -215.

AMA Style

Carlo Concari, Giorgio Pietrini, Alessandro Soldati, Carla Tassoni, Andrea Toscani, Giovanni Franceschini. Induction Machines with Rotor Faults: Analysis of the Physical Quantities for Different Operating Conditions and Machine Sizes for Improved Diagnostics. 2018 International Symposium on Power Electronics, Electrical Drives, Automation and Motion (SPEEDAM). 2018; ():208-215.

Chicago/Turabian Style

Carlo Concari; Giorgio Pietrini; Alessandro Soldati; Carla Tassoni; Andrea Toscani; Giovanni Franceschini. 2018. "Induction Machines with Rotor Faults: Analysis of the Physical Quantities for Different Operating Conditions and Machine Sizes for Improved Diagnostics." 2018 International Symposium on Power Electronics, Electrical Drives, Automation and Motion (SPEEDAM) , no. : 208-215.

Journal article
Published: 21 November 2017 in IEEE Transactions on Industrial Informatics
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A high performance parallelable 2 MVA, 50/60 Hz AC/AC frequency converter for harbor applications was designed and built. A specific comprehensive digital control system was set up, in order to obtain optimal current sharing among two or more parallel power converters. The control, based on a master-slave strategy, also guarantees good system availability in case of faults, even when the master is affected, by switching off the faulty converter and assuring continuous system operation under power derating. The control system was designed using MATLAB/ Simulink/PLECS tools, and tested with reduced-scale prototypes. After fine tuning a good agreement between prototype measurements and simulations was obtained. The full-size system, composed of two 2 MVA converters, was then fabricated and tested, demonstrating performances compliant with the requirements and aligned with simulations and measurements performed on the prototypes.

ACS Style

Paolo Cova; Andrea Toscani; Carlo Concari; Giovanni Franceschini; Marco Portesine. Comprehensive Control System for Parallelable 60 Hz-2MVA Harbor AC/AC Converters. IEEE Transactions on Industrial Informatics 2017, 14, 2432 -2441.

AMA Style

Paolo Cova, Andrea Toscani, Carlo Concari, Giovanni Franceschini, Marco Portesine. Comprehensive Control System for Parallelable 60 Hz-2MVA Harbor AC/AC Converters. IEEE Transactions on Industrial Informatics. 2017; 14 (6):2432-2441.

Chicago/Turabian Style

Paolo Cova; Andrea Toscani; Carlo Concari; Giovanni Franceschini; Marco Portesine. 2017. "Comprehensive Control System for Parallelable 60 Hz-2MVA Harbor AC/AC Converters." IEEE Transactions on Industrial Informatics 14, no. 6: 2432-2441.

Conference paper
Published: 01 October 2017 in IECON 2017 - 43rd Annual Conference of the IEEE Industrial Electronics Society
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Incremental encoders and their use in electric drives are nowadays considered standard and not given much thought. Nevertheless, speed measurement through the signals coming from an incremental encoder can be subject to errors in some operating conditions if special care is not taken. Techniques exist in literature to enhance the precision of speed measurement, but they often require special hardware (i.e. FPGA) or a non-negligible portion of computing power. This paper proposes a novel technique for precise speed measurement, with minimal error, that can be implemented on a low-cost microcontroller with standard quadrature decoder peripheral.

ACS Style

Francesco Brugnano; Carlo Concari; Emir Imamovic; Filippo Savi; Andrea Toscani; Roberto Zanichelli. A simple and accurate algorithm for speed measurement in electric drives using incremental encoder. IECON 2017 - 43rd Annual Conference of the IEEE Industrial Electronics Society 2017, 8551 -8556.

AMA Style

Francesco Brugnano, Carlo Concari, Emir Imamovic, Filippo Savi, Andrea Toscani, Roberto Zanichelli. A simple and accurate algorithm for speed measurement in electric drives using incremental encoder. IECON 2017 - 43rd Annual Conference of the IEEE Industrial Electronics Society. 2017; ():8551-8556.

Chicago/Turabian Style

Francesco Brugnano; Carlo Concari; Emir Imamovic; Filippo Savi; Andrea Toscani; Roberto Zanichelli. 2017. "A simple and accurate algorithm for speed measurement in electric drives using incremental encoder." IECON 2017 - 43rd Annual Conference of the IEEE Industrial Electronics Society , no. : 8551-8556.

Conference paper
Published: 01 October 2016 in IECON 2016 - 42nd Annual Conference of the IEEE Industrial Electronics Society
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This paper proposes the comparison among different sensorless position estimation strategies suitable for permanent magnet assisted synchronous reluctance machine drives. A machine of such type was designed and optimized aiming at improving its sensorless performance, besides minimizing the torque ripple and maximizing the power factor. Different sensorless solutions for the estimation of the magnetic flux linkage and for tracking the rotor angle are investigated and their performance compared in computer simulations. Experimental results are reported for the PM-assisted synchronous reluctance motor drive example.

ACS Style

Luca Concari; Andrea Toscani; Davide Barater; Carlo Concari; Michele Degano; Gianmario Pellegrino. Comparison of flux observers for sensorless control of permanent magnet assisted SynRel motors. IECON 2016 - 42nd Annual Conference of the IEEE Industrial Electronics Society 2016, 2719 -2724.

AMA Style

Luca Concari, Andrea Toscani, Davide Barater, Carlo Concari, Michele Degano, Gianmario Pellegrino. Comparison of flux observers for sensorless control of permanent magnet assisted SynRel motors. IECON 2016 - 42nd Annual Conference of the IEEE Industrial Electronics Society. 2016; ():2719-2724.

Chicago/Turabian Style

Luca Concari; Andrea Toscani; Davide Barater; Carlo Concari; Michele Degano; Gianmario Pellegrino. 2016. "Comparison of flux observers for sensorless control of permanent magnet assisted SynRel motors." IECON 2016 - 42nd Annual Conference of the IEEE Industrial Electronics Society , no. : 2719-2724.

Conference paper
Published: 01 February 2014 in Advanced Materials and Information Technology Processing
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Welcome to the WIT Press eLibrary - the home of the Transactions of the Wessex Institute collection, providing on-line access to papers presented at the Institute's prestigious international conferences and from its State-of-the-Art in Science & Engineering publications.

ACS Style

F. Troni; Carlo Concari; A. Toscani; Giampaolo Buticchi; Giovanni Franceschini. Fault tolerant PWM generation with double-redundant logic. Advanced Materials and Information Technology Processing 2014, 1 .

AMA Style

F. Troni, Carlo Concari, A. Toscani, Giampaolo Buticchi, Giovanni Franceschini. Fault tolerant PWM generation with double-redundant logic. Advanced Materials and Information Technology Processing. 2014; ():1.

Chicago/Turabian Style

F. Troni; Carlo Concari; A. Toscani; Giampaolo Buticchi; Giovanni Franceschini. 2014. "Fault tolerant PWM generation with double-redundant logic." Advanced Materials and Information Technology Processing , no. : 1.

Conference paper
Published: 01 September 2013 in 2013 IEEE Energy Conversion Congress and Exposition
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A 2 MVA 50→60 Hz high performance parallelable frequency converter for harbor application was designed, fabricated, and tested. To increase output power, a smart digital control scheme was implemented; it can parallel two or more power converters with optimum current sharing among them and a good robustness to malfunctioning. Moreover the control can identify a faulty converter and, switching it off, it assures system continuous operations in derating conditions. This attractive feature is worth from availability point of view since it allows restoring full operating conditions without plant shutdown. The control strategy was developed and simulated in MATLAB Simulink/PLECS environment and then tested on a scaled prototype. Once a satisfactory agreement between simulation and prototype was obtained a full size system composed by two 2 MVA converters was built. Measurements performed on full size system confirmed the achievement of the specifications.

ACS Style

Carlo Concari; Paolo Cova; Giovanni Franceschini; Andrea Toscani; Fulvio Bertoluzza. Improved control strategy for modular 2MVA AC/AC power converter. 2013 IEEE Energy Conversion Congress and Exposition 2013, 5294 -5300.

AMA Style

Carlo Concari, Paolo Cova, Giovanni Franceschini, Andrea Toscani, Fulvio Bertoluzza. Improved control strategy for modular 2MVA AC/AC power converter. 2013 IEEE Energy Conversion Congress and Exposition. 2013; ():5294-5300.

Chicago/Turabian Style

Carlo Concari; Paolo Cova; Giovanni Franceschini; Andrea Toscani; Fulvio Bertoluzza. 2013. "Improved control strategy for modular 2MVA AC/AC power converter." 2013 IEEE Energy Conversion Congress and Exposition , no. : 5294-5300.

Journal article
Published: 28 February 2013 in Electric Power Systems Research
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Incremental encoder based BLDC drives are widely employed in industry whenever smooth and efficient operation is needed in the whole speed range. Their weak spot lies in the need for a phase of initial alignment, traditionally performed by forcing the motor through a series of fixed phase supply configurations in an open loop stepping mode. This strategy of alignment causes ample mechanical vibrations which can be intolerable for certain applications. This paper presents a novel algorithm for determining the initial rotor sector and aligning the encoder with the motor while minimizing vibrations and oscillations.

ACS Style

Carlo Concari; Giovanni Franceschini; Andrea Toscani. Vibrationless alignment algorithm for incremental encoder based BLDC drives. Electric Power Systems Research 2013, 95, 225 -231.

AMA Style

Carlo Concari, Giovanni Franceschini, Andrea Toscani. Vibrationless alignment algorithm for incremental encoder based BLDC drives. Electric Power Systems Research. 2013; 95 ():225-231.

Chicago/Turabian Style

Carlo Concari; Giovanni Franceschini; Andrea Toscani. 2013. "Vibrationless alignment algorithm for incremental encoder based BLDC drives." Electric Power Systems Research 95, no. : 225-231.

Journal article
Published: 19 November 2012 in IEEE Transactions on Industrial Electronics
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Many proposals about induction-machine broken-bar detection can be found in the literature. Disturbances that affect phase currents, current space vector, power, fluxes, torque, and speed have been utilized to diagnose mains-supplied machines. Nevertheless, there is still disagreement about how the fault signatures of the different variables correlate with the actual fault and how they depend on the operating conditions. This paper presents a simple but effective analytical representation of induction machines with rotor faults, based on a synchronous reference frame and on Steinmetz's phasors. The developed relationships can be visualized through equivalent circuits, feedback loop block diagrams, or geometrical loci, allowing a deep understanding of the underlying physical phenomena, particularly as functions of inertia and of the machine parameters. The insight thus gained helps to enhance the quantification of fault severity with respect to the usual diagnostic technique based on the sum of the sidebands, clearly defining for the first time the field of validity of such technique. The analytical results are verified through simulations and experiments.

ACS Style

Carlo Concari; Giovanni Franceschini; Carla Tassoni; Andrea Toscani. Validation of a Faulted Rotor Induction Machine Model With an Insightful Geometrical Interpretation of Physical Quantities. IEEE Transactions on Industrial Electronics 2012, 60, 4074 -4083.

AMA Style

Carlo Concari, Giovanni Franceschini, Carla Tassoni, Andrea Toscani. Validation of a Faulted Rotor Induction Machine Model With an Insightful Geometrical Interpretation of Physical Quantities. IEEE Transactions on Industrial Electronics. 2012; 60 (9):4074-4083.

Chicago/Turabian Style

Carlo Concari; Giovanni Franceschini; Carla Tassoni; Andrea Toscani. 2012. "Validation of a Faulted Rotor Induction Machine Model With an Insightful Geometrical Interpretation of Physical Quantities." IEEE Transactions on Industrial Electronics 60, no. 9: 4074-4083.

Conference paper
Published: 01 October 2012 in IECON 2012 - 38th Annual Conference on IEEE Industrial Electronics Society
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This paper deals with the design of a fault tolerant digital control of high power, parallelable frequency converters for harbor application. With the aim to yield a high degree of system availability the control algorithm must be able to automatically switch from parallel to single mode operation in case of fault. Scalability is a further key feature of the proposed control strategy: in order to increase the output power rating, the control strategy can parallel more than two converters increasing, in turn, the availability of the whole system as well. An inclusive set of MATLAB simulations shows that the proposed control algorithm makes the whole power system complying with the specifications in terms of THD, power efficiency and dynamic response. A full set of measurements, performed on a scaled converter prototype, confirmed the simulation results.

ACS Style

Andrea Toscani; Paolo Cova; Fulvio Bertoluzza; Nicola Pini; Giovanni Franceschini. Fault tolerant digital control of 2 MVA parallelable frequency converters for harbor applications. IECON 2012 - 38th Annual Conference on IEEE Industrial Electronics Society 2012, 416 -421.

AMA Style

Andrea Toscani, Paolo Cova, Fulvio Bertoluzza, Nicola Pini, Giovanni Franceschini. Fault tolerant digital control of 2 MVA parallelable frequency converters for harbor applications. IECON 2012 - 38th Annual Conference on IEEE Industrial Electronics Society. 2012; ():416-421.

Chicago/Turabian Style

Andrea Toscani; Paolo Cova; Fulvio Bertoluzza; Nicola Pini; Giovanni Franceschini. 2012. "Fault tolerant digital control of 2 MVA parallelable frequency converters for harbor applications." IECON 2012 - 38th Annual Conference on IEEE Industrial Electronics Society , no. : 416-421.

Conference paper
Published: 01 September 2012 in 2012 IEEE International Energy Conference and Exhibition (ENERGYCON)
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In this paper a full digital control for high performances modular power converters is developed. As a matter of fact, to increase output power, control strategy can parallel two or more power converters assuring, at the same time, optimum current sharing among them. If one of the paralleled converters fails, the control architecture can detect anomalous system behaviour, identify the converter in trouble and, switching it off, assuring continuous operation in power derating conditions. Moreover since master and slave converters are identical both in software and hardware configuration, if the master converter fails the supervision system can decide to give its function to another converter of the paralleled structure. This is a nice feature since it allows a high degree of availability and the possibility to restore the normal system behaviour avoiding plant shutdown. A full set of measurements, performed on a system prototype, shows the good dynamic performances of the voltage control loop of the master converter and of the current control loop of the slave converter, both in case of dq control and proportional + resonant control.

ACS Style

Paolo Cova; Giovanni Franceschini; Andrea Toscani. Development of synchronized control for multiple 2 MVA AC/AC converters. 2012 IEEE International Energy Conference and Exhibition (ENERGYCON) 2012, 152 -157.

AMA Style

Paolo Cova, Giovanni Franceschini, Andrea Toscani. Development of synchronized control for multiple 2 MVA AC/AC converters. 2012 IEEE International Energy Conference and Exhibition (ENERGYCON). 2012; ():152-157.

Chicago/Turabian Style

Paolo Cova; Giovanni Franceschini; Andrea Toscani. 2012. "Development of synchronized control for multiple 2 MVA AC/AC converters." 2012 IEEE International Energy Conference and Exhibition (ENERGYCON) , no. : 152-157.

Conference paper
Published: 01 September 2011 in 2011 IEEE Energy Conversion Congress and Exposition
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This paper presents a deep investigation on the rotor fault signatures of induction machines. Phase current and current space vector sidebands, spectral components of flux, torque and speed are analyzed as functions of inertia, load and machine size. Analytical expressions among the physical quantities, validated by simulation and experimental results, are developed using a synchronous reference frame. These expressions, together with geometrical loci showing the vector relationships among the quantities involved, allow a thorough understanding of the underlying physical phenomena. A test-bed able to realize a variable virtual inertia allows the experimental validation as well.

ACS Style

Carlo Concari; Giovanni Franceschini; Carla Tassoni; Andrea Toscani. A geometrical interpretation of current space vector components due to induction machines rotor faults. 2011 IEEE Energy Conversion Congress and Exposition 2011, 1568 -1575.

AMA Style

Carlo Concari, Giovanni Franceschini, Carla Tassoni, Andrea Toscani. A geometrical interpretation of current space vector components due to induction machines rotor faults. 2011 IEEE Energy Conversion Congress and Exposition. 2011; ():1568-1575.

Chicago/Turabian Style

Carlo Concari; Giovanni Franceschini; Carla Tassoni; Andrea Toscani. 2011. "A geometrical interpretation of current space vector components due to induction machines rotor faults." 2011 IEEE Energy Conversion Congress and Exposition , no. : 1568-1575.

Conference paper
Published: 01 September 2010 in The XIX International Conference on Electrical Machines - ICEM 2010
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Intensive researches have been spent with the aim of separating load torque unbalance and rotor faults effects in induction machines by devoted diagnostic procedures. Recently, current space vector active and reactive components due to these troubles are considered for their different relevance in correspondence of the two events: the torque unbalance seems to affect more the active component than the reactive one, vice versa the rotor faults. In this paper it is shown that the space vector components amplitude and their phase displacement must be considered, being the latter the main parameter: if the active component leads or lags the reactive one by less than π/2 a rotor fault is present, otherwise a torque unbalance is present. Regarding the components amplitude, it depends, overall, besides on trouble severity, on the operating conditions and on the combined rotor-load inertia.

ACS Style

Carlo Concari; C. Tassoni; A. Toscani. A new method to discern mechanical unbalances from rotor faults in induction machines. The XIX International Conference on Electrical Machines - ICEM 2010 2010, 1 -8.

AMA Style

Carlo Concari, C. Tassoni, A. Toscani. A new method to discern mechanical unbalances from rotor faults in induction machines. The XIX International Conference on Electrical Machines - ICEM 2010. 2010; ():1-8.

Chicago/Turabian Style

Carlo Concari; C. Tassoni; A. Toscani. 2010. "A new method to discern mechanical unbalances from rotor faults in induction machines." The XIX International Conference on Electrical Machines - ICEM 2010 , no. : 1-8.

Proceedings article
Published: 01 September 2009 in 2009 IEEE Energy Conversion Congress and Exposition
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Incremental encoder based BLDC drives are widely employed in industry whenever smooth and efficient operation is needed in the whole speed range. Their weak spot lies in the need for a phase of initial alignment. Such task is traditionally performed by forcing the motor through a series of fixed phase supply configurations, causing strong vibrations which can be intolerable for certain applications. In this paper a novel algorithm that allows determining the initial rotor position (sector) and aligning the encoder while minimizing vibrations and oscillations is presented.

ACS Style

Carlo Concari; Giovanni Franceschini; Andrea Toscani. Vibrationless alignment algorithm for incremental encoder based BLDC drives. 2009 IEEE Energy Conversion Congress and Exposition 2009, 3456 -3460.

AMA Style

Carlo Concari, Giovanni Franceschini, Andrea Toscani. Vibrationless alignment algorithm for incremental encoder based BLDC drives. 2009 IEEE Energy Conversion Congress and Exposition. 2009; ():3456-3460.

Chicago/Turabian Style

Carlo Concari; Giovanni Franceschini; Andrea Toscani. 2009. "Vibrationless alignment algorithm for incremental encoder based BLDC drives." 2009 IEEE Energy Conversion Congress and Exposition , no. : 3456-3460.

Proceedings article
Published: 01 October 2008 in 2008 IEEE Industry Applications Society Annual Meeting
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Most vehicles roaming our streets today are propelled by an internal combustion engine (ICE). Despite the remarkable evolution they had during the last century, ICEs are the main cause of pollution in urban areas. While pure electric vehicles (EVs) are still far from the performance of ICE powered ones, hybrid electric vehicles (HEVs) hold the promise of drastic increase in efficiency and cut in harmful emissions. This paper reports the design and development of a small HEV for personal urban mobility, highlighting architectural choices and optimum power management strategies with a particular focus on the electric powertrain system.

ACS Style

Carlo Concari; Giovanni Franceschini; Andrea Toscani. Design and Optimization of a Hybrid-Electric Vehicle for Advanced Urban Mobility. 2008 IEEE Industry Applications Society Annual Meeting 2008, 1 -7.

AMA Style

Carlo Concari, Giovanni Franceschini, Andrea Toscani. Design and Optimization of a Hybrid-Electric Vehicle for Advanced Urban Mobility. 2008 IEEE Industry Applications Society Annual Meeting. 2008; ():1-7.

Chicago/Turabian Style

Carlo Concari; Giovanni Franceschini; Andrea Toscani. 2008. "Design and Optimization of a Hybrid-Electric Vehicle for Advanced Urban Mobility." 2008 IEEE Industry Applications Society Annual Meeting , no. : 1-7.

Conference paper
Published: 01 September 2008 in 2008 18th International Conference on Electrical Machines
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This paper presents the design and realization of a brushless DC motor-based gear pump for the treatment of organic fluids in sterile environments. Details of the FEM simulations used throughout the mechanical and electromagnetic design of the electrical machine and of the sensorless control algorithm, implemented on a motion control-oriented fixed point DSP, are reported. Construction and experimental testing of a prototype are reported as well. The realized pump features a very compact design and a fairly efficient operation.

ACS Style

Claudio Bianchini; Carlo Concari; A. Toscani. Low-cost sensorless BLDC for organic fluids treatment in sterile environments. 2008 18th International Conference on Electrical Machines 2008, 1 -5.

AMA Style

Claudio Bianchini, Carlo Concari, A. Toscani. Low-cost sensorless BLDC for organic fluids treatment in sterile environments. 2008 18th International Conference on Electrical Machines. 2008; ():1-5.

Chicago/Turabian Style

Claudio Bianchini; Carlo Concari; A. Toscani. 2008. "Low-cost sensorless BLDC for organic fluids treatment in sterile environments." 2008 18th International Conference on Electrical Machines , no. : 1-5.

Conference paper
Published: 01 September 2008 in 2008 18th International Conference on Electrical Machines
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Hybrid-electric vehicles (HEVs) are currently a hot research topic in the field of clean and sustainable mobility. HEVs can make a difference especially in urban areas where, due to the typical driving patterns with frequent stops and standing starts, traditional internal combustion engines (ICEs) operate at very low levels of efficiency. The authors believe that personal urban mobility is the automotive segment that, more than others, can reap on the benefits of hybrid traction. This paper presents the design and optimization of a small HEV for personal urban mobility, with a particular focus on the optimization of the electric powertrain.

ACS Style

Carlo Concari; Giovanni Franceschini; A. Toscani. Hybrid-Electric Vehicles for advanced urban mobility: a New Proposal. 2008 18th International Conference on Electrical Machines 2008, 1 -5.

AMA Style

Carlo Concari, Giovanni Franceschini, A. Toscani. Hybrid-Electric Vehicles for advanced urban mobility: a New Proposal. 2008 18th International Conference on Electrical Machines. 2008; ():1-5.

Chicago/Turabian Style

Carlo Concari; Giovanni Franceschini; A. Toscani. 2008. "Hybrid-Electric Vehicles for advanced urban mobility: a New Proposal." 2008 18th International Conference on Electrical Machines , no. : 1-5.