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The design of rolling stock plays a key role in the attractiveness of the rail transport. Train design must strictly meet the requirements of rail operators to ensure high quality and cost-effective services. Semiconductor power devices made from silicon carbide (SiC) have reached a level of technology enabling their widespread use in traction power converters. SiC transistors offering energy savings, quieter operation, improved reliability and reduced maintenance costs have become the choice for the next-generation railway power converters and are quickly replacing the IGBT technology which has been used for decades. The paper describes the design and development of a novel SiC-based DC power electronic traction transformer (PETT) intended for electric multiple units (EMUs) operated in 3 kV DC rail traction. The details related to the 0.5 MVA peak power medium voltage prototype, including the electrical design of the main building blocks are presented in the first part of the paper. The second part deals with the implementation of the developed SiC-based DC PETT into a regional train operating on a 3 kV DC traction system. The experimental results obtained during the testing are presented to demonstrate the performance of the developed 3 kV DC PETT prototype.
Marek Adamowicz; Janusz Szewczyk. SiC-Based Power Electronic Traction Transformer (PETT) for 3 kV DC Rail Traction. Energies 2020, 13, 5573 .
AMA StyleMarek Adamowicz, Janusz Szewczyk. SiC-Based Power Electronic Traction Transformer (PETT) for 3 kV DC Rail Traction. Energies. 2020; 13 (21):5573.
Chicago/Turabian StyleMarek Adamowicz; Janusz Szewczyk. 2020. "SiC-Based Power Electronic Traction Transformer (PETT) for 3 kV DC Rail Traction." Energies 13, no. 21: 5573.
A novel non-isolated resonant quasi-impedance (quasi-Z)-source network DC–DC converter is proposed. The resonant impedance source network is derived from the quasi-Z-source network by including the autotransformer-based resonant cell instead of the second inductor of the quasi-Z-network. The leakage inductance of the autotransformer and two resonant capacitors connected in series with the autotransformer windings constitute a high-frequency resonant tank. At the same time, the resonant capacitors block the DC-bias current of the autotransformer. The resonant operation with a sinusoidal current of the main switch and diodes enables electromagnetic interference mitigation and improves the efficiency of the converter. Experimental results of a 100 W, 30 V/200 V prototype are presented to verify the analysis results of the proposed converter.
M. Adamowicz. Non‐isolated resonant quasi‐Z‐source network DC–DC converter. Electronics Letters 2019, 55, 855 -857.
AMA StyleM. Adamowicz. Non‐isolated resonant quasi‐Z‐source network DC–DC converter. Electronics Letters. 2019; 55 (15):855-857.
Chicago/Turabian StyleM. Adamowicz. 2019. "Non‐isolated resonant quasi‐Z‐source network DC–DC converter." Electronics Letters 55, no. 15: 855-857.
Semiconductor power devices made from silicon carbide (SiC) reached a level of technology enabling their widespread use in power converters. Two different approaches to implementation of modern traction converters in electric multiple units (EMU) have been presented in recent years: (i) 3.3-kV SiC MOSFET-based three-level PWM inverter with regenerative braking and (ii) 6.5-kV IGBT-based fourquadrant power electronic traction transformer (PETT). The former has successfully reached optimized dimensions and efficiency but still requires a bulky line frequency transformer for multisystem applications. The latter characterizes inherent galvanic isolation from AC traction, which is realized by cascaded system of power electronic cells containing medium frequency transformers (MFT). The downsizing of the 6.5-kV IGBT-based cells is, however, problematic. The present paper proposes a different approach, that involves the use of a fast switching 1.2-kV SiC MOSFETS. The SiC-based PETT proposed in the paper is dedicated first for the DC traction. For multi-system application the input voltage of the proposed PETT can be adjusted using weight-optimized adjusting autotransformer. Thanks to utilization of fast-switching SiCbased power modules the weight and size of the power electronic cells can be optimized in a convenient way.
Marek Adamowicz; Zbigniew Krzemiński; Paweł Stec. Dual Active Bridge (DAB) DC-DC converter for multilevel propulsion converters for electrical multiple units (EMU). MATEC Web of Conferences 2018, 180, 1 .
AMA StyleMarek Adamowicz, Zbigniew Krzemiński, Paweł Stec. Dual Active Bridge (DAB) DC-DC converter for multilevel propulsion converters for electrical multiple units (EMU). MATEC Web of Conferences. 2018; 180 ():1.
Chicago/Turabian StyleMarek Adamowicz; Zbigniew Krzemiński; Paweł Stec. 2018. "Dual Active Bridge (DAB) DC-DC converter for multilevel propulsion converters for electrical multiple units (EMU)." MATEC Web of Conferences 180, no. : 1.
Marek Adamowicz. Sterowanie multiskalarne pięciofazową maszyną indukcyjną. PRZEGLĄD ELEKTROTECHNICZNY 2016, 1, 108 -115.
AMA StyleMarek Adamowicz. Sterowanie multiskalarne pięciofazową maszyną indukcyjną. PRZEGLĄD ELEKTROTECHNICZNY. 2016; 1 (5):108-115.
Chicago/Turabian StyleMarek Adamowicz. 2016. "Sterowanie multiskalarne pięciofazową maszyną indukcyjną." PRZEGLĄD ELEKTROTECHNICZNY 1, no. 5: 108-115.
Power Electronics Building Blocks for implementing Smart MV/LV Distribution Transformers for Smart Grid; Acta Energetica. 1. Introduction
Marek Adamowicz. Power Electronics Building Blocks for implementing Smart MV/LV Distribution Transformers for Smart Grid. Acta Energetica 2014, 61 -13.
AMA StyleMarek Adamowicz. Power Electronics Building Blocks for implementing Smart MV/LV Distribution Transformers for Smart Grid. Acta Energetica. 2014; (21):61-13.
Chicago/Turabian StyleMarek Adamowicz. 2014. "Power Electronics Building Blocks for implementing Smart MV/LV Distribution Transformers for Smart Grid." Acta Energetica , no. 21: 61-13.
Marek Adamowicz; Zbigniew Krzeminski. Medium voltage (MV) modular multilevel converters. AUTOMATYKA, ELEKTRYKA, ZAKLOCENIA 2014, 5, 56 -71.
AMA StyleMarek Adamowicz, Zbigniew Krzeminski. Medium voltage (MV) modular multilevel converters. AUTOMATYKA, ELEKTRYKA, ZAKLOCENIA. 2014; 5 (3(17)2014):56-71.
Chicago/Turabian StyleMarek Adamowicz; Zbigniew Krzeminski. 2014. "Medium voltage (MV) modular multilevel converters." AUTOMATYKA, ELEKTRYKA, ZAKLOCENIA 5, no. 3(17)2014: 56-71.
A phase-shift isolated DC-DC converters are expected to be the key elements of modern medium voltage (MV) modular power converters. By comparing to the conventional MV modular power converters including bulky line-frequency transformers, the isolated DC-DC converters enable significant volume reduction and flexible bidirectional power flow control. The isolated phase-shift DC-DC converter with integrated gate drivers and interface module can be recognized as the power electronics building block (PEBB). The present paper further extends the concept of PEBBs dedicated for MV modular power converters. A hybrid high-frequency SiC- and line-frequency Si-based isolated AC-DC-DC PEBB is proposed in the paper. It provides galvanic isolation, voltage transformation capability and requires fewer transistors and diodes than multistage multilevel H-bridge AC-DC-DC converter with the same number of voltage levels. Experimental results of the SiC-based phase shift DC-DC converter and simulation results of the proposed AC-DC-DC PEBB are presented to confirm the validity of the system.
Marek Adamowicz; Ryszard Strzelecki; Zbigniew Krzeminski. Hybrid high-frequency-SiC and line-frequency-Si based PEBB for MV modular power converters. IECON 2012 - 38th Annual Conference on IEEE Industrial Electronics Society 2012, 5197 -5202.
AMA StyleMarek Adamowicz, Ryszard Strzelecki, Zbigniew Krzeminski. Hybrid high-frequency-SiC and line-frequency-Si based PEBB for MV modular power converters. IECON 2012 - 38th Annual Conference on IEEE Industrial Electronics Society. 2012; ():5197-5202.
Chicago/Turabian StyleMarek Adamowicz; Ryszard Strzelecki; Zbigniew Krzeminski. 2012. "Hybrid high-frequency-SiC and line-frequency-Si based PEBB for MV modular power converters." IECON 2012 - 38th Annual Conference on IEEE Industrial Electronics Society , no. : 5197-5202.
This paper is devoted to the step-up dc/dc converter family with a cascaded quasi-Z-source network (qZS-network). The cascaded (two-stage) qZS-network could be derived by the adding of one diode, one inductor, and two capacitors to the traditional quasi-Z-source inverter (qZSI). The proposed cascaded qZSI inherits all the advantages of the traditional solution (voltage boost and buck functions in a single stage, continuous input current, and improved reliability). Moreover, as compared to the conventional qZSI, the proposed solution reduces the shoot-through duty cycle by over 30% at the same voltage boost factor. Theoretical analysis of the two-stage qZSI in the shoot-through and non-shoot-through operating modes is described. The proposed and traditional qZS-networks are compared. A prototype of a step-up dc/dc converter with the cascaded qZS-network was built to verify the theoretical assumptions. The experimental results are presented and analyzed. Finally, a further optimization method of the cascaded qZS-network is proposed, and some practical design issues are discussed.
Dmitri Vinnikov; Indrek Roasto; Ryszard Strzelecki; Marek Adamowicz. Step-Up DC/DC Converters With Cascaded Quasi-Z-Source Network. IEEE Transactions on Industrial Electronics 2011, 59, 3727 -3736.
AMA StyleDmitri Vinnikov, Indrek Roasto, Ryszard Strzelecki, Marek Adamowicz. Step-Up DC/DC Converters With Cascaded Quasi-Z-Source Network. IEEE Transactions on Industrial Electronics. 2011; 59 (10):3727-3736.
Chicago/Turabian StyleDmitri Vinnikov; Indrek Roasto; Ryszard Strzelecki; Marek Adamowicz. 2011. "Step-Up DC/DC Converters With Cascaded Quasi-Z-Source Network." IEEE Transactions on Industrial Electronics 59, no. 10: 3727-3736.
Z-source inverters (ZSIs) are suited for applications which require a large range of voltage gain, such as in fuel cells. The present paper extends the concept of ZSIs. New type high step-up LCCT-Z-source inverter dedicated for fuel cells is proposed in the paper. Compared to recently proposed modifications of basic Z-source inverter the new topology has the advantages of available continuous input current, improved boost ratio and simple topology. Thanks to application of transformer with turns ratio higher than one the proposed LCCT-Z-source can operate with lower shoot-through ratio and higher modulation index compared to ZSI. The existence of two built-in DC-current-blocking capacitors connected in series with transformer windings prevents the transformer core from saturation. Simulation and experimental results are provided to verify the reliability of the proposed topology.
Marek Adamowicz; Jaroslaw Guzinski; Ryszard Strzelecki; Fang Zheng Peng; Haitham Abu-Rub. High step-up continuous input current LCCT-Z-source inverters for fuel cells. 2011 IEEE Energy Conversion Congress and Exposition 2011, 2276 -2282.
AMA StyleMarek Adamowicz, Jaroslaw Guzinski, Ryszard Strzelecki, Fang Zheng Peng, Haitham Abu-Rub. High step-up continuous input current LCCT-Z-source inverters for fuel cells. 2011 IEEE Energy Conversion Congress and Exposition. 2011; ():2276-2282.
Chicago/Turabian StyleMarek Adamowicz; Jaroslaw Guzinski; Ryszard Strzelecki; Fang Zheng Peng; Haitham Abu-Rub. 2011. "High step-up continuous input current LCCT-Z-source inverters for fuel cells." 2011 IEEE Energy Conversion Congress and Exposition , no. : 2276-2282.
The application of current source inverters (CSI) in induction motor (IM) drives offers a number of advantages, including: voltage boosting capability, natural shoot-through short-circuit protection and generation of sinusoidal voltages. The exact generation of sinusoidal voltages is possible thanks to thanks to the effect of the output ac filter capacitors and may improve the accuracy of sensorless IM control. The elimination of high dv/dt in CSI fed IM drives provides also a noticeable electromagnetic interference (EMI) reduction. The paper presents recent achievements of current source inverters (CSI) which are the use of new generation silicon carbide (SiC) devices (normally-off SiC JFETs and SiC Schottky diodes) and the application of modern nonlinear control which may considerably improve the performance of CSI fed IM drives.
Marek Adamowicz; Marcin Morawiec. Advances in CSI-fed induction motor drives. 2011 7th International Conference-Workshop Compatibility and Power Electronics (CPE) 2011, 276 -282.
AMA StyleMarek Adamowicz, Marcin Morawiec. Advances in CSI-fed induction motor drives. 2011 7th International Conference-Workshop Compatibility and Power Electronics (CPE). 2011; ():276-282.
Chicago/Turabian StyleMarek Adamowicz; Marcin Morawiec. 2011. "Advances in CSI-fed induction motor drives." 2011 7th International Conference-Workshop Compatibility and Power Electronics (CPE) , no. : 276-282.
Recent achievements related to the use of silicon carbide (SiC) devices in wind generation systems (WGSs) are presented in the paper. With applications in WGS, the choice of high-temperature, high-frequency SiC devices reduces the volume and size of power electronic converters, particularly their passive filters which dominate the weigh of the converter. The SiC-based power converters are expected to have three times lower losses than silicon-based AC-DC-AC converters currently applied to the wind turbines. Efficiency improvement can be particularly significant at low wind speeds where the WGS operates most of the time. The paper presents results obtained for the 30A 1200V generator side SiC JFET-based DC-AC converter with a switching frequency 100 kHz. The prototype was worked out and investigated at the Gdansk University of Technology. A special attention is paid to the performance of two stage DC-coupled gate driver circuit. Static and dynamic characteristics of 1200V SiC devices (JFETs and Schottky diodes) used in the WGS DC-AC converter are investigated. An approach to suppression of undesirable oscillations/EMI problems caused by the high dv/dt of SiC devices is presented.
Marek Adamowicz; Sebastian Giziewski; Jędrzej Pietryka; Mariusz Rutkowski; Zbigniew Krzeminski. Evaluation of SiC JFETs and SiC Schottky diodes for wind generation systems. 2011 IEEE International Symposium on Industrial Electronics 2011, 269 -276.
AMA StyleMarek Adamowicz, Sebastian Giziewski, Jędrzej Pietryka, Mariusz Rutkowski, Zbigniew Krzeminski. Evaluation of SiC JFETs and SiC Schottky diodes for wind generation systems. 2011 IEEE International Symposium on Industrial Electronics. 2011; ():269-276.
Chicago/Turabian StyleMarek Adamowicz; Sebastian Giziewski; Jędrzej Pietryka; Mariusz Rutkowski; Zbigniew Krzeminski. 2011. "Evaluation of SiC JFETs and SiC Schottky diodes for wind generation systems." 2011 IEEE International Symposium on Industrial Electronics , no. : 269-276.
Many renewable generation units (e.g. PVs, fuel cells, small wind turbines) require integrated DC-AC converters providing efficient high step-up power conversion. The recently proposed Z-source-type integrated buck-boost inverters characterize one stage energy processing and wide range of output voltage regulation. This paper presents the possibility of further extending Z-source-type inverters application area through the topology reconfiguration. The unique property of the proposed Z-source-type inverter with applied high frequency transformer and built-in DC current blocking capacitors is that no energy is stored in the transformer windings. That prevents core saturation and enables high voltage gain. Simulation and experimental results are shown to verify the proposed topology.
Marek Adamowicz; Jaroslaw Guzinski; Dmitri Vinnikov; Natalia Strzelecka. Trans-Z-source-like inverter with built-in DC current blocking capacitors. 2011 7th International Conference-Workshop Compatibility and Power Electronics (CPE) 2011, 137 -143.
AMA StyleMarek Adamowicz, Jaroslaw Guzinski, Dmitri Vinnikov, Natalia Strzelecka. Trans-Z-source-like inverter with built-in DC current blocking capacitors. 2011 7th International Conference-Workshop Compatibility and Power Electronics (CPE). 2011; ():137-143.
Chicago/Turabian StyleMarek Adamowicz; Jaroslaw Guzinski; Dmitri Vinnikov; Natalia Strzelecka. 2011. "Trans-Z-source-like inverter with built-in DC current blocking capacitors." 2011 7th International Conference-Workshop Compatibility and Power Electronics (CPE) , no. : 137-143.
Advanced control systems combined with high speed gate driver circuits enable extremely high rate of change of power devices voltages, up to hundreds of kV/us. Short rise times of power devices could cause significant EMC problems, which are unacceptable in majority of power electronics applications. It is known that voltage variations during diode switch-off depend on how long it takes for the charge stored near the p-n junction to be recovered during voltage reversing. In fast switching applications good forward recovery characteristics are needed. The silicon carbide (SiC) diodes characterize almost zero reverse recovery charge. However the lossless operation in connection with extremely high dv/dt could cause the SiC diodes less effective in damping the voltage ringing. The compromise between high efficiency and low EMI emission is therefore the actual aim of the research. The paper compares the static and dynamic characteristics of ultra fast silicon (Si) and SiC Schottky diodes and presents the study of the mechanism of parasitic high frequency oscillations during turn-off transient.
Marek Adamowicz; Sebastian Giziewski; Jedrzej Pietryka; Zbigniew Krzeminski. Performance comparison of SiC Schottky diodes and silicon ultra fast recovery diodes. 2011 7th International Conference-Workshop Compatibility and Power Electronics (CPE) 2011, 144 -149.
AMA StyleMarek Adamowicz, Sebastian Giziewski, Jedrzej Pietryka, Zbigniew Krzeminski. Performance comparison of SiC Schottky diodes and silicon ultra fast recovery diodes. 2011 7th International Conference-Workshop Compatibility and Power Electronics (CPE). 2011; ():144-149.
Chicago/Turabian StyleMarek Adamowicz; Sebastian Giziewski; Jedrzej Pietryka; Zbigniew Krzeminski. 2011. "Performance comparison of SiC Schottky diodes and silicon ultra fast recovery diodes." 2011 7th International Conference-Workshop Compatibility and Power Electronics (CPE) , no. : 144-149.
This paper presents the steady-state analysis of the voltage-fed quasi-Z-source inverter (qZSI) with cascaded (two-stage) quasi-Z-source network (qZS-network). Cascaded qZS-network is derived by the adding of one diode, one inductor and two capacitors to the traditional qZSI. Main focus of this paper is on mathematical models of the cascaded qZS-converter. Static models were elaborated and analyzed for the continuous (CCM) and discontinuous conduction mode (DCM) of the converter. In order to verify the theoretical assumptions a prototype has been built. The experimental results are presented and analyzed.
Dmitri Vinnikov; Indrek Roasto; Ryszard Strzelecki; Marek Adamowicz. CCM and DCM operation analysis of cascaded quasi-Z-source inverter. 2011 IEEE International Symposium on Industrial Electronics 2011, 159 -164.
AMA StyleDmitri Vinnikov, Indrek Roasto, Ryszard Strzelecki, Marek Adamowicz. CCM and DCM operation analysis of cascaded quasi-Z-source inverter. 2011 IEEE International Symposium on Industrial Electronics. 2011; ():159-164.
Chicago/Turabian StyleDmitri Vinnikov; Indrek Roasto; Ryszard Strzelecki; Marek Adamowicz. 2011. "CCM and DCM operation analysis of cascaded quasi-Z-source inverter." 2011 IEEE International Symposium on Industrial Electronics , no. : 159-164.
Many renewable generation units (e.g. PVs, fuel cells, small wind turbines) require integrated DC-AC converters providing efficient high step-up power conversion. On the basis of recent developments in impedance source (Z-source) inverters the present paper proposes an integration of quasi-Z-source inverter (qZSI) with a built-in high frequency transformer. Two new type LCCT-Z-Source inverters are presented by author. Proposed inverters characterize continuous input current, improved relationship between boost coefficient and modulation index and improved EMI performance. Application of four element (Inductor - Capacitor - Capacitor - Transformer) LCCT impedance network provides higher voltage gain than obtained in quasi-Z-source inverter. The advantage of proposed topology over other recently developed trans Z-source inverters (TZSI) is that two built-in capacitors block DC currents in transformer windings and prevents core saturation. Simulation and experimental results are shown to verify the proposed topologies.
Marek Adamowicz. LCCT-Z-Source inverters. 2011 10th International Conference on Environment and Electrical Engineering 2011, 1 -6.
AMA StyleMarek Adamowicz. LCCT-Z-Source inverters. 2011 10th International Conference on Environment and Electrical Engineering. 2011; ():1-6.
Chicago/Turabian StyleMarek Adamowicz. 2011. "LCCT-Z-Source inverters." 2011 10th International Conference on Environment and Electrical Engineering , no. : 1-6.
The paper proposes diagnostic technique for identifying rotor broken bar in speed sensorless three-phase induction motor drive system. Experimental data is collected for healthy and faulty motor with two rotor broken bar. The collected data is first processed using Wavelet packet 1-D transformation to extract the statistical information. The statistical information thus obtained is used to train the Adaptive Neuro-Fuzzy inference system (ANFIS) which is used as fault classifier. The stator current space vector magnitude is used in conjunction with Wavelet transform as the current signature is the most effective method of fault diagnosis. The speed signal obtained from the observer system is directly used in ANFIS. The proposed synergy of Wavelet packet and ANFIS provide highly accurate and computationally efficient tool that can be used for on-line fault diagnosis.
Haitham Abu-Rub; Atif Iqbal; Sk. Moin Ahmed; Jaroslaw Guzinski; Marek Adamowicz; Mina Rahiminia. Rotor broken bar diagnostics in induction motor drive using Wavelet packet transform and ANFIS classification. 2011 IEEE International Electric Machines & Drives Conference (IEMDC) 2011, 365 -370.
AMA StyleHaitham Abu-Rub, Atif Iqbal, Sk. Moin Ahmed, Jaroslaw Guzinski, Marek Adamowicz, Mina Rahiminia. Rotor broken bar diagnostics in induction motor drive using Wavelet packet transform and ANFIS classification. 2011 IEEE International Electric Machines & Drives Conference (IEMDC). 2011; ():365-370.
Chicago/Turabian StyleHaitham Abu-Rub; Atif Iqbal; Sk. Moin Ahmed; Jaroslaw Guzinski; Marek Adamowicz; Mina Rahiminia. 2011. "Rotor broken bar diagnostics in induction motor drive using Wavelet packet transform and ANFIS classification." 2011 IEEE International Electric Machines & Drives Conference (IEMDC) , no. : 365-370.
This paper presents an optimization possibility of the voltage-fed continuous input current quasi-impedance source inverter (qZSI) by the introduction of the two-stage quasi-Z-source network (qZS-network). The two-stage qZS-network could be derived by the adding of one diode, one inductor and two capacitors to the traditional qZSI. The proposed two-stage qZSI inherits all the advantages of the traditional solution (voltage boost and buck functions in a single stage, continuous input current and improved reliability). Moreover, the proposed solution features over 30% shoot-through duty cycle reduction for the same voltage boost factor as compared to the conventional qZSI. Theoretical analysis of the two-stage qZSI in shoot-through and non-shoot-through operating modes is presented. The proposed and traditional qZS-networks are compared. A prototype has been built to verify the theoretical assumptions. The experimental results are presented and analyzed. Finally, a further optimization method of the proposed two-stage qZS-network is discussed.
Dmitri Vinnikov; Indrek Roasto; Ryszard Strzelecki; Marek Adamowicz. Two-stage quasi-Z-source network based step-up DC/DC converter. 2010 IEEE International Symposium on Industrial Electronics 2010, 1143 -1148.
AMA StyleDmitri Vinnikov, Indrek Roasto, Ryszard Strzelecki, Marek Adamowicz. Two-stage quasi-Z-source network based step-up DC/DC converter. 2010 IEEE International Symposium on Industrial Electronics. 2010; ():1143-1148.
Chicago/Turabian StyleDmitri Vinnikov; Indrek Roasto; Ryszard Strzelecki; Marek Adamowicz. 2010. "Two-stage quasi-Z-source network based step-up DC/DC converter." 2010 IEEE International Symposium on Industrial Electronics , no. : 1143-1148.
Variable speed cascaded doubly fed induction generators (CDFIG) have been recently proposed to apply in renewable energy generation systems i.e. small hydropower plants, windmills, shaft generators of vessels and embedded applications. CDFIG requires lower maintenance than DFIG due the absence of slip rings and brushes. It can operate with secondary side converter with fractional ratings of the total power. The use of power factor corrector (PFC) rectifiers to handle the CDFIG slip power is investigated in the paper. The three-phase Minnesota rectifier and a three-phase/switch/level PWM rectifier called Vienna rectifier are considered. Simulations using PSIM simulation software are presented.
Marek Adamowicz; Ryszard Strzelecki; Piotr Mysiak. Cascaded doubly fed induction generator using PFC rectifiers. 2009 Compatability and Power Electronics 2009, 186 -190.
AMA StyleMarek Adamowicz, Ryszard Strzelecki, Piotr Mysiak. Cascaded doubly fed induction generator using PFC rectifiers. 2009 Compatability and Power Electronics. 2009; ():186-190.
Chicago/Turabian StyleMarek Adamowicz; Ryszard Strzelecki; Piotr Mysiak. 2009. "Cascaded doubly fed induction generator using PFC rectifiers." 2009 Compatability and Power Electronics , no. : 186-190.
Mini hydropower and wind power plants have a promising future in Poland. Variable speed cascaded induction generators could be an attractive alternative to conventional double output induction generators habitually applied in mini hydropower stations. Cascaded induction generators require lower maintenance due the absence of slip rings and brushes. Unidirectional power converters can be employed in such power plants to provide simple power electronics, reduce of the maintenance and increase availability. Different topologies of rectifiers with a function of power factor correction could carry the slip power from the secondary side of the cascaded generator during the supersynchronous operation. The main benefit of these clean power rectifiers in comparison with diode rectifiers is the ability of canceling the torque harmonics of cascaded generator. The paper discuss which topology of clean power rectifiers could be applied as machine side rectifier in mini and micro power plants utilizing cascaded induction generator connected to grid.
Marek Adamowicz; Ryszard Strzelecki. Cascaded doubly fed induction generator for mini and micro power plants connected to grid. 2008 13th International Power Electronics and Motion Control Conference 2008, 1729 -1733.
AMA StyleMarek Adamowicz, Ryszard Strzelecki. Cascaded doubly fed induction generator for mini and micro power plants connected to grid. 2008 13th International Power Electronics and Motion Control Conference. 2008; ():1729-1733.
Chicago/Turabian StyleMarek Adamowicz; Ryszard Strzelecki. 2008. "Cascaded doubly fed induction generator for mini and micro power plants connected to grid." 2008 13th International Power Electronics and Motion Control Conference , no. : 1729-1733.
In the near future brushless induction machines could become the real alternative for the brush-geared doubly fed induction generators in windmills applications. Cascaded doubly fed induction generator (CDFIG) examined in the paper consists of two identical wound rotor induction machines having their rotors mechanically and electrically coupled. In CDFIG both stators of connected machines are accessible. While stator of the first machine is directly connected to the grid, the stator currents and voltages of the second machine can be manipulated for power generation requirements. The paper presents an equivalent circuit of CDFIG at steady state as well the mathematical model of the twin stator cascaded machine. The PSIM simulation software is used for a preliminary investigations of CDFIG.
Marek Adamowicz; Ryszard Strzelecki; Daniel Wojciechowski. Steady State Analysis of Twin Stator Cascaded Doubly Fed Induction Generator. 2007 Compatibility in Power Electronics 2007, 1 -5.
AMA StyleMarek Adamowicz, Ryszard Strzelecki, Daniel Wojciechowski. Steady State Analysis of Twin Stator Cascaded Doubly Fed Induction Generator. 2007 Compatibility in Power Electronics. 2007; ():1-5.
Chicago/Turabian StyleMarek Adamowicz; Ryszard Strzelecki; Daniel Wojciechowski. 2007. "Steady State Analysis of Twin Stator Cascaded Doubly Fed Induction Generator." 2007 Compatibility in Power Electronics , no. : 1-5.