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Prof. Tsuyoshi Hanamoto
Kyushu Institute of Technology

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Research Keywords & Expertise

0 Motor Control
0 Power Conversion
0 FPGA technology
0 Power Electronics and AC Machine Drive System
0 Power Electronics Technology

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Power Conversion
Motor Control

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Journal article
Published: 05 February 2021 in Electronics
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In this paper, finite-set model-predictive control (FS-MPC) is inducted for a motor drive system. The dynamic response and multiple constraint handling nature of FS-MPC are the major factors that stand out among the controller family. However, for real-time implementation, the computational burden of FS-MPC is a primary concern. Due to the parallel processing nature and discrete nature of the hardware platform, the field-programmable gate array (FPGA) can be an alternative solution for the real-time implementation of the controller algorithm. The FPGA is capable of handling the computational requirements for FS-MPC implementation; however, the system development involves multiple steps that lead to a time-consuming debugging process. Moreover, specific hardware coding skill makes it more complex, corresponding to an increase in system complexity, which leads to a tedious task for the system development. This paper presents a FPGA-based implementation of the predictive current control of a permanent magnet synchronous motor (PMSM). FS-MPC of the PMSM drive system is designed and implemented using the digital model integration approach provided by the Xilinx system generator (XSG) and VIVADO platform. The step change in the load disturbance as well as the reference speed is considered for the analysis of the controller for the motor drive system. Moreover, the steady state error and harmonic distortion in the motor current is considered for an in-depth analysis of the system performance corresponding to different sampling frequencies.

ACS Style

Ipsita Mishra; Ravi Tripathi; Vijay Singh; Tsuyoshi Hanamoto. Step-by-Step Development and Implementation of FS-MPC for a FPGA-Based PMSM Drive System. Electronics 2021, 10, 395 .

AMA Style

Ipsita Mishra, Ravi Tripathi, Vijay Singh, Tsuyoshi Hanamoto. Step-by-Step Development and Implementation of FS-MPC for a FPGA-Based PMSM Drive System. Electronics. 2021; 10 (4):395.

Chicago/Turabian Style

Ipsita Mishra; Ravi Tripathi; Vijay Singh; Tsuyoshi Hanamoto. 2021. "Step-by-Step Development and Implementation of FS-MPC for a FPGA-Based PMSM Drive System." Electronics 10, no. 4: 395.

Journal article
Published: 30 November 2020 in Applied Sciences
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Magnetic gears (MGs) technology is studied widely among research institutions, with several improvements being documented. This development attracts a high amount of attention due to the demand in the development of magnetic gears towards higher performance than the conventional mechanical counterpart. In general, the design is complicated and there is a lack in detailed references for designing an MG for specific transmission torque as required by its application. Trial-and-error approaches have been the norm in achieving the desired torque by referring the existing MGs for the desired value of torque. This paper presents a new simplified approach towards designing an MG for the required torque and size by referring through a Maximum Transmission Torque Line (MTTL) reference. Finite element method (FEM) is used in analyzing randomly designed magnetic gears with various parameters towards the desired values of the MTTL. The proposed approach of MTTL is a new approach to estimate the total volume of permanent magnets (PMs) required for the MG to achieve the desired transmission torque. The reference line is used to generate equation relating the specific parameters of MG to develop the simplified design of MG based on the estimated total volume of PMs. This simplified way details to 8.5% of error in targeting the desired transmission torque, a means and way for the first stage of the MG design approach to reduce the conventional approaches.

ACS Style

Norhisam Misron; Luqman Mohd Saini; Ishak Aris; Chockalingam Aravind Vaithilingam; Hanamoto Tsuyoshi. Simplified Design of Magnetic Gear by Considering the Maximum Transmission Torque Line. Applied Sciences 2020, 10, 8581 .

AMA Style

Norhisam Misron, Luqman Mohd Saini, Ishak Aris, Chockalingam Aravind Vaithilingam, Hanamoto Tsuyoshi. Simplified Design of Magnetic Gear by Considering the Maximum Transmission Torque Line. Applied Sciences. 2020; 10 (23):8581.

Chicago/Turabian Style

Norhisam Misron; Luqman Mohd Saini; Ishak Aris; Chockalingam Aravind Vaithilingam; Hanamoto Tsuyoshi. 2020. "Simplified Design of Magnetic Gear by Considering the Maximum Transmission Torque Line." Applied Sciences 10, no. 23: 8581.

Journal article
Published: 13 November 2020 in Electronics
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The proportional-integral (PI)-based control for the motor drive system is commonly used in industrial applications. However, motor drive system development and prototyping are tedious tasks especially considering a field programmable gate array (FPGA)-based real-time system implementation. In addition, the time-synchronization of the feedback control loop is another vital aspect concerning sampling time for the discrete-time controller. This paper presents an FPGA-based design and development of a permanent magnet synchronous motor (PMSM) drive system considering the impact of time-synchronization corresponding to the sampling time criteria for a feedback control loop. Furthermore, the repercussion of time-synchronization is examined for the transient conditions due to a step change in load as well as motor speed. The field-oriented control (FOC) of the PMSM drive system is designed and implemented for the system authentication using a digital model integration approach provided by the Xilinx system generator (XSG) and VIVADO platform. Moreover, harmonic distortion in the motor current is considered for an in-depth analysis of the system performance corresponding to sampling time as well as switching frequencies.

ACS Style

Ipsita Mishra; Ravi Nath Tripathi; Tsuyoshi Hanamoto. Synchronization and Sampling Time Analysis of Feedback Loop for FPGA-Based PMSM Drive System. Electronics 2020, 9, 1906 .

AMA Style

Ipsita Mishra, Ravi Nath Tripathi, Tsuyoshi Hanamoto. Synchronization and Sampling Time Analysis of Feedback Loop for FPGA-Based PMSM Drive System. Electronics. 2020; 9 (11):1906.

Chicago/Turabian Style

Ipsita Mishra; Ravi Nath Tripathi; Tsuyoshi Hanamoto. 2020. "Synchronization and Sampling Time Analysis of Feedback Loop for FPGA-Based PMSM Drive System." Electronics 9, no. 11: 1906.

Journal article
Published: 01 June 2020 in IEEE Journal of Emerging and Selected Topics in Power Electronics
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Finite control set-model predictive control (FCS-MPC) for power electronic systems has been implemented using field-programmable gate array (FPGA) considering an alternative solution to handle the computational burden of the control algorithm. However, FPGA resource utilization is a concern for optimum design and development of the FCS-MPC. This paper presents, an analytical approach based implementation strategies using the Xilinx system generator (XSG) considering the real-time operation of the FCS-MPC for a three-phase voltage source inverter (VSI). Moreover, an adaptive prediction model is proposed to adapt to the change in load current. The percentage THD, dynamic response, and steady-state error are evaluated for system performance analysis. The implementation strategies are compared based on FPGA resource utilization for the FCS-MPC in stationary αβ and rotating dq frames considering fixed, approximated and adaptive values of a coefficient used for current prediction. The look-up tables (LUTs), flip-flops and DSP slices have opted as utilization indices of FPGA resources for comparative analysis. The optimum design based controller model is used for FPGA-based experimental system implementation. The simulation and experimental results are used for the performance evaluation of the FCS-MPC in both αβ and dq frames. Moreover, change in switching state constraint is included in the cost function and controller performance is evaluated corresponding to the weighting factor for approximated and adaptive coefficient values.

ACS Style

Vijay Kumar Singh; Ravi Nath Tripathi; Tsuyoshi Hanamoto. Implementation Strategy for Resource Optimization of FPGA-Based Adaptive Finite Control Set-MPC Using XSG for a VSI System. IEEE Journal of Emerging and Selected Topics in Power Electronics 2020, 9, 2066 -2078.

AMA Style

Vijay Kumar Singh, Ravi Nath Tripathi, Tsuyoshi Hanamoto. Implementation Strategy for Resource Optimization of FPGA-Based Adaptive Finite Control Set-MPC Using XSG for a VSI System. IEEE Journal of Emerging and Selected Topics in Power Electronics. 2020; 9 (2):2066-2078.

Chicago/Turabian Style

Vijay Kumar Singh; Ravi Nath Tripathi; Tsuyoshi Hanamoto. 2020. "Implementation Strategy for Resource Optimization of FPGA-Based Adaptive Finite Control Set-MPC Using XSG for a VSI System." IEEE Journal of Emerging and Selected Topics in Power Electronics 9, no. 2: 2066-2078.

Journal article
Published: 04 January 2020 in Energies
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Finite set-model predictive control (FS-MPC) is used for power converters and drives having unique advantages as compared to the conventional control strategies. However, the computational burden of the FS-MPC is a primary concern for real-time implementation. Field programmable gate array (FPGA) is an alternative and exciting solution for real-time implementation because of the parallel processing capability, as well as, discrete nature of the hardware platform. Nevertheless, FPGA is capable of handling the computational requirements for the FS-MPC implementation, however, the system development involves multiple steps that lead to the time-consuming debugging process. Moreover, specific hardware coding skill makes it more complex corresponding to an increase in system complexity that leads to a tedious task for system development. This paper presents an FPGA-based experimental implementation of FS-MPC using the system modeling approach. Furthermore, a comparative analysis of FS-MPC in stationary αβ and rotating dq frame is considered for simulation as well as experimental result. The FS-MPC for a three-phase voltage source inverter (VSI) system is developed in a realistic digital simulator integrated with MATLAB-Simulink. The simulated controller model is further used for experimental system implementation and validation using Xilinx FPGA: Zedboard Zynq Evaluation and Development Kit. The digital simulator termed as Xilinx system generator (XSG) provided by Xilinx is used for modeling-based FPGA design.

ACS Style

Vijay Kumar Singh; Ravi Nath Tripathi; Tsuyoshi Hanamoto. FPGA-Based Implementation of Finite Set-MPC for a VSI System Using XSG-Based Modeling. Energies 2020, 13, 260 .

AMA Style

Vijay Kumar Singh, Ravi Nath Tripathi, Tsuyoshi Hanamoto. FPGA-Based Implementation of Finite Set-MPC for a VSI System Using XSG-Based Modeling. Energies. 2020; 13 (1):260.

Chicago/Turabian Style

Vijay Kumar Singh; Ravi Nath Tripathi; Tsuyoshi Hanamoto. 2020. "FPGA-Based Implementation of Finite Set-MPC for a VSI System Using XSG-Based Modeling." Energies 13, no. 1: 260.

Journal article
Published: 26 August 2018 in Energies
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This paper deals with a design and experimental verification of 400-W class light-emitting diode (LED) driver with cooperative control method for two-parallel connected DC/DC converters. In the cooperative control method, one DC/DC converter is selected to supply the output current for the LED, based on the reference value of the LED current. Thus, the proposed cooperative-control strategy achieves wide dimming range operation. The discontinuous current conduction mode (DCM) operation improves the total harmonic distortion (THD) value on the AC side of the LED driver. The standard of Electrical Applications and Materials Safety Act in Japan has defined the flicker frequency and minimum optical output. The smoothing capacitors are designed by considering the power flow and LED current ripple for satisfying the standard. A prototype LED driver is constructed and tested. Experimental results demonstrate that a wide dimming operation range from 1 to 100% is achieved with a THD value less than 10% on the AC side, by the proposed control strategy. The authors compare the power conversion efficiency between Si- and SiC-metal-oxide-semiconductor field-effect transistors (MOSFETs) based LED driver. The maximum power conversion efficiency by using SiC-MOSFETs based LED driver is 91.4%. Finally, the variable switching frequency method is proposed for improving the power conversion efficiency for a low LED current region.

ACS Style

Tomoharu Yada; Yuta Katamoto; Hiroaki Yamada; Toshihiko Tanaka; Masayuki Okamoto; Tsuyoshi Hanamoto. Design and Experimental Verification of 400-WClass LED Driver with Cooperative Control Method for Two-Parallel Connected DC/DC Converters. Energies 2018, 11, 2237 .

AMA Style

Tomoharu Yada, Yuta Katamoto, Hiroaki Yamada, Toshihiko Tanaka, Masayuki Okamoto, Tsuyoshi Hanamoto. Design and Experimental Verification of 400-WClass LED Driver with Cooperative Control Method for Two-Parallel Connected DC/DC Converters. Energies. 2018; 11 (9):2237.

Chicago/Turabian Style

Tomoharu Yada; Yuta Katamoto; Hiroaki Yamada; Toshihiko Tanaka; Masayuki Okamoto; Tsuyoshi Hanamoto. 2018. "Design and Experimental Verification of 400-WClass LED Driver with Cooperative Control Method for Two-Parallel Connected DC/DC Converters." Energies 11, no. 9: 2237.

Journal article
Published: 12 April 2018 in Energies
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The conversion and control for the utilization of power generated from energy sources can be performed using a power electronic converter system. The voltage source inverter (VSI) is one of the commonly used converter topologies, being controlled by a switching control algorithm for power conversion. Finite set-model predictive control (FS-MPC) is a modern switching control algorithm and has received significant attention due to its predictive nature. In this paper, the implementation of FS-MPC is presented for the load-side current control of a three-phase VSI system using an integrated platform of MATLAB/Simulink and Xilinx system generator (XSG). The XSG provides the functionality of digital design and intuitive implementation of field-programmable gate array (FPGA) controlled systems. The additional functionality of hardware-in-the-loop (HIL) co-simulation using FPGA is used for the testing and validation of controller performance. The controller performance is validated through three platforms: MATLAB/Simulink, XSG and HIL co-simulation using ZedBoard Zynq evaluation and development FPGA kit.

ACS Style

Vijay Kumar Singh; Ravi Nath Tripathi; Tsuyoshi Hanamoto. HIL Co-Simulation of Finite Set-Model Predictive Control Using FPGA for a Three-Phase VSI System. Energies 2018, 11, 909 .

AMA Style

Vijay Kumar Singh, Ravi Nath Tripathi, Tsuyoshi Hanamoto. HIL Co-Simulation of Finite Set-Model Predictive Control Using FPGA for a Three-Phase VSI System. Energies. 2018; 11 (4):909.

Chicago/Turabian Style

Vijay Kumar Singh; Ravi Nath Tripathi; Tsuyoshi Hanamoto. 2018. "HIL Co-Simulation of Finite Set-Model Predictive Control Using FPGA for a Three-Phase VSI System." Energies 11, no. 4: 909.

Journal article
Published: 01 January 2018 in Progress In Electromagnetics Research B
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ACS Style

Shehu Mustafa Salihu; Norhisam Misron; Mohammad Lutfi Othman; Tsuyoshi Hanamoto. POWER DENSITY EVALUATION OF A NOVEL DOUBLE-STATOR MAGNETIC GEARED PERMANENT MAGNET GENERATOR. Progress In Electromagnetics Research B 2018, 80, 19 -36.

AMA Style

Shehu Mustafa Salihu, Norhisam Misron, Mohammad Lutfi Othman, Tsuyoshi Hanamoto. POWER DENSITY EVALUATION OF A NOVEL DOUBLE-STATOR MAGNETIC GEARED PERMANENT MAGNET GENERATOR. Progress In Electromagnetics Research B. 2018; 80 ():19-36.

Chicago/Turabian Style

Shehu Mustafa Salihu; Norhisam Misron; Mohammad Lutfi Othman; Tsuyoshi Hanamoto. 2018. "POWER DENSITY EVALUATION OF A NOVEL DOUBLE-STATOR MAGNETIC GEARED PERMANENT MAGNET GENERATOR." Progress In Electromagnetics Research B 80, no. : 19-36.

Journal article
Published: 04 December 2017 in Energies
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This paper presents the design, fabrication and experimental power analysis of a novel double-stator magnetic geared permanent magnet (DSMGPM) machine which comprises of a double-stator permanent-magnet (PM) machine integrated a with triple rotor magnetic gear. The proposed machine can upscale the low-speed rotating magnetic field of the prime PMs on the prime rotor by using the modulation effect produced from the pole-pieces to high-speed rotating magnetic field from the field PMs. The low-speed prime rotor can also increase the speed of the field PM rotor and excite the coil windings to induce an electromotive force (EMF) resulting in electrical power. Thus, the machine is proposed for power generation in low-speed renewable energy applications such as wind turbines and tidal power generators. The proposed machine topology is presented and discussed while the performance power characteristics are evaluated experimentally. A prototype is fabricated and the measured results are in good agreement with the calculated results, therefore validating the proposed magnetic geared machine design.

ACS Style

Shehu Salihu Mustafa; Norhisam Misron; Mohammad Lutfi Othman; Hanamoto Tsuyoshi. Power Characteristics Analysis of a Novel Double-Stator Magnetic Geared Permanent Magnet Generator. Energies 2017, 10, 2048 .

AMA Style

Shehu Salihu Mustafa, Norhisam Misron, Mohammad Lutfi Othman, Hanamoto Tsuyoshi. Power Characteristics Analysis of a Novel Double-Stator Magnetic Geared Permanent Magnet Generator. Energies. 2017; 10 (12):2048.

Chicago/Turabian Style

Shehu Salihu Mustafa; Norhisam Misron; Mohammad Lutfi Othman; Hanamoto Tsuyoshi. 2017. "Power Characteristics Analysis of a Novel Double-Stator Magnetic Geared Permanent Magnet Generator." Energies 10, no. 12: 2048.

Journal article
Published: 12 March 2017 in Energies
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Three-phase two-level voltage source converters are used for distribution static compensator (DSTATCOM) applications and can be replaced by a multilevel inverter. In this paper, an LCL filter interfaced cascaded H-bridge multilevel inverter-based (CHBMLI) DSTATCOM is simulated and its performance is analyzed considering the system parameters. The analysis considers factors including the switching frequency, modulation index, and filter parameters of a DSTATCOM system. The LCL filter design and analysis for the low switching frequency operation of CHBMLI is proposed in this paper. Phase shift pulse-width modulation is used for the generation of switching signals. The reference current is generated using synchronous reference frame theory (SRFT) for reactive power and harmonic compensations. The simulation model of the CHBMLI-based DSTATCOM system is developed in MATLAB Simulink. The results are demonstrated for a linear/non-linear load under unbalanced conditions, considering the voltage sag and swell in the system due to a disturbance in the load.

ACS Style

Ravikant Pandey; Ravi Nath Tripathi; Tsuyoshi Hanamoto. Comprehensive Analysis of LCL Filter Interfaced Cascaded H-Bridge Multilevel Inverter-Based DSTATCOM. Energies 2017, 10, 346 .

AMA Style

Ravikant Pandey, Ravi Nath Tripathi, Tsuyoshi Hanamoto. Comprehensive Analysis of LCL Filter Interfaced Cascaded H-Bridge Multilevel Inverter-Based DSTATCOM. Energies. 2017; 10 (3):346.

Chicago/Turabian Style

Ravikant Pandey; Ravi Nath Tripathi; Tsuyoshi Hanamoto. 2017. "Comprehensive Analysis of LCL Filter Interfaced Cascaded H-Bridge Multilevel Inverter-Based DSTATCOM." Energies 10, no. 3: 346.

Journal article
Published: 22 December 2016 in Energies
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This paper presents a novel double-stator permanent-magnet machine integrated with a triple rotor magnetic gear structure, which is proposed to address problems of mechanical geared generators for low-speed applications. Torque transmission is based on three rotors consisting of prime permanent-magnet (PM) poles in the middle rotor and field PM poles in the inner and outer rotors. The proposed machine combines the functions of magnetic gearing and electrical power generation. The operating principles of the magnetic gear and generator are discussed and the torque distribution characteristics of the integrated machine are analysed using the 2D finite-element method (2D FEM). Also the power, torque, and speed characteristics are reported. A prototype is fabricated and tested experimentally. The predicted and measured results validate the proposed machine design.

ACS Style

Shehu Salihu Mustafa; Norhisam Misron; Norman Mariun; Mohammad Lutfi Othman; Tsuyoshi Hanamoto. Torque Distribution Characteristics of a Novel Double-Stator Permanent Magnet Generator Integrated with a Magnetic Gear. Energies 2016, 10, 2 .

AMA Style

Shehu Salihu Mustafa, Norhisam Misron, Norman Mariun, Mohammad Lutfi Othman, Tsuyoshi Hanamoto. Torque Distribution Characteristics of a Novel Double-Stator Permanent Magnet Generator Integrated with a Magnetic Gear. Energies. 2016; 10 (1):2.

Chicago/Turabian Style

Shehu Salihu Mustafa; Norhisam Misron; Norman Mariun; Mohammad Lutfi Othman; Tsuyoshi Hanamoto. 2016. "Torque Distribution Characteristics of a Novel Double-Stator Permanent Magnet Generator Integrated with a Magnetic Gear." Energies 10, no. 1: 2.

Journal article
Published: 17 August 2016 in Applied Sciences
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A new control estimator to maximize the power generated with a maximum power point estimator is introduced. The power mapping characteristics from the double-stator generator are modeled as a mathematical equation which is used to develop the estimator for maximum power tracking to maximize the generated power. The proposed estimator automatically traces the instantaneous maximum power at various load conditions. However, to stabilize the output voltage, a boost converter is used from the inverter side. The developed double-stator generator is tested with the new estimator for the maximizing power generation capability under laboratory conditions. The experimental results confirm that with the new estimator, the average power generation capability is increased by 12% and the peak value is increase by 22%.

ACS Style

Norhisam Misron; Chockalingam Aravind Vaithilingam; Nashiren Farzilah Mailah; Kudo Masaya; Tsuyoshi Hanamoto. A New Maximum Power Point Estimator Control Strategy to Maximize Output Power of the Double Stator Permanent Magnet Generator. Applied Sciences 2016, 6, 218 .

AMA Style

Norhisam Misron, Chockalingam Aravind Vaithilingam, Nashiren Farzilah Mailah, Kudo Masaya, Tsuyoshi Hanamoto. A New Maximum Power Point Estimator Control Strategy to Maximize Output Power of the Double Stator Permanent Magnet Generator. Applied Sciences. 2016; 6 (8):218.

Chicago/Turabian Style

Norhisam Misron; Chockalingam Aravind Vaithilingam; Nashiren Farzilah Mailah; Kudo Masaya; Tsuyoshi Hanamoto. 2016. "A New Maximum Power Point Estimator Control Strategy to Maximize Output Power of the Double Stator Permanent Magnet Generator." Applied Sciences 6, no. 8: 218.

Journal article
Published: 01 January 2016 in Progress In Electromagnetics Research M
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ACS Style

Shehu Mustafa Salihu; Norhisam Misron; Norman Mariun; Mohammad Lutfi Othman; Tsuyoshi Hanamoto. A NOVEL DOUBLE-STATOR PERMANENT MAGNET GENERATOR INTEGRATED WITH A MAGNETIC GEAR. Progress In Electromagnetics Research M 2016, 49, 69 -80.

AMA Style

Shehu Mustafa Salihu, Norhisam Misron, Norman Mariun, Mohammad Lutfi Othman, Tsuyoshi Hanamoto. A NOVEL DOUBLE-STATOR PERMANENT MAGNET GENERATOR INTEGRATED WITH A MAGNETIC GEAR. Progress In Electromagnetics Research M. 2016; 49 ():69-80.

Chicago/Turabian Style

Shehu Mustafa Salihu; Norhisam Misron; Norman Mariun; Mohammad Lutfi Othman; Tsuyoshi Hanamoto. 2016. "A NOVEL DOUBLE-STATOR PERMANENT MAGNET GENERATOR INTEGRATED WITH A MAGNETIC GEAR." Progress In Electromagnetics Research M 49, no. : 69-80.

Research article
Published: 19 October 2015 in Mathematical Problems in Engineering
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To enhance the performance of stand-alone battery based system and to achieve the continuous power transmission, the behavior of multidirectional matrix converter (MDMC) has been analyzed in different operation modes. A systematic method interfacing a renewable source, a storage battery, and a load is proposed for a stand-alone battery based power system (SABBPS) to utilize the MDMC as PWM converter, inverter, or PWM converter and inverter in different operation modes. In this study, the Extended Direct Duty Pulse Width Modulation (EDDPWM) technique has been applied to control the power flow path between the renewable source, load, and the battery. Corresponding to generator voltage, input frequency, and loads demands, several operating states and control strategies are possible. Therefore, the boundaries and distribution of operation modes are discussed and illustrated to improve the system performance. The mathematical equation of the EDDPWM under different operation modes has been derived to achieve the maximum voltage ratio in each mode. The theoretical and modulation concepts presented have been verified in simulation using MATLAB and experimental testing. Moreover, the THD, ripple, and power flow direction have been analyzed for output current to investigate the behavior of system in each operation mode.

ACS Style

Saman Toosi; Norhisam Misron; Tsuyoshi Hanamoto; Ishak Bin Aris; Mohd Amran Mohd Radzi; Hiroaki Yamada. The Study of Operation Modes and Control Strategies of a Multidirectional MC for Battery Based System. Mathematical Problems in Engineering 2015, 2015, 1 -14.

AMA Style

Saman Toosi, Norhisam Misron, Tsuyoshi Hanamoto, Ishak Bin Aris, Mohd Amran Mohd Radzi, Hiroaki Yamada. The Study of Operation Modes and Control Strategies of a Multidirectional MC for Battery Based System. Mathematical Problems in Engineering. 2015; 2015 ():1-14.

Chicago/Turabian Style

Saman Toosi; Norhisam Misron; Tsuyoshi Hanamoto; Ishak Bin Aris; Mohd Amran Mohd Radzi; Hiroaki Yamada. 2015. "The Study of Operation Modes and Control Strategies of a Multidirectional MC for Battery Based System." Mathematical Problems in Engineering 2015, no. : 1-14.

Research article
Published: 14 September 2014 in The Scientific World Journal
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This study presents a new modulation method for multidirectional matrix converter (MDMC), based on the direct duty ratio pulse width modulation (DDPWM). In this study, a new structure of MDMC has been proposed to control the power flow direction through the stand-alone battery based system and hybrid vehicle. The modulation method acts based on the average voltage over one switching period concept. Therefore, in order to determine the duty ratio for each switch, the instantaneous input voltages are captured and compared with triangular waveform continuously. By selecting the proper switching pattern and changing the slope of the carriers, the sinusoidal input current can be synthesized with high power factor and desired output voltage. The proposed system increases the discharging time of the battery by injecting the power to the system from the generator and battery at the same time. Thus, it makes the battery life longer and saves more energy. This paper also derived necessary equation for proposed modulation method as well as detail of analysis and modulation algorithm. The theoretical and modulation concepts presented have been verified in MATLAB simulation.

ACS Style

Saman Toosi; Norhisam Misron; Tsuyoshi Hanamoto; Ishak Bin Aris; Mohd Amran Mohd Radzi; Hiroaki Yamada. Novel Modulation Method for Multidirectional Matrix Converter. The Scientific World Journal 2014, 2014, 1 -12.

AMA Style

Saman Toosi, Norhisam Misron, Tsuyoshi Hanamoto, Ishak Bin Aris, Mohd Amran Mohd Radzi, Hiroaki Yamada. Novel Modulation Method for Multidirectional Matrix Converter. The Scientific World Journal. 2014; 2014 (5):1-12.

Chicago/Turabian Style

Saman Toosi; Norhisam Misron; Tsuyoshi Hanamoto; Ishak Bin Aris; Mohd Amran Mohd Radzi; Hiroaki Yamada. 2014. "Novel Modulation Method for Multidirectional Matrix Converter." The Scientific World Journal 2014, no. 5: 1-12.

Journal article
Published: 01 January 2014 in Journal of the Japan Institute of Power Electronics
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ACS Style

Tomoharu Yada; Hiroaki Yamada; Tsuyoshi Hanamoto. A Novel Co-operational Control Method for LED Driver with Parallel-connected Flyback Converter. Journal of the Japan Institute of Power Electronics 2014, 40, 168 -175.

AMA Style

Tomoharu Yada, Hiroaki Yamada, Tsuyoshi Hanamoto. A Novel Co-operational Control Method for LED Driver with Parallel-connected Flyback Converter. Journal of the Japan Institute of Power Electronics. 2014; 40 ():168-175.

Chicago/Turabian Style

Tomoharu Yada; Hiroaki Yamada; Tsuyoshi Hanamoto. 2014. "A Novel Co-operational Control Method for LED Driver with Parallel-connected Flyback Converter." Journal of the Japan Institute of Power Electronics 40, no. : 168-175.

Journal article
Published: 29 April 2013 in Applied Sciences
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This paper proposes a novel Maximum Power Point Tracking (MPPT) control method of thermoelectric power generation for the constant load. This paper reveals the characteristics and the internal resistance of thermoelectric power module (TM). Analyzing the thermoelectric power generation system with boost chopper by state space averaging method, the output voltage and current of TM are estimated by with only single current sensor. The proposed method can seek without calculating the output power of TM in this proposed method. The basic principle of the proposed MPPT control method is discussed, and then confirmed by digital computer simulation using PSIM. Simulation results demonstrate that the output voltage can track the maximum power point voltage by the proposed MPPT control method. The generated power of the TM is 0.36 W when the temperature difference is 35 °C. This is well accorded with the V-P characteristics.

ACS Style

Hiroaki Yamada; Koji Kimura; Tsuyoshi Hanamoto; Toshihiko Ishiyama; Tadashi Sakaguchi; Tsuyoshi Takahashi. A Novel MPPT Control Method of Thermoelectric Power Generation with Single Sensor. Applied Sciences 2013, 3, 545 -558.

AMA Style

Hiroaki Yamada, Koji Kimura, Tsuyoshi Hanamoto, Toshihiko Ishiyama, Tadashi Sakaguchi, Tsuyoshi Takahashi. A Novel MPPT Control Method of Thermoelectric Power Generation with Single Sensor. Applied Sciences. 2013; 3 (2):545-558.

Chicago/Turabian Style

Hiroaki Yamada; Koji Kimura; Tsuyoshi Hanamoto; Toshihiko Ishiyama; Tadashi Sakaguchi; Tsuyoshi Takahashi. 2013. "A Novel MPPT Control Method of Thermoelectric Power Generation with Single Sensor." Applied Sciences 3, no. 2: 545-558.

Journal article
Published: 01 January 2013 in IEEJ Journal of Industry Applications
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ACS Style

Yoshihiro Okuyama; Tomohiro Tanaka; Tsuyoshi Hanamoto; Hiroaki Yamada. A New Current Vector Control Method of IPMSM in Flux Weakening Region to Prevent Inverter Voltage Saturation. IEEJ Journal of Industry Applications 2013, 2, 315 -322.

AMA Style

Yoshihiro Okuyama, Tomohiro Tanaka, Tsuyoshi Hanamoto, Hiroaki Yamada. A New Current Vector Control Method of IPMSM in Flux Weakening Region to Prevent Inverter Voltage Saturation. IEEJ Journal of Industry Applications. 2013; 2 (6):315-322.

Chicago/Turabian Style

Yoshihiro Okuyama; Tomohiro Tanaka; Tsuyoshi Hanamoto; Hiroaki Yamada. 2013. "A New Current Vector Control Method of IPMSM in Flux Weakening Region to Prevent Inverter Voltage Saturation." IEEJ Journal of Industry Applications 2, no. 6: 315-322.

Journal article
Published: 01 January 2013 in Journal of the Japan Society of Applied Electromagnetics and Mechanics
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ACS Style

Tsuyoshi Hanamoto; Hiroaki Yamada; Farzailah Mailah Nashiren; Misron Norhisam. Controller Design Using Coefficient Diagram Methods for Matrix Converter Based Unified Power Flow Controllers. Journal of the Japan Society of Applied Electromagnetics and Mechanics 2013, 21, 369 -374.

AMA Style

Tsuyoshi Hanamoto, Hiroaki Yamada, Farzailah Mailah Nashiren, Misron Norhisam. Controller Design Using Coefficient Diagram Methods for Matrix Converter Based Unified Power Flow Controllers. Journal of the Japan Society of Applied Electromagnetics and Mechanics. 2013; 21 (3):369-374.

Chicago/Turabian Style

Tsuyoshi Hanamoto; Hiroaki Yamada; Farzailah Mailah Nashiren; Misron Norhisam. 2013. "Controller Design Using Coefficient Diagram Methods for Matrix Converter Based Unified Power Flow Controllers." Journal of the Japan Society of Applied Electromagnetics and Mechanics 21, no. 3: 369-374.

Conference paper
Published: 01 November 2012 in 2012 International Conference on Renewable Energy Research and Applications (ICRERA)
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This paper proposes a novel method of suppressing inrush currents of squirrel-cage induction machines using matrix converters in wind power generation systems. In the proposed method, the output side of the matrix converter behaves as a resistor for the source current and the input side of the matrix converter compensates reactive power of the squirrel-cage induction machine. Digital computer simulation is implemented to confirm the validity and practicability of the proposed method using PSCAD/EMTDC. Simulation results demonstrate that the proposed inrush current suppressor can suppress the inrush current drastically.

ACS Style

Hiroaki Yamada; Tsuyoshi Hanamoto. A novel method of suppressing inrush currents of squirrel-cage induction machine using matrix converter in wind power generation systems. 2012 International Conference on Renewable Energy Research and Applications (ICRERA) 2012, 1 -4.

AMA Style

Hiroaki Yamada, Tsuyoshi Hanamoto. A novel method of suppressing inrush currents of squirrel-cage induction machine using matrix converter in wind power generation systems. 2012 International Conference on Renewable Energy Research and Applications (ICRERA). 2012; ():1-4.

Chicago/Turabian Style

Hiroaki Yamada; Tsuyoshi Hanamoto. 2012. "A novel method of suppressing inrush currents of squirrel-cage induction machine using matrix converter in wind power generation systems." 2012 International Conference on Renewable Energy Research and Applications (ICRERA) , no. : 1-4.