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2011 IEEE Energy Conversion Congress and Exposition (ECCE 2011) Phoenix, Arizona, USA 17-22 September 2011 Pages 3458-4255 4 IEEE IEEE Catalog Number: CFPllECD-PRT ISBN: 978-1-4577-0542-7 5/5

Congress and Exposition - gbv.de · Justin Reed, Ciri Venkataramanan andFranciscoMartinez ContinuousModel ofModularMultilevel Converterand ExperimentalVerification... 4021 Steffen

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Page 1: Congress and Exposition - gbv.de · Justin Reed, Ciri Venkataramanan andFranciscoMartinez ContinuousModel ofModularMultilevel Converterand ExperimentalVerification... 4021 Steffen

2011 IEEE Energy Conversion

Congress and Exposition

(ECCE 2011)

Phoenix, Arizona, USA

17-22 September 2011

Pages 3458-4255

4 IEEE IEEE Catalog Number: CFPllECD-PRT

ISBN: 978-1-4577-0542-7

5/5

Page 2: Congress and Exposition - gbv.de · Justin Reed, Ciri Venkataramanan andFranciscoMartinez ContinuousModel ofModularMultilevel Converterand ExperimentalVerification... 4021 Steffen

Session 81 - Single Phase

AC-DC Rectifier: Topology

A Transformerless Single-Stage AC/DC Converter with Low Output Voltage 3458Shu Kong Ki and Dylan Dah-Chuan Lu

Novel Bidirectional AC-DC MOSFET Converter for

Energy Storage System Applications 3466

Hao Qian, Jih-Sheng Lai and Wensong Yu

Dynamic Behavior of Single-Phase Full-Wave Rectifiers with

Instantaneous Constant-Power Loads 3472

Chimaobi Onwuchekwa and Alexis Kwasinski

Session 82 - Contactless Power Transfer

Free Positioning for Inductive Wireless Power System 3480

Eberhard Waffenschmidt

A Contactless Power Transfer System with Capacitively Coupled Matrix Pad 3488Chao Liu, Patrick Aiguo Hu and Xin Dai

Page 3: Congress and Exposition - gbv.de · Justin Reed, Ciri Venkataramanan andFranciscoMartinez ContinuousModel ofModularMultilevel Converterand ExperimentalVerification... 4021 Steffen

A New Tri-State-Boosf-Based Pickup Topology for

Inductive Power Transfer Applications 3495

Zeljko Pontic, Sanzhong Bai and Srdjan Lukic

A Design Methodology for Multi-kW, Large Airgap, MHz Frequency,Wireless Power Transfer Systems 3503

Seung-Hwan Lee and Robert D. Lorenz

Session 83 - Inverter Applications

High Performance Gradient Driver for Magnetic Resonance Imaging System 3511

Rixin Lai, Juan Sabate, Song Chi and Wesley Skeffington

High Performance Pulsed Power Resonant Converter for

Radio Frequency Applications 3516

Chao Ji, Pericle Zanchetta, Fabio Carastro and Jon Clare

H5TM inverter with Constant-Frequency Asynchronous Sigma-Delta Modulation 3522

Yaow-Ming Chen, Chia-Hsi Chang and Yung-Ruei Chang

Variable Sampling Frequency in Iterative Learning Current

Control for Shunt Active Filter in Aircraft Power Systems 3528Pericle Zanchetta, Jun Yi Liu, Marco Degano and Paolo Mattavelli

Session 84 - Energy Storage: Batteries

Battery Ripple Current Reduction in a Three-Phase InterleavedDC-DC Converter for 5kW Battery Charger 3535

Wujong Lee, Byung-Moon Han and Hanju Cha

Empirical Battery Model Characterizing a Utility-ScaleCarbon-Enhanced VRLA Battery 3541

Daniel Fregosi, Subhashish Bhatiacharya and Stanley Atcitty

Self-Reconfigurable Multicell Batteries 3549Taesic Kim, Wei Qiao and Liyan Qu

Evaluating the Application of Energy Storage and Day-AheadSolar Forecasting to Firm the Output of a Photovoltaic Plant 3556

Frank Kreikebaum, Rohit Moghe, Anish Prasai and Deepak Divan

Session 85 - Switched Reluctance Machines

Design of Switched Reluctance Motor Competitive to 60 kW IPMSM inThird Generation Hybrid Electric Vehicle

Kyohei Kiyota and Akira Chiba3562

Page 4: Congress and Exposition - gbv.de · Justin Reed, Ciri Venkataramanan andFranciscoMartinez ContinuousModel ofModularMultilevel Converterand ExperimentalVerification... 4021 Steffen

Torque Rippie Minimization of Switched Reluctance

Machines through Current Profiling 3568

Rajib Mikail, Yilmaz Sozer, Iqbal Husain, Mohammad Islam and Tomy Sebastian

Switched Reluctance Generator Controls for Optimal Power

Generation and Battery Charging 3575

Sandeep Narla, Yilmaz Sozer and Iqbal Husain

Characteristics of Axial Type Switched Reluctance Motor 3582

Hiromu Arihara and Kan Akatsu

Session 86 - Drive Control

Control of Induction Machine with Extended Range of

Maximum Torque Capability for Traction Drives 3590

Bin Gu and Jih-Sheng Lai

Application of One-Cycle Control to Sfator Field-Oriented Control 3595

Alberto Soto-Lock, Edison Da Silva, Malik Elbuluk and Cursino Jacobina

Zero-Speed Operation of CSI-Fed Induction Motor Drive 3603

Fangrui Liu, Bin Wu, Manish Pande and Navid Zargari

Input Power Factor Compensation for PWM-CSC based

High-Power Synchronous Motor Drives 3608

Jingya Dai, Manish Pande and Navid Zargari

Session 87 - Solar PV SystemDesign and Architecture

Development of an Autonomous Distributed Maximum

Power Point Tracking PV System 3614

Yaow-Ming Chen, Cheng-Wei Chen and Yang-Lin Chen

Progressive Smooth Transition for Four-Switch Buck-Boost

Converter in Photovoltaic Applications 3620

Yaow-Ming Chen, Yang-Lin Chen and Cheng-Wei Chen

Photovoltaic-Wind Hybrid System with Battery Back-Up Optimized for

Apartment Complexes and other Community Living Environments 3626

Mohammad Bagher Shadmand, Murali Pasupuleti and Robert Balog

Flexible Electrical Power System Controller Design and Battery

Integration for 1U to 12U CubeSats 3633

Shailesh Notani and Subhashish Bhattacharya

Page 5: Congress and Exposition - gbv.de · Justin Reed, Ciri Venkataramanan andFranciscoMartinez ContinuousModel ofModularMultilevel Converterand ExperimentalVerification... 4021 Steffen

Session 88 - DC-DC Converter Controls III

Seamless Boost Converter Control in Critical Boundary

Condition for Fuel Cell Power Conditioning System 3641

Tai-Sik Hwang and Sung-Yeul Park

Enhanced Load Step Response for a Bi-Directional DC-DC Converter 3649

Dinesh Sekhar Segaran, Grahame Holmes and Brendan McGrath

A Switching Strategy for Multiple-Input Converters 3657

Chimaobi Onwuchekwa and Alexis Kwasinski

Sliding-Mode Control of Quasi-Z-Source Inverter with

Battery for Renewable Energy System 3665

Jianfeng Liu, Shuai Jiang, Dong Cao, Xi Lu and Fangzheng Peng

Session 89 - Permanent MagnetMachine Optimization

Automated Bi-Objective Design Optimization of Multi-MW Direct-Drive

PM Machines using CE-FEA and Differential Evolution 3672

Gennadi Sizov, Peng Zhang, lonel Dan, Demerdash Nabeel and Marius Rosu

Fast Optimization of an IPMSM with Space Mapping Technique 3679

Stephane Vivier, Didier Lemoine and Guy Friedrich

Minimization of Cogging Torque in a Small Axial-Flux

PMSG with a Parallel-Teeth Stator 3687

John Wanjiku, Harfmutjagau, Azeem Khan and Paul Barendse

A Review of Recent Developments in Electrical Machine Design OptimizationMethods with a Permanent Magnet Synchronous Motor Benchmark Study 3694

Yao Duan and Dan lonel

Session 90 - Inverter PWM Techniques

A Novel Switching Loss Minimized PWM Method for a High SwitchingFrequency Three-Level Inverter with a SiC Clamp Diode 3702

Nam-Joon Ku, Hong-Ju Jung, Rae-Young Kim and Dong-Suk Hyun

SDRE Control of Single Phase PWM Inverter usingFPGA based Hardware Controller 3708

Takeaki Fujimoto, Hiroki Uchida and Yokoyama Tomoki

Introducing the Elliptical Carrier for PWM Inverters: Derivation and

Properties for Phase-Shift Compensation 3714

Lucas Sinopoli and Martin Ordonez

Page 6: Congress and Exposition - gbv.de · Justin Reed, Ciri Venkataramanan andFranciscoMartinez ContinuousModel ofModularMultilevel Converterand ExperimentalVerification... 4021 Steffen

A New Three-Phase Hybrid Five-LeveJ Inverter with Reduced

Number of High-Frequency Switching Devices 3720

Liviu Mihalache and Yctosuo Xue

Session 91 - STATCOM Controls

Negative-Sequence Reactive-Power Control by a PWM STATCOM based on a

Modular Multilevel Cascade Converter (MMCC-SDBC) 3728

Makoto Hagiwara, Ryo Maeda and Hirofumi Akagi

A Unified Modular Transformer Converter (MTC) System with

Advanced Angle Control Structure 3736

Babak Parkhideh and Subhashish Bhattacbarya

A DSTATCOM with ADALINE Algorithm for Current Compensation in

Distributed Generation Systems 3744

Yin-Ching Wang, Shou-Fu Li and Tzung-Lin Lee

Instantaneous Phase-Locked Loop for Performance Improvement of

System with STATCOM under Single-Line to Ground Fault 3750

Xi Zhengping, Babak Parkhideh and Subhashish Bhattacharya

Session 92 - AC-DC Rectifier Controls II

AC Stability of High Power Factor Multi-Pulse Rectifiers 3758

Rolando Burgos, Dushan Boroyevich, Fred Wang, Karimi Kamiar and Francis Gerald

Multiloop Interleaved Control for Two-Switch Two-CapacitorThree-Level SMR without Capacitor Voltage Balancing Loop 3766

Jhen-Yu Liao and Hung-Chi Chen

HF Voltage Generation in a Multi-State Switching Cells-Based

Single-Phase Multilevel PFC Rectifierer 3773

Marcio Ortmann, Samir Mussa and Marcelo Heldwein

Low-Frequency Leakage Current Reduction using Active Control of

Single-Phase PWM Rectifier 3778

Dong Dong, Dushan Boroyevich and Paolo Mattavelli

Session 93 - DC-DC Converters:

Passive Components

A Novel Winding Layout Strategy for Planar Transformer Applicable to

High Frequency High Power DC-DC Converters 3786

Majid Pahlevaninezhad, Pritam Das, Josef Drobnik, Praveen Jain,

Alireza Bakhshai and Gerry Moschopoulos

Page 7: Congress and Exposition - gbv.de · Justin Reed, Ciri Venkataramanan andFranciscoMartinez ContinuousModel ofModularMultilevel Converterand ExperimentalVerification... 4021 Steffen

Proposal and Validation of a Medium-Frequency Power

Transformer Design Methodology 3792

Irma Villar, Asier Garcia-Bediaga, Unai Viscarret, Ion Etxeberria-Otadui and Alfred Rufer

Novel Concepts for High Frequency High Efficiency Transformer Design 3800

Dianbo Fu and Shuo Wang

A Novel Integrated Multi-Elements Resonant Converter 3808

Daocheng Huang, Pengju Kong, Fred. C. Lee and Dianbo Fu

Session 94 - General Inverter Technologies

An Improved Virtual Resistance Damping Methodf for

Grid-Connected Inverters with LCL Filters 3816

Yi Lei, Zhengming Zhao, Fanbo He, Sizhao Lu and Lu Yin

Modeling and Digital Control of LCLC Resonant Inverter with Varying Load 3823

Scott Jensen, Luca Corradini, Miguel Rodriguez and Dragan Maksimovic

Analysis and Characterization of DC Bus Ripple Current of Two-Level

Inverters using The Equivalent Centered Harmonic Approach 3830

Ufuk Ayhan and Ahmet Hava

Model Predictive Control of Z-Source Neutral Point Clamped Inverter 3838

Wei Mo, Poh Chiang Loh and Frede Blaabjerg

Session 95 - Ocean and Wave Energy

Harvesting I

Wave Energy Converter with Wideband Power Absorption 3844

Timothy Lewis, Annette von Jouanne and Ted Brekken

Efficient Energy Harvester for Microbial Fuel Cells using DC/DC Converters 3852

Jae-Do Park and Zhiyong Ren

Universal Power Management IC for Small-Scale EnergyHarvesting with Adaptive Impedance Matching 3859

Na Kong, T. Shaver Deyerle IV and Dong Sam Ha

Design and Experiments of Linear Tubular Generators for the

Inertia I Sea Wave Energy Converter 3864

Giovanni Bracco, Ermanno Giorcelli, Giuliana Mattiazzo, Ciro Attaianese and Silvio Carbone

Page 8: Congress and Exposition - gbv.de · Justin Reed, Ciri Venkataramanan andFranciscoMartinez ContinuousModel ofModularMultilevel Converterand ExperimentalVerification... 4021 Steffen

Session 96 - Power Devices: Measurement and

Characterization

Automatic Measurement of the Reverse Recovery Behavior of Ultra-Fast Diodes 3872

Juergen Stahl, Daniel Kuebrich, Alexander Pawellek, Christian Oeder and Thomas Duerbaum

Does Power Devices Sensitivity to Mechanical Stresses Can be

Used as Sensor for Power Assembly Health Monitoring? 3879

Florence Capy, Stephane Azzopardi, Kamal El Boubkari, Yassine Belmehdi and Jean-Yves Deletage

High-Bandwidth, High-Fidelity In-Circuit Measurement of Power

Electronic Switching Waveforms for EMI Generation Analysis 3886

Niall Oswald, Bernard Stark, Neville McNeill and Derrick Holliday

Experimental Study of Power Module with SiC Devices 3894

Dong Jiang, Fan Xu, Fei Wang, Timothy Junghee Han and Leon Tolbert

Session 97 - Drive Issues II

Control of PWM Voltage Source Inverter in the Pulse Dropping Region to

Reduce Reflected Wave Motor Over-Voltage 3900

Rangarajan Tallam and David Leggate

Embedded-Friendly Online Dead-Time Compensation using PWM Timer 3906

Takahiro Suzuki, Kiyoshi Sakamoto, Toshihiro Takeuchi and Yasuo Notohara

Feedforward Control for SPMSM with Final State Control based on

Voltage Limit Circle with Transient Term 3913

Takayuki Miyajima, Hiroshi Fujimoto and Masami Fujitsuna

On-line Condition Monitoring for MOSFET and IGBT Switches in

Digitally Controlled Drives 3920

Jason Anderson and Robert Cox

Session 98 - Grid Interactive

Renewable Energy Systems

Utility Grid Impact with High Penetration PV Micro-Inverters Operating under

Burst Mode using Simplified Simulation Model 3928

Zheng Zhao, Kuan-Hung Wu, Jih-Sheng Lai and Wensong Yu

Energy Capture Improvement of a Solar PV System with a Multilevel Inverter 3933

Nayeem Mahmud, Yilmaz Sozer and Iqbal Husain

A DC-link Voltage Control Scheme for Single-Phase Grid-Connected PV Inverters...

3941

Fanbo He, Zhengming Zhao, Liqiang Yuan and Sizhao Lu

Page 9: Congress and Exposition - gbv.de · Justin Reed, Ciri Venkataramanan andFranciscoMartinez ContinuousModel ofModularMultilevel Converterand ExperimentalVerification... 4021 Steffen

Session 99 - DC-DC Converters: Topologies III

Canonical Small-Signal Model of Double-Input Converters based on H-Bridge Cells..3946

Reza Ahmadi and Mehdi Ferdowsi

A Novel Half-Bridge Converter with Current Ripple Reduction 3954

Ching-Shan Leu and Trong Nha Quang

Design Considerations of a Multiple-Input Isolated Single Ended PrimaryInductor Converter (SEPIC) for Distributed Generation Sources 3960

Sheng-Yang Yu, Ruichen Zhao and Alexis Kwasinski

A Variable Frequency Soft Switching Controlled Boost-FlybackConverter for High Step-Up Applications 3968

Junjun Zhang, Hongfei Wu, Yan Xing, Kai Sun and Xudong Ma

Session 100 - Special Application Machines

Damper Windings for the Magnetic Gear 3974

Siavash Pakdeiian, Nicolas Frank and Hamid Toliyat

Experimental Evaluation of a Motor Integrated Permanent Magnet Gear 3982

Peter Rasmussen, Kasper Koetter, Tommy Frandsen and Kenneth Jessen

A Line-Fed Permanent Magnet Motor Solution for Drum-Motor and

Conveyor-Roller Applications 3990

Mircea Popescu, David Staton, Steven Jennings, Thomas Barucki andJoachim Schnuettgen

Design Study of a Three-Phase Brushless Exciter for Aircraft Starter/Generator 3998

Antonio Griffo, Rafal Wrobel, Adrian Mot, Jason Yon and Phil Mellor

Session 101 - Modular Multilevel Converters

A New 3-Phase AC/AC Modular Multilevel Converter with

Six Hexagonally Arranged Branches 4005

Lennart Baruschka and Axel Mertens

Complex Phasor Modeling and Control of Modular Multilevel Inverters 4013

Justin Reed, Ciri Venkataramanan and Francisco Martinez

Continuous Model of Modular Multilevel Converter and Experimental Verification ... 4021Steffen Rohner, Jens Weber and Steffen Bernet

Capacitor Voltage Balancing Control based on CPS-PWM ofModular Multilevel Converter

Xiaoqian Li, Qiang Song, Jianguo Li and Wenhua Liu

4029

Page 10: Congress and Exposition - gbv.de · Justin Reed, Ciri Venkataramanan andFranciscoMartinez ContinuousModel ofModularMultilevel Converterand ExperimentalVerification... 4021 Steffen

Session 102 - Active Filters Applications

Design and Testing of a Medium Voltage Controllable Network

Transformer Prototype with an integrated Hybrid Active Filter 4035

Debrup Das, Javier Munoz, Rajendra Prasad Kandula, Ron Harley, Deepak Divan andJoe Schatz

A High Power Medium-Voltage DC Amplifier System 4043

Hesam Mirzaee, Subhashish Bhattacharya and Sandeep Bala

Study of a New Technique to Reduce the DC-Link Capacitor in a

Power Electronic System by using a Series Voltage Compensator 4051

Huai Wang and Henry Chung

Directional Triplen Hybrid Active Filter for Radial Systems 4058

Rajendra Prasad Kandula, Jorge E. Hernandez and Deepak Divan

Session 103 - Three Phase AC-DC Rectifiers

Selective Harmonic Compensation (SHC) PWM for

Grid-Interfacing High-Power Converters 4066

Hua Zhou, Yun Wei Li, Navid R. Zargari and Zhongyuan Cheng

Development of an All SiC High Power Density Three-Phase

Rectifier with Interleaving 4073

Di Zhang, Puqi Ning, Fred Wang, Dushan Boroyevich, Rolando Burgos, Kamiar Karimi, Vikram

Immanuel and Solodovnik Eugene

A Multi-Carrier PWM for Parallel Three-Phase Active Front-End Converters 4081

Chung-Chuan Hou

New Considerations in the Input Filter Design of a Three-Phase

Buck-Type PWM Rectifier for Aircraft Applications 4087

Marcelo Silva, Nico Hensgens, Jesus Oliver, Pedro Alou, Oscar Garcia and Jose A Cobos

Session 104 - Soft-Switching Inverters

Dynamic Analysis and Control of a Zone-Control Induction Heating System 4093

Ngoc Ha Pham, Hideaki Fujita, Kazuhiro Ozaki and Naoki Uchida

1/3 Weight Core of a Capacitor-Less ARCP Method Three-Phase

Voltage Source Soft-Switching Inverter Suitable for EV 4101

Hirotaka Toda and Masayoshi Yamamoto

Switching Control Strategy to Extend the ZVS Operating Range of a

Dual Active Bridge AC/DC Converter 4107

Jordi Everts, Jeroen Van den Keybus and Johan Driesen

Page 11: Congress and Exposition - gbv.de · Justin Reed, Ciri Venkataramanan andFranciscoMartinez ContinuousModel ofModularMultilevel Converterand ExperimentalVerification... 4021 Steffen

Session 105 - Ocean and Wave EnergyHarvesting II

Experimental Evaluation of a Doubly-Fed Linear Generator for

Ocean Wave Energy Applications 4115

Jennifer Vining, Giri Venkataramanan and Thomas Lipo

Per-Unit Wave Energy Converter System Analysis 4123

Timothy Lewis, Annette von Jouanne and Ted Brekken

Session 106 - IGBT Modules

Diagnostic Characterization of High-Power IGBTs with Field Instrumentation:

Pitfalls in using Curve Tracers Only and Improvements by Oscilloscopes 4130

Pierluigi Tenca and Filippo Chimento

Characterization of a 6.5 kV / 500 A IGBT Module in a Series Resonant Converter..4138

Lars Lindenmueller, Steffen Bernet, Rodrigo Alvarez and Philipp Kleinichen

Turn-On Loss vs. Free-Wheel Diode Recovery DV/DT in IGBT Modules 4144John Donlon, Eric Motto, Marco Honsberg, Thomas Radke and Tom Matsuoka

Session 107 - DC Microgrids

Game Theoretic Bus Selection in DC Power Systems 4148

Nishantha Ekneligoda and Wayne Weaver

Control of Parallel-Connected Bidirectional AC-DC Converters in

Stationary Frame for Microgrid Application 4153Xiaonan Lu, Josep Guerrero, Remus Teodorescu, Tamas Kerekes and Kai Sun

DC-Bus Voltage Regulation and Power Compensation withBi-Directional Inverter in DC-Microgrid Applications 4161

Tsai-Fu Wu, Chia-Ling Kuo, Kun-Han Sun and Yuan-Chih Chang

Session 108 - Multiphase DC-DC Converters

Impact of Input and Output Voltage Perturbation on the Behavior ofAutomotive Multi-Phase Converters with Coupled Inductors 4169

Sebastian Utz and Johannes Pforr

H2-Optimal Thermal Management for Multi-Phase Current Mode Buck Converters.4177

Mohammad Shawkat Zaman, Pearl (Kej Cao, Olivier Trescases and Wai Tung Ng

Design and Characterization of a Three-Phase Dual Active Bridge DC/DC Converterin Wye-Delta Connection for a High Frequency and High Power Applications 4183

Seunghun Baek, Sumit Dutfa and Bhattacharya Subhashish

Page 12: Congress and Exposition - gbv.de · Justin Reed, Ciri Venkataramanan andFranciscoMartinez ContinuousModel ofModularMultilevel Converterand ExperimentalVerification... 4021 Steffen

Session 109 - Synchronous Reluctance

Machines

Rotor Structure for Reducing Demagnetization of Magnet in a PMASynRM with

Ferrite Permanent Magnet and its Characteristics 4189

Masayuki Sanada, Yukinori Inoue and Shigeo Morimoto

Performance Evaluation of a High Power DensityPMASynRM with Ferrite Magnets 4195

Shohei Ooi, Shigeo Morimoto, Masayuki Sanada and Yukinori Inoue

Magnet Minimization in IPM-PMASR Motor Design for

Wide Speed Range Application 4201

Paolo Guglielmi, Barbara Boazzo, Gianmario Pellegrino, Eric Armando and Alfredo Vagati

Session 110 - Boost Inverters

Switched-Boost Inverter based on Inverse Watkins-Johnson Topology 4208Santanu Mishra, Ravindranath Adda and Avinash Joshi

High Voltage Gain Boost Converter Topology for Grid Connected Systems 4212

Mohamed Orabi, Moustafa Mousa, Mahrous Ahmed and Mohamed Youssef

High Step-Up Single-Stage Boost Inverter 4218Yufei Zhou, Wenxin Huang, Jianwu Zhao and Ping Zhao

Session 111 - Utility Applications

Transformer less Intelligent Power Substation Design with

15kV SiC IGBT for Grid Interconnection 4225

Kamalesh Hatua, Sumit Duha, Awneesh Tripathi, Seunghun Baek, Giti Karimi and Subhashish

Bhattacharya

A Half-Bridge Inverter based Current Balancer with the Reduced DC

Capacitors in Single-Phase Three-Wire Distribution Feeders 4233

Yusuke Baba, Masayuki Okamoto, Eiji Hiraki and Toshihiko Tanaka

Design Aspects of a Square-Wave Series Voltage Compensator 4240

Igor A. Pires, Braz de J. Cardoso Filho and Sidelmo M. Silva

Series Connected IGCT based Three-Level Neutral Point Clamped VoltageSource Inverter Pole for High Power Converters 4248

Subhashish Bhattacharya and Saman Babaei