Power-Switching Converters: Medium and High Power

INTRODUCTION TO MEDIUM- AND HIGH-POWER SWITCHING CONVERTERS Market for Medium- and High-Power Converters Adjustable Speed Drives Grid Interfaces or Distributed Generation Multi-Converter Power Electronic Systems Conclusion References HIGH-POWER SEMICONDUCTOR DEVICES A View of the Power Semiconductor Market Power MOSFETs Insular Gate Bipolar Transistors Gate Turn-Off Thyristors Advanced Power Devices Problems References BASIC THREE-PHASE INVERTERS High-Power Devices Operated as Simple Switches Inverter Leg with Inductive Load Operation What Is a PWM Algorithm? Basic Three-Phase Voltage Source Inverter: Operation and Functions Performance Indices: Definitions and Terms Used in Different Countries Direct Calculation of Harmonic Spectrum from Inverter Waveforms Preprogrammed PWM for Three-Phase Inverters Modeling a Three-Phase Inverter with Switching Functions Braking Leg in Power Converters for Motor Drives DC Bus Capacitor within an AC/DC/AC Power Converter Conclusion Problems References CARRIER-BASED PULSE WIDTH MODULATION AND OPERATION LIMITS Carrier-Based Pulse Width Modulation Algorithms: Historical Importance Carrier-Based PWM Algorithms with Improved Reference PWM Used within Volt/Hertz Drives: Choice of Number of Pulses Based on the Desired Current Harmonic Factor Implementation of Harmonic Reduction with Carrier PWM Limits of Operation: Minimum Pulse-Width Limits of Operation Conclusion Problems References VECTORIAL PULSE WIDTH MODULATION FOR BASIC THREE-PHASE INVERTERS Review of Space Vector Theory Vectorial Analysis of the Three-Phase Inverter SVM Theory: Derivation of the Time Intervals Associated to the Active and Zero States by Averaging Adaptive SVM: DC Ripple Compensation Link to Vector Control: Different Forms and Expressions of Time Interval Equations in the (d,q) Coordinate System Definition of the Switching Reference Function Definition of the Switching Sequence Comparison between Different Vectorial PWM Overmodulation for SVM Volt-per-Hertz Control of PWM Inverters Conclusion Problems References PRACTICAL ASPECTS IN BUILDING THREE-PHASE POWER CONVERTERS Selection of the Power Devices in a Three-Phase Inverter Protection System Protection Management Reduction of Common-Mode EMI through Inverter Techniques Typical Building Structures of Conventional Inverters Depending on Power Level Thermal Management Conclusion Problems References IMPLEMENTATION OF PULSE WIDTH MODULATION ALGORITHMS Analog Pulse Width Modulation Controllers Mixed-Mode Motor Controller ICs Digital Structures with Counters: FPGA Implementation Markets for General-Purpose and Dedicated Digital Processors Software Implementation in Low-Cost Microcontrollers Microcontrollers with Power Converter Interfaces Motor Control Co-Processors Using the Event Manager within Texas Instruments' DSPs Conclusion References PRACTICAL ASPECTS OF IMPLEMENTING CLOSED-LOOP CURRENT CONTROL Role and Schematics Current Measurement: Synchronization with Pulse Width Modulation Current Sampling Rate: Oversampling Current Control in (a,b,c) Coordinates Current Transforms (3->2): Software Calculation of Transforms Current Control in (d,q) Models: PI Calibration Antiwind-Up Protection: Output Limitation and Range Definition Conclusion References RESONANT THREE-PHASE CONVERTERS Reducing Switching Losses through Resonance vs. Advanced Pulse-Width Multiple Devices Do We Still Get Advantages from Resonant High-Power Converters? Zero Voltage Transition of IGBT Devices Zero Current Transition of IGBT Devices Possible Topologies of Quasi-Resonant Converters Special PWM for Three-Phase Resonant Converters Problems References COMPONENT-MINIMIZED THREE-PHASE POWER CONVERTERS Solutions for Reduction of Number of Components Generalized Vector Transform Vectorial Analysis of the B4 Inverter Definition of PWM Algorithms for the B4 Inverter Influence of DC Voltage Variations and Method for Their Compensation Two-Leg Converter Used in Feeding a Two-Phase Induction Machine Conclusion Problems References AC/DC GRID INTERFACE BASED ON THE THREE-PHASE VOLTAGE SOURCE CONVERTER Particularities, Control Objectives, and Active Power Control PWM in the Control System Closed-Loop Current Control Methods Grid Synchronization Problems References PARALLEL AND INTERLEAVED POWER CONVERTERS Comparison between Converters Built of High-Power Devices and Solutions Based on Multiple Parallel Lower-Power Devices Hardware Constraints in Paralleling IGBTs Gate Control Designs for Equal Current Sharing Advantages and Disadvantages of Paralleling Inverter Legs in Respect to Using Parallel Devices Interleaved Operation of Power Converters Circulating Currents Selection of the PWM Algorithm System Controller Conclusion Problems References INDEX