Rui Li - Soft-Switching Technology for Three-phase Power Electronics Converters

12 Chapter 12Figure 12.1 Different topologies: (a) conventional BTB converter; (b) ZVS BT...Figure 12.2 Modulation signals of the rectifier and inverter.Figure 12.3 Two PWM schemes: (a) traditional SPWM scheme; (b) EA-PWM scheme....Figure 12.4 Key waveforms in one switching period.Figure 12.5 Stage 1 ( t 0– t 1).Figure 12.6 Stage 2 ( t 1– t 2).Figure 12.7 Stage 3 ( t 2– t 3).Figure 12.8 Stage 4 ( t 3– t 4).Figure 12.9 Stage 5 ( t 4– t 5).Figure 12.10 Stage 6 ( t 5– t 6).Figure 12.11 Stage 7 ( t 6– t 7).Figure 12.12 Stage 8 ( t 7– t 8).Figure 12.13 Stage 9 ( t 8– t 9).Figure 12.14 Stage 10 ( t 9– t 10).Figure 12.15 Stage 11 ( t 10– t 11).Figure 12.16 Stage 12 ( t 11– t 12).Figure 12.17 Stage 13 ( t 12– t 13).Figure 12.18 Stage 14 ( t 13– t 14).Figure 12.19 Stage 15 ( t 14– t 15).Figure 12.20 Stage 16 ( t 15– t 16).Figure 12.21 Stage 17 ( t 16– t 17).Figure 12.22 Stage 18 ( t 17– t 18).Figure 12.23 Stage 19 ( t 18– t 19).Figure 12.24 First resonant stage.Figure 12.25 Simplified process of the first resonant stage: (a) Step I; (b)...Figure 12.26 Second resonant stage.Figure 12.27 Equivalent circuit of the second resonant stage.Figure 12.28 Waveform of i S7in a switching period.Figure 12.29 Current stress with different Z r.Figure 12.30 Solution region for the resonance parameters.Figure 12.31 Envelope curve of v cland i Lrat different load levels under a ...Figure 12.32 Envelope curve of v cland i Lrunder different load conditions: ...Figure 12.33 Switching loss of SCT2080KE.Figure 12.34 Switching loss with different capacitors: (a) SCT2080KE; (b) C2...Figure 12.35 Loss distribution of traditional BTB converter at different swi...Figure 12.36 Loss distribution of ZVS BTB converter at different switching f...Figure 12.37 Loss comparison – ZVS BTB converter (150 kHz) vs. traditional B...Figure 12.38 Loss comparison – ZVS BTB converter (150 kHz) vs. traditional B...Figure 12.39 9 kW ZVS BTB prototype.Figure 12.40 Experimental waveforms with a three‐phase balanced load. (a) i a...Figure 12.41 Waveforms for ZVS operation of S i4with a balanced 3 kW load at...Figure 12.42 Waveforms for ZVS operation of S o2with a balanced 3 kW load at...Figure 12.43 Waveforms for ZVS operation of S 7with a balanced 3 kW load at ...Figure 12.44 Waveforms for ZVS operation of S o2with a balanced 9 kW load at...Figure 12.45 Waveforms for ZVS operation of S o2with a balanced 9 kW load at...Figure 12.46 Waveforms for ZVS operation of S 7with a balanced 9 kW load at ...Figure 12.47 Waveforms of v cland i Lrunder three‐phase unbalanced load.Figure 12.48 Waveforms for ZVS operation of S i4with an unbalanced load at d...Figure 12.49 Waveforms for ZVS operation of S o2with an unbalanced load at d...Figure 12.50 Waveforms for ZVS operation of S 7with an unbalanced load at di...Figure 12.51 Generation of gate driving signals with short‐circuit signal.Figure 12.52 Waveforms of short‐circuit signal.Figure 12.53 Power device voltage stress at different power levels.Figure 12.54 Efficiency curve at different power levels.

13 AppendixFigure A.1.1 Trace of vector with symmetrical three‐phase voltage.Figure A.1.2 Eight state combinations for three‐phase bridges in three‐phase...Figure A.1.3 Positions of eight basic vectors of three‐phase bridges.Figure A.1.4 Composition of reference voltage vector in sector 1. Figure A.2.1 Twelve switching patterns of SVM 12: (a) sector 1‐1, (b) sector... Figure A.3.1 Twelve switching patterns of ZVS‐SVM: (a) sector 1‐1, (b) secto...Figure A.4.1 Topology of hard‐switching three‐phase grid inverter.Figure A.4.2 Driving sequence of SVM 12 in sector 1‐1 within one switching p...Figure A.4.3 Conduction time of phase A’s main switches S 1and S 4in one lin...Figure A.4.4 Typical EE cores with dimensions.Figure A.4.5 Driving sequence of ZVS‐SVM in sector 1‐1 within one switching ...Figure A.4.6 Key waveforms in sector 1‐1.Figure A.5.1 Topology of soft‐switching three‐phase grid inverter.Figure A.5.2 Relationship between voltage v A0and grid voltage v awithin 1/4...Figure A.5.3 Waveforms derivation of AC filter inductor current ripple with ...Figure A.5.4 ∆ i a ×L within the first 1/4 line cycle.Figure A.6.1 Definitions of DC‐side currents.Figure A.6.2 Waveforms of resonant inductor i Lrand DC bus current i dcin on...Figure A.6.3 Waveforms of i a, − i c, and DC input current I inwithin sector 1‐...Figure A.6.4 Waveforms of time‐domain DC bus current i dc, DC filter capacito...

1 Books in the IEEE Press Series on Power and Energy Systems

2 Cover Page

3 Series Page IEEE Press 445 Hoes Lane Piscataway, NJ 08854 IEEE Press Editorial Board Ekram Hossain, Editor in Chief Jón Atli Benediktsson Xiaoou Li Jeffrey Reed Anjan Bose Lian Yong Diomidis Spinellis David Alan Grier Andreas Molisch Sarah Spurgeon Elya B. Joffe Saeid Nahavandi Ahmet Murat Tekalp

4 Title Page

5 Copyright Page

6 Preface

7 Nomenclature

8 Table of Contents

9 Begin Reading

10 Appendix

11 Index

12 Wiley End User License Agreement

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