2 Chapter 2Figure 2.1 Three‐phase converters: (a) grid converters; (b) inverters to sup...Figure 2.2 Control of three‐phase converter.Figure 2.3 PWM signal generation.Figure 2.4 Switch leg of phase‐a.Figure 2.5 Key waveforms of phase‐a switch leg in a switching cycle.Figure 2.6 Commutation from upper switch S1 to the antiparallel diode D4 of ...Figure 2.7 Turn‐off transient waveforms of an IGBT device (1.7 kV/400 A modu...Figure 2.8 Commutation from lower diode D4 to upper switch S1.Figure 2.9 Key waveforms of phase‐a switch leg in a switching cycle with con...Figure 2.10 Turn‐on transient waveforms of an IGBT device (1.7 kV/400 A modu...Figure 2.11 Turn‐on waveforms: (a) Si IGBT device; (b) hybrid IGBT device. T...Figure 2.12 Effect of stray inductance: (a) a switch leg circuit; (b) second...Figure 2.13 Turn‐off waveforms of a SiC MOSFET with device rating: 1.2 kV/80...Figure 2.14 DC‐side common‐mode voltage envelopes comparison of Si IGBT inve...Figure 2.15 Dissipative snubber circuit for power semiconductor devices.Figure 2.16 Classification of three‐phase soft‐switching converters.Figure 2.17 Configuration of DC‐side resonance converters.Figure 2.18 Circuit of RDCL converter.Figure 2.19 Simplified circuit of RDCL converter.Figure 2.20 Waveforms of resonant tank voltage and current: (a) IL0 > I0; (b...Figure 2.21 Generation of output waveforms of RDCL.Figure 2.22 Circuit of active‐clamped resonant DC‐link (ACRDCL) inverter....Figure 2.23 Boost converter and Type 2 commutation.Figure 2.24 Compound active‐clamping (CAC) boost converter: (a) circuit; (b)...Figure 2.25 Equivalent circuit for stage analysis.Figure 2.26 Circuit states at various stages: (a) Stage 1 (t0−t1); (b) Stage...Figure 2.27 Steady‐state waveforms of the converter.Figure 2.28 Minimum‐voltage active‐clamping (MVAC) boost converter.Figure 2.29 Active‐clamping buck converters: (a) CAC buck converter; (b) MVA...Figure 2.30 Active‐clamping synchronous buck converters.Figure 2.31 Active‐clamping three‐phase converter: (a) CAC three‐phase conve...Figure 2.32 Configuration of AC‐side resonance converters.Figure 2.33 Auxiliary resonant commutated pole (ARCP) converter.Figure 2.34 Commutation waveforms (from diode to switch) of ARCP converter....Figure 2.35 Equivalent circuits during commutation stages of ARCP converter....Figure 2.36 Commutation from upper switch S1 to the lower switch’s diode D4:...Figure 2.37 Coupled‐inductor ZVT inverter.Figure 2.38 Commutation waveforms (from diode to switch) of ZVT converter.Figure 2.39 Different stages of the commutation in ZVT converter. (a) Before...Figure 2.40 Disenable the auxiliary diodes’ freewheeling with saturable indu...Figure 2.41 Six‐switch ZCT inverter.Figure 2.42 Inverter with TCM and its waveforms: (a) three‐phase four‐wire i...Figure 2.43 Phase‐a circuit and key waveforms in a switching cycle: (a) the ...Figure 2.44 Equivalent circuits of various stages in one switching cycle. (a...
3 Chapter 3Figure 3.1 Soft‐switching converter: (a) with DC‐side resonance; (b) with AC...Figure 3.2 SPWM: (a) modulation signals and carrier; (b) PWM waveform in a s...Figure 3.3 Two types of switching commutations of phase‐a switch leg: (a) Ty...Figure 3.4 Phase current polarity vs. Type 2 commutation edge: (a) filter cu...Figure 3.5 Phase current polarity vs. Type 2 commutation edge with non‐unit ...Figure 3.6 PWM scheme vs. EA‐PWM scheme: (a) three‐phase filter currents; (b...Figure 3.7 Active‐clamping ZVS three‐phase converter.Figure 3.8 Active‐clamping three‐phase converter with CAC auxiliary circuit....Figure 3.9 Modulation signals and filter current waveforms.Figure 3.10 Typical waveforms in a switching period.Figure 3.11 Initial state before time t0.Figure 3.12 Stage 1[t0, t1].Figure 3.13 Stage 2[t1, t2]: first resonance.Figure 3.14 Stage 3[t2, t3]: resonant inductor discharging duration 1.Figure 3.15 Stage 4[t3, t4]: resonant inductor discharging duration 2.Figure 3.16 Stage 5[t4, t5]: current boost stage with three leg short‐circui...Figure 3.17 Stage 6[t5, t6]: second resonance.Figure 3.18 Stage 7[t6, t7]: PWM duration with state
