Download
1 / 75
830 likes | 1.12k Views
Chapter 7 DC-to-AC Converters. “Introduction to Modern Power Electronics”, 2 nd Ed., John Wiley 2010 by Andrzej M. Trzynadlowski. Voltage-source inverter supplied form a diode rectifier. Fig. 7.1. Single-phase voltage-source inverter. Fig. 7.2. Circuit diagram of a Z-source. Fig. 7.3.
E N D
Chapter 7DC-to-AC Converters “Introduction to Modern Power Electronics”, 2nd Ed., John Wiley 2010 by Andrzej M. Trzynadlowski
Voltage-source inverter supplied form a diode rectifier Fig. 7.1 Chapter 7
Single-phase voltage-source inverter Fig. 7.2 Chapter 7
Circuit diagram of a Z-source Fig. 7.3 Chapter 7
States, switching variables, and waveforms of output voltage and current in a single-phase VSI in the basic square-wave mode Fig. 7.4 Chapter 7
States, switching variables, and waveforms of output voltage and current in a single-phase VSI in the optimal square-wave mode Fig. 7.5 Chapter 7
Waveforms of output voltage and current in a single-phase VSI in the PWM mode, N = 10: (a) m = 1, (b) m = 0.5 Fig. 7.6 Chapter 7
Waveforms of output voltage and current in a single-phase VSI in the PWM mode, N = 20: (a) m = 1, (b) m = 0.5 Fig. 7.7 Chapter 7
Harmonic spectra of output voltage in a single-phase VSI: (a) basic square-wave mode, (b) optimal square-wave mode Fig. 7.8 Chapter 7
Harmonic spectra of output voltage in a single-phase VSI in the PWM mode (m = 1): (a) N = 10, (b) N = 20 Fig. 7.9 Chapter 7
Harmonic spectra of output current in a single-phase VSI: (a) basic square-wave mode, (b) optimal square-wave mode Fig. 7.10 Chapter 7
Harmonic spectra of output current in a single-phase VS in the PWM mode (m = 1): (a) N = 10, (b) N = 20 Fig. 7.11 Chapter 7
Waveforms of input current in a single-phase VSI: (a) optimal square-wave mode, (b) PWM mode (m = 1, N = 20) Fig. 7.12 Chapter 7
Harmonic spectra of input current in a single phase VSI: (a) optimal square-wave mode, (b) PWM mode (m = 1, N = 20) Fig. 7.13 Chapter 7
Three-phase voltage-source inverter Fig. 7.14 Chapter 7
Switching variables and waveforms of output voltages in a three-phase VSI in the square-wave mode Fig. 7.15 Chapter 7
Waveforms of output voltage (line-to-neutral) and current in a three-phase VSI in the square-wave mode (RL load) Fig. 7.16 Chapter 7
Waveforms of input current in a three-phase VSI in the square-wave mode (RL load) Fig. 7.17 Chapter 7
Switching variables and waveforms of output voltages in a three--phase VSI in the PWM mode Fig. 7.18 Chapter 7
Waveforms of the output voltage and current in an RL load of a three-phase VSI in the PWM mode (a) load angle of , (b) load angle of Fig. 7.19 Chapter 7
Waveforms of input current in a three-phase VSI in the PWM mode (a) load angle of , (b) load angle of Fig. 7.20 Chapter 7
Carrier-comparison PWM technique (N = 12, m = 0.75) Fig. 7.21 Chapter 7
Third-harmonic modulating function and its components at m = 1 Fig. 7.22 Chapter 7
Voltage space vector plane of a three-phase VSI (per-unit) Fig. 7.23 Chapter 7
High-quality space sequence Fig. 7.24 Chapter 7
High-efficiency space sequence Fig. 7.25 Chapter 7
Switching pattern with half- and quarter-wave symmetries Fig. 7.26 Chapter 7
Optimal primary switching angles as functions of the magnitude control ratio (K = 5) Fig. 7.27 Chapter 7
Harmonic spectrum of line-to-neutral voltage with the harmonic-elimination technique (K = 5, M = 1) Fig. 7.28 Chapter 7
Switching patterns and output voltage and current waveforms; (1) carrier-comparison PWM with sinusoidal reference, (2) space vector PWM with high-efficiency state sequence, (3) programmed PWM with harmonic elimination Fig. 7.29 Chapter 7
Waveforms of output current in a three-phase VSI: (a) regular PWM, (b) random PWM Fig. 7.30 Chapter 7
Frequency spectra of the line-to-neutral output voltage in a three-phase VSI: (a) regular PWM, (b) random PWM Fig. 7.31 Chapter 7
Comparison of random PWMtechniques with the regular PWM Fig. 7.32 Chapter 7
Hysteresis current control scheme Fig. 7.33 Chapter 7
Characteristic of the hysteresis current controller Fig. 7.34 Chapter 7
Waveforms of output currents in a VSI with hysteresis current control: (a) 20% tolerance, (b) 10% tolerance Fig. 7.35 Chapter 7
Waveform of output currents in a VSI with hysteresis current control at a rapid change in the magnitude, frequency, and phase of the reference current Fig. 7.36 Chapter 7
Space vector version of the hysteresis current control scheme Fig. 7.37 Chapter 7
Characteristic of a current controller for the space vector version of the hysteresis current control scheme Fig. 7.38 Chapter 7
Characteristic of a current controller for the space vector version of the hysteresis current control scheme Fig. 7.39 Chapter 7
Waveforms of the output current in a VSI with the ramp comparison current control: (a)(b) Fig. 7.40 Chapter 7
Current-regulated delta modulation scheme for a current-controlled VSI Fig. 7.41 Chapter 7
Linear current control scheme for a VSI Fig. 7.42 Chapter 7
Current-source inverter supplied from a controlled rectifier Fig. 7.43 Chapter 7
Three-phase current-source inverter Fig. 7.44 Chapter 7
Switching variables in a three-phase CSI in the square-wave mode Fig. 7.45 Chapter 7
Idealized waveforms of output currents in a three-phase CSI in the square-wave mode Fig. 7.46 Chapter 7
Waveforms of output voltage and current in a three-phase CSI in the square-wave mode: (a) RL load, (b) LE load Fig. 7.47 Chapter 7
Three-phase PWM current-source inverter Fig. 7.48 Chapter 7
