Power semiconductor circuits
Detailed explanations suitable for self-instruction are given for the design and operation of a large variety of power supplies and converters. Provides a sound basis of theoretical knowledge while stressing practical methods, allowing the reader to apply the ideas in the text to all types of circuits. Discusses transient circuit analysis, Fourier analysis, electric machine theory, and elementary control system theory, and goes on to discuss various types of systems and their physical appearance, circuits including thyristors and the method of rating and classifying them. Individual classes of converter are examined in succeeding chapters. Numerical examples based on practical experience are included.
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TWO CIRCUITS WITH SWITCHES AND DIODES
THREE POWER SEMICONDUCTOR SWITCHES
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ac source angle of retard available for turn-off bridge inverter Calculate capacitor voltage chopper circuit circuit of Fig circuit shown commutation circuit commutation interval constant controlled rectifier converter current waveform curves delay angle determined diagram diode employed energy equivalent circuit function gate current gating signals half cycle illustrated in Fig induction motor inductor input instant inverter of Fig leakage inductance line current line-to-line load circuit load current negative obtained operation parameters peak power delivered power factor pulse quadrant rad/s rectified current reduced regenerative braking ringing circuit RLC circuit rms output current rms thyristor current rms value secondary winding Section series inverter shown in Fig sinusoidal Sketch to scale source voltage speed steady-state SW is closed switch SW terminals three-phase thyristor Ql thyristor voltage torque transformer type A chopper vAKl variations versus voltage applied voltage controller voltage source voltage waveforms waveform