Page 448 - Power Electronics Handbook

Index 437

Priming current, 247 Regeneration, 138, 180, 290, 337, 378. 404
Printed circuit board, 103 Regenerative
Programmable UJT, 78 action, 17
Propagation path, 99 braking, 378
Proportional chopper, 263
band, 174 gate, 47, 427
control, 173 source, 48
Prospective fault current, 132 Regulation, 85, 219, 405
Protection, 121 Relaxation oscillator, 78, 292
circuit, 152 Reluctance motor, 391
fuses, 20 Repetitive peak voltage, 43
overcument, 128 Reset choke, 268
Pull-in toque, 392 Resistor-starting circuit, 294
Pull-out torque, 392 Resonance, 247. 410
Pulse losses. 265
duration, 75, 86 Return backswing. 86
firing. 58, 63 Reverse
number, 178,426 bias, 20.61
train, 66.75 bias time, 246
transformer, 85 gate power, 63
triggering, 137 junction, 14
width modulation, 296, 3 17, 399, 427 leakage current, 20
Pumping action, 219 power dissipation, 20
Pu~h-p~ll recovery, 127
converter, 178. 180, 427 recovery current, 42. 245
cycloconverter. 228 recovery time, 21.46, 427
cycloinverter, 239 Reversible drive, 374
inverter, 284.286.296, 334, 347 Reversing
PUT, 78,427 chopper. 263
contactors, 377
Q-factor. 196 RF, 99, 263, 350.427
Quadrac, 80 Rhombic simulator, 11 8
Quadrature Ring type eyeloconverter, 23 I
flux, 392 Ripple, 357
phase current, 188 current, 427
Quasi-square waveform, 310, 324, 399 frequency, 2 I8
Rise time, 46, 86
R-C suppressor, 125 Rotating
Radiated RFI, I16 converter, 222
Radiation, 67 field diode, 402
Radio frequency interference, 99, 154, 170, stator field, 366
263, 350 Rotor, 364
Rap and pedestal control, 167, 283 poles, 366
Ratings, 24
Re-entrant protection, 357 safe operating area, 30. 427
Receptor bandwidth, 100 Safety angle, 202
Recombination, 12, 21, 27, 42, 77 Salient pole. 391
Recovery time, 86 Saturable
Rectification. 12, 178 reactor, 133,163. 252
controlled, 139, 424 transformer, 293
Rectifier, 12 Saturation
characteristics, 20 region, 26, 78
ratings, 18 resistance, 26
Reflection, 106 time, 253
loss, 106 voltage, 26, 41