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//SYS21/F:/PEC/REVISES_10-11-01/075065126-INDEX.3D ± 443 ± [439±444/6] 17.11.2001 10:35AM
Index 443
Transmission line, 1, 2, 3, 4, 8, 11, 19, 20, 106, Voltage regulation, 11, 16, 32, 107, 108, 111,
108, 109, 122, 124, 239, 264, 277, 281, 113, 121, 134
283, 286, 287, 288, 289 Voltage regulator control block, 302
Turn-off loss, 161, 171 Voltage sags, 1, 26, 112, 253
Turn-on loss, 161, 171 Voltage-source converter, 2±4, 16, 112, 115,
135, 149, 178, 197±229, 235, 249, 264
Unbalance load, 253 cascaded converter, 220
Uncontrolled semiconductor flying capacitor, 218±219
device, 153 multilevel, 215, 252
Unified Power Flow Controller (UPFC), 4, neutral point clamped (NPC), 210
11, 24, 113, 115, 143, 144, 145, 146, single-phase full-bridge, 212
147, 148, 149, 150, 152, 261, 264 three-phase, 222
Uninterruptible power supply (UPS), single-phase full-bridge, 201±206
229±232, 234 single-phase half-bridge, 197±200
multimodule based, 231 three-phase six-step, 206±210
Voltage control, 239 Wind farm, 251
Voltage flicker, 177
Voltage profile, 94, 107, 136, 147, 151 Zero-crossing control block, 315
