Power Electronics and Ac Drives |
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Page 113
... Output voltage to firing angle relation of cycloconverter . From Thyristor Phase - Controlled Converters and ... output voltage is positive , say for example , the voltage ratio K = +0.5 , the positive converter operates as a rectifier ...
... Output voltage to firing angle relation of cycloconverter . From Thyristor Phase - Controlled Converters and ... output voltage is positive , say for example , the voltage ratio K = +0.5 , the positive converter operates as a rectifier ...
Page 114
... output voltage magnitude is double , or for the same output voltage demand the supply voltage is half that of an 18 - thyristor circuit . This means that the thyristor voltage rating is half that of the 18 - thyristor circuit . Since ...
... output voltage magnitude is double , or for the same output voltage demand the supply voltage is half that of an 18 - thyristor circuit . This means that the thyristor voltage rating is half that of the 18 - thyristor circuit . Since ...
Page 152
... output voltage can be controlled by adjusting the phase - shift angle between the bridges . For example , in the dual - bridge inverter shown in Fig . 4.4 ( a ) , the output fundamental voltage can be controlled if the lower bridge ...
... output voltage can be controlled by adjusting the phase - shift angle between the bridges . For example , in the dual - bridge inverter shown in Fig . 4.4 ( a ) , the output fundamental voltage can be controlled if the lower bridge ...
Common terms and phrases
ac machine air gap flux block diagram bridge converter byte capacitor characteristics component conduction constant control loop copper loss counter emf current control current waves current-fed inverter curves cycloconverter dc link dc voltage device diode discussed drive system equivalent circuit feedback Figure firing angle frequency fundamental fundamental frequency gate induction motor input Intel Corporation leakage inductance line current line voltage load voltage method microcomputer mode modulation MOSFET negative operation output voltage parameters phase current phase voltage phase-controlled phasor phasor diagram power factor pulse Q₁ R₁ rectifier resistance rotor current safe operating area shown in Fig signals slip power snubber speed control stator current steady-state supply voltage switching synchronous machine synchronously rotating t₁ T₂ three-phase thyristor torque transfer function transformer transistor turn-off V₁ variable vector control voltage voltage and current voltage wave voltage-fed inverter waveforms zero