| 摘要 |
<p>PURPOSE:To diminish the current capacity of a cyclo-converter, by adding bias to a control reference value when the output current of the cyclo-converter of each phase exceeds a previously set set-value during a previously set time. CONSTITUTION:The primary winding of a generator-motor 1 is connected to a power apparatus, and to a secondary winding, three-phase AC exciting current is fed via a transformer 4 and a cyclo-converter 3. The input of the terminal voltage signal of the primary winding of the generator-motor 1, current signal, the current signal of the secondary winding, and the phase signal of a rotor, to a controller 5 is provided, and according to the control reference value of terminal voltage, the control reference value of reactive power, the control reference value of active power, and the control reference value of a rotor speed, the cyclo-converter 3 is controlled. In this case, when the output current of the cyclo-converter 3 exceeds a set value during a set time, then bias is added to the control reference values, and a controlled quantity is changed, and the current of the cyclo-converter 3 is reduced.</p> |
