| 摘要 |
<p>PROBLEM TO BE SOLVED: To reduce the DC current flowing in a field winding of a hybrid excitation synchronous motor even when the current flowing period of a semiconductor element of a chopper device is increased. SOLUTION: In a synchronous generator (HSY-G) 100 and a synchronous motor (HSY-M) 108, the field control can be performed by controlling the DC current value flowing in field windings 100a, 108a by chopper devices 102, 107. The AC current from HSY-G 100 to be driven by an engine 101 is rectified by a main rectifier 103 to be the DC current, and an inverter device 105 feed the three-phase AC current to the HSY-M 108 through the DC/AC conversion. A rectifier for a field current power supply receives the voltage from a center tap of the HSY-G 100, and the DC side voltage Vdc2 is dropped. Because the DC side voltage Vdc2 whose voltage value is small is fed to the chopper devices 102, 107, the energizing time of a semiconductor element of the chopper device 102, 107 can be increased.</p> |
