| 摘要 |
The main feature of the present invention is to perform sub-exciter control on the series type excitation magnetic field winding of the DC series type excitation or compound dynamo (including generator and motor), especially to increase the magnetic field by means of the sub-exciter control on low voltage or light load operation, and it will be normal excitation on full load to cause the light load and full load to be saturated excitation or nearly saturated excitation under various voltage in order to improve the efficiency. <IMAGE> |
