| 摘要 |
1,055,706. Rectifying; synchronous machines. ELIN-UNION FUR ELEKTRISCHE INDUSTRIE A.G. March 23, 1965 [March 26, 1964], No. 12250/65. Headings H2A and H2F. Controlled rectifiers 7 to 12 supply direct current in one direction or the other to a load from the secondary windings of a polyphase current transformer which is constructed with a phase winding on each leg of its core. The load may be the field winding of a synchronous machine, in which case the circuit provides rapid and precise control especially in a compounded excitation arrangement where rapid demagnetization can be obtained. |
