Arrangements for controlling electric generators for the purpose of obtaining a desired output

HELECTRICITY H02Electric power H02PCONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS

H02P9/00Arrangements for controlling electric generators for the purpose of obtaining a desired output

H02P9/006Means for protecting the generator by using control H02P9/007Control circuits for doubly fed generators H02P9/008wherein the generator is controlled by the requirements of the prime mover H02P9/009Circuit arrangements for detecting rotor position H02P9/02Details H02P9/04Control effected upon non-electric prime mover and dependent upon electric output value of the generator H02P9/06Control effected upon clutch or other mechanical power transmission means and dependent upon electric output value of the generator H02P9/08Control of generator circuit during starting or stopping of driving means H02P9/10Control effected upon generator excitation circuit to reduce harmful effects of overloads or transients H02P9/102for limiting effects of transients H02P9/105for increasing the stability H02P9/107for limiting effects of overloads H02P9/12for demagnetising for reducing effects of remanence for preventing pole reversal H02P9/123for demagnetising; for reducing effects of remanence H02P9/126for preventing pole reversal H02P9/14by variation of field H02P9/16due to variation of ohmic resistance in field circuit, using resistances switched in or out of circuit step by step H02P9/18the switching being caused by a servomotor, measuring instrument, or relay H02P9/20due to variation of continuously-variable ohmic resistance H02P9/22comprising carbon pile resistance H02P9/24due to variation of make-to-break ratio of intermittently-operating contacts H02P9/26using discharge tubes or semiconductor devices H02P9/28using discharge tubes H02P9/30using semiconductor devices H02P9/302Brushless excitation H02P9/305controlling voltage H02P9/307more than one voltage output H02P9/32using magnetic devices with controllable degree of saturation H02P9/34using magnetic devices with controllable degree of saturation in combination with controlled discharge tube or controlled semiconductor device H02P9/36using armature-reaction-excited machines H02P9/38Self-excitation by current derived from rectification of both output voltage and output current of generator H02P9/40by variation of reluctance of magnetic circuit of generator H02P9/42to obtain desired frequency without varying speed of the generator H02P9/44Control of frequency and voltage in predetermined relation H02P9/46Control of asynchronous generator by variation of capacitor H02P9/48Arrangements for obtaining a constant output value at varying speed of the generator