초록 ▼

An electrically compensated constant speed drive includes a mechanical differential having first and second input shafts and an output shaft wherein a prime mover is coupled to the first input shaft, a brushless generator is coupled to the differential output shaft and includes a control permanent m

An electrically compensated constant speed drive includes a mechanical differential having first and second input shafts and an output shaft wherein a prime mover is coupled to the first input shaft, a brushless generator is coupled to the differential output shaft and includes a control permanent magnet generator (PMG) and a main generator which develops output power and a speed compensation link is coupled between the control PMG and the second differential shaft. The speed compensation link includes a dynamoelectric machine coupled to the second differential input shaft and a power converter which interconnects armature windings of the control PMG and electrical power windings of the dynamoelectric machine. A generator control unit controls the flow of power between the control PMG and the dynamoelectric machine so that the dynamoelectric machine develops compensating speed of a magnitude sufficient to maintain the output shaft of the differential at a desired speed so that the brushless generator develops constant frequency AC power. The present constant speed drive is lighter and smaller than prior electrically compensated constant speed drives.

대표청구항 ▼

An electrically compensated constant speed drive for producing constant frequency AC power from variable speed motive power produced by a prime mover, comprising: a mechanical differential including first and second input shafts and an output shaft wherein the prime mover is coupled to the first inp

An electrically compensated constant speed drive for producing constant frequency AC power from variable speed motive power produced by a prime mover, comprising: a mechanical differential including first and second input shafts and an output shaft wherein the prime mover is coupled to the first input shaft; a brushless generator having a rotor coupled to the output shaft and including a control permanent magnet generator (PMG) and a main generator which develops output power; a dynamoelectric machine having a motive power shaft coupled to the second input shaft of the differential and electrical power windings; a power converter interconnecting the control PMG and the electrical power windings of the dynamoelectric machine; and means coupled to the power converter for controlling the flow of power between the control PMG and the dynamoelectric machine whereby the dynamoelectric machine develops compensating speed of a magnitude sufficient to maintain the output shaft of the differential and the brushless generator rotor at a desired speed so that the brushless generator develops the constant frequency AC power.