公开(公告)号：WO1993026082A1

公开(公告)日：1993-12-23

申请号：PCT/US1993005638

申请日：1993-06-11

Applicant: GENERAC CORPORATION

Inventor： GENERAC CORPORATION ,  KERN, Robert ,  RUEHLOW, Gerald ,  MCLEAN, Graham ,  WHEELEY, Michael ,  WEDEL, Frank ,  KASTNER, Mark

IPC: H02P09/14

CPC classification number: H02P9/04 ,  F02B63/04 ,  F02B63/042

Abstract: An engine-driven generator (10) includes an internal combustion engine (12), a permanent magnet alternator (14) and an AC to AC converter (16). The output frequency and voltage of the permanent magnet alternator (14) are largely dependent on engine speed and the alternator load (26). The AC to AC converter (16) converts the speed-dependent alternating current developed by the alternator (14) to another alternating current whose frequency and voltage are largely independent of engine speed. Voltage regulation is provided by varying the engine speed in accordance with the load current. Frequency regulation is provided by frequency dividing the alternator output by an integer divisor that varies in accordance with engine speed. Additional voltage regulation is provided by deleting selected cycles of the alternator output current as needed to maintain the RMS output voltage within predetermined limits.

Abstract translation: 发动机驱动的发电机（10）包括内燃机（12），永磁式交流发电机（14）和AC至AC转换器（16）。 永磁式交流发电机（14）的输出频率和电压在很大程度上取决于发动机转速和交流发电机负载（26）。 AC到AC转换器（16）将由交流发电机（14）产生的与速度相关的交流电转换成其频率和电压很大程度上与发动机转速无关的另一交流电。 通过根据负载电流改变发动机转速来提供电压调节。 通过将交流发电机输出分频除以发动机转速变化的整数除数来提供频率调节。 通过根据需要删除交流发电机输出电流的选定周期来提供额外的电压调节，以将RMS输出电压维持在预定限度内。