公开(公告)号：US3970914A

公开(公告)日：1976-07-20

申请号：US561279

申请日：1975-03-24

申请人： Theodor Salzmann ,  Franz Wesselak ,  Wolfgang Timpe

发明人： Theodor Salzmann ,  Franz Wesselak ,  Wolfgang Timpe

IPC分类号： H02M5/27 ,  H02M5/45

CPC分类号： H02M5/271

摘要： A circuit arrangement is disclosed comprising three direct converters which are fed from an a.c. voltage network. The converters are arranged in a Y configuration and are connected to a three-phase load. To increase the transmitted power and to vary the reactive power requirement, the circuit arrangement is provided with means for generating a control voltage for the control unit of at least one of the three converters such that the output voltage of this converter has a periodic waveform which includes essentially no fifth and seventh order harmonics. Additionally, the load-side conductor currents of the three converters are controlled with control signals having sinusoidal waveforms. A particular form used for the control voltage is a trapezoidal waveform.

摘要翻译： 公开了一种电路装置，其包括三个直接转换器，它们从一个交流电 电压网络。 这些转换器被配置为Y配置并连接到三相负载。 为了增加发射功率并改变无功功率需求，电路装置设置有用于产生用于三个转换器中的至少一个的控制单元的控制电压的装置，使得该转换器的输出电压具有周期性波形， 基本上不包括第五和第七阶谐波。 此外，三个转换器的负载侧导体电流由具有正弦波形的控制信号控制。 用于控制电压的特定形式是梯形波形。