三相交流电电流、电压、频率转换器的设计

摘要

在三相交流电路中，往往需要检测三相相电流、线电流和频率的变化，监控线路电压的波动，控制升温、降温、振动大小等，另外，还需要经常了解三相负载的本身工作正常与否，从而做到实时调整。文章设计了一种实用的电压/电流（V/I）、电流/电流（I/I）和频率/电流（F/I）转换器，将传感器测量的电压、电流和频率信号转换为电流信号以适应远距离检测的需要，实验结果表明三种转换电路均能满足设计指标。%In the three-phase alternating current,it is always necessary to detect the changes of three phase current linear current and frequency、monitor the volatility of line voltage and controll the temperature rise and fall、the speed of evaporation and the scale of vibrating etc.On the other hand ,we should constantly know that whether the three phase load itself is working normally ,so that we can modulate it timely.Having designed a kind of V/I 、I/I 、F/I converters,we can cater to the need of distant detec-tion.The experimentation has improved ,the three transfer circuits all content to the indexes of design.