在大功率晶体管逆变器——电动机驱动系统中，它不但可用来对电动机电流的波形、相位、幅值和频率进行精细控制，而且能快速地检测出故障电流。
In a drive system of power transistor inverter-motor, not only can it be used in fine control of motor current waveform, phase, amplitude and frequency, but can also be used to sense, fault current.
实验结果证明了该电路能实现三相逆变器开关管的软开关、改善输出波形质量。
The experimental results verify that the circuit mentioned above can realize the soft-switching, improve the quality of output wave.
本文所设计的正弦信号发生器主要由DDS波形产生模块、单片机控制模块、键盘输入模块和数码管显示模块组成。
This system consists of DDS signal generator module, MCU control module, keyboard input module and nixie tube display module.
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