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It also includes, Hall element inputs, a sequencer for commutation control, fixed off time pulse width modulation (PWM) current control and locked rotor protection.
它还包括霍尔元件输入、整流控制定序器、固定停机时间脉冲宽度调制(PWM)电流控制以及锁定转子保护。
This has the advantages of simplicity, reliability, high frequency accuracy, strong commutation ability and less strict demand for SCR off-time the paper concludes with a list of the test results.
该变频调速系统具有简单、可靠、频率精度高、换流能力强和对可控硅关断时间要求不高等优点。最后给出了试验结果。
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