22C-D208A103
22C-D208A103
22C-D208A103
转子电路串频敏变阻器起动控制
转子电路串电阻起动时,由于在起动过程中逐级切除电阻,因此电流及转矩的突然变化存在机械冲击,并且其控制电路较复杂,起动电阻体积较大,能耗大,维修麻烦,在实际生产中常采用其他起动方式。
但是,串电阻起动具有起动转矩大的优点,对有低速运行要求,且初始起动转矩大的传动装置仍是一种常用的起动方式。
绕线转子异步电动机起动的另一方法是转子电路串频敏变阻器起动,这种起动方法具有恒转矩的起、制动特性,又是静止的、无触点的电子元件,很少需要维修。
所以,常用于绕线转子异步电动机的起动,在大容量绕
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线转子异步电动机的起动控制中应用较广。
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