风力发电机组中低压鼠笼型电动机保护回路的设计

Design of Protection Circuit of Low Voltage Squirrel Cage Motor in Wind Turbine

低压交流鼠笼型电动机结构简单、耐用、可靠、维护方便、价格便宜,散热风机多用在连续运行、不调速、操作不频繁的场合,低压鼠笼电动机大量被使用来拖动此类负载。要使电动机可靠工作,选择一个合适的保护回路是非常重要的。

Low voltage AC squirrel cage motor has the advantages of simple structure,durability,reliability,convenient maintenance and low price,fans are mostly used in occasions with continuous operation,no speed regulation and infrequent operation,and infrequent operation are used,Low voltage squirrel cage motors are widely used to drive such loads.In order to make the motor work reliably,how to select an appropriate protection circuit is very important.Otherwise,it will not only fail to protect,but also cause the motor to fail to work or even burn out.