发明名称 Controlling switching of thyristors to reduce power loss in variable speed motor
摘要 Systems and/or methods that facilitate efficiently controlling speed of an induction motor (106) are presented. An optimized control component (102) controls respective switching of an auxiliary switch component (204) associated with an auxiliary winding (208) of the motor (106), a main switch component (202) associated with a main winding (210) of the motor (106), and a capacitance adjuster switch component (252) that facilitates adjusting the amount of capacitance associated with the auxiliary winding (208). The timing of switching on the auxiliary switch component (204) and main switch component (202) can be controlled such that there can be a time difference between the respective switching on of the auxiliary switch component (204) and main switch component (202) to produce additional phase shift to facilitate improving motor efficiency. The capacitance adjuster switch component (252) can be switched on when motor speed is below a predetermined low speed threshold to facilitate increasing the amount of capacitance associated with the auxiliary winding (208) to improve motor efficiency.
申请公布号 EP2101405(A3) 申请公布日期 2013.04.24
申请号 EP20090002818 申请日期 2009.02.27
申请人 JOHNSON CONTROLS TECHNOLOGY COMPANY 发明人 HECKENBACH, TERRY
分类号 H02P25/04;H02P1/44 主分类号 H02P25/04
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