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Integrated DC link choke and method for suppressing common-mode voltage in a motor drive
Integrated DC link choke and method for suppressing common-mode voltage in a motor drive
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机译:集成直流母线扼流圈和抑制电机驱动器中共模电压的方法
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摘要
A motor drive and a choke therefor are disclosed, wherein the choke comprises a magnetic core with an inner leg and two outer legs, and four coils, which may be connected in DC current paths in the motor drive. First and second differential coils are wound around first and second outer legs, respectively; and first and second common-mode coils are wound around the inner leg of the choke. The first and second differential coils smooth the DC current on a DC bus in the motor drive, and the first and second common-mode coils suppress common-mode voltages in the motor drive. Also disclosed is a method for suppressing common-mode voltages in a motor drive.
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