Bridge inverters and the control thereof

摘要: A method and apparatus are provided for controlling the switching devices in a switched reluctance machine bridge inverter having at least two (35,38) per phase. One device (35) is used hysteresis band current chopping to regulate phase magnitude, while other (38), combination with flyback diode (47) provides circulating path current. Alternatively, alternated between both during each conduction interval of corresponding Ripple decreased, thereby reducing required size DC link capacitor. Switching losses also reduced.