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