| 摘要 |
A switched capacitor, induction motor drive circuit wherein a switched capacitor (54, 56, 58) in parallel with the induction motor load at each output terminal (70, 72, 74) is provided for commutation or switching of the main output inverter elements (S-1 to S-6) thereby protecting the switching elements from excessive voltage during switching or commutation operation in combination with a unique switching control circuit (G-1 to G-6) which enables minimal voltage switching elements to be used and which eliminates the need for anti-parallel rectifiers in the inverter output stage. Alternate forms of the switching control circuit are disclosed. Regeneration induced power control circuits for dissipating or returning the power to the input lines are dislosed. |
