| 摘要 |
A DC/AC converter is disclosed which has an inverter (10) coupled to a load (13) via a transformer (11). A control signal generator (25) causes the inverter to switch according to a predetermined procedure, and a feedback loop (15-25) is responsive to at least one state quantity (vc,ic) of the circuit to act on the control signal generator (25) and modify the state quantities (vc,ic) so as to ensure a predetermined stable pattern for the output AC voltage (vc). To prevent the transformer (11) from becoming saturated, a circuit device is provided which includes correcting means (30-32,33-35) effective to sense in the inverter (10) output voltage (u) an unbalance causing the appearance of a DC component at the primary of the transformer (11) and to apply a correction signal to the control signal generator (25) for so modifying the switch signals as to cancel the unbalance. <IMAGE> |
