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CONTROL APPARATUS FOR GRID CONNECTED TYPE SINGLE STAGE FORWARD-FLYBACK INVERTER
CONTROL APPARATUS FOR GRID CONNECTED TYPE SINGLE STAGE FORWARD-FLYBACK INVERTER
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机译：并网型单级正激反激变换器的控制装置
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摘要
The present invention relates to a technology capable of adjusting output power by simultaneously applying a current discontinuous mode and a current continuous mode to a grid-connected single stage flyback inverter and reducing a superharmonic distortion rate. A control device of the present invention comprises a control unit for tracking a grid voltage sensed from a system power source of a single stage flyback inverter unit to synchronize a current of a flyback converter unit and a voltage of the grid power source to have the same phase, and calculating a duty ratio of a pulse width modulation signal for switching switching elements of a single stage flyback converter unit on the basis of the summing result of a feedback current proportional to an error current which is a difference value between a synchronized output current and a reference output current and a running current updated while performing down-sampling and up-sampling on one cycle of error values.
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