| 摘要 |
A highly accurate control is achieved in such a way that a timing value is generated from a differential control amount calculation result and a filter calculation result at iteration intervals not exceeding the iteration intervals of the filter calculation and then the timing set value of a driving signal generation circuit is updated by this timing value. A device for controlling a power conversion circuit comprises an AD conversion circuit (22), a driving timing value generation circuit (23), and a driving signal generation circuit (24). The driving timing value generation circuit (23) includes a control amount calculation circuit (231) and a digital-digital addition circuit (232). The control amount calculation circuit (231) includes a first calculation unit (2311) for performing a differential control amount calculation and a second calculation unit (2312) for performing a filter calculation. The digital-digital addition circuit (232) adds a control amount generated by the second calculation unit (2312) and a control amount generated by the first calculation unit (2311) at iteration intervals exceeding the calculation iteration intervals in the first calculation unit (2311) but not exceeding the calculation iteration intervals in the second calculation unit (2312), and generates a driving timing value for a switch of a power conversion circuit. The driving signal generation circuit (24) receives the driving timing value and generates, according to the driving timing value, a driving signal for the switch (11) of the power conversion circuit (1). |
