Power factor correction circuit

Abstract

The invention relates to an electrical device (1) comprising: - An input interface (T1) for connection to an AC voltage source, - An output interface (T2) for connection to an electrical energy storage unit, - A totem-pole mounted power factor correction circuit (10) comprising at least one high-frequency power switching half-bridge (11) and one low-frequency power switching half-bridge (12), each half-bridge comprising at least two switches (S1, S2, D3, D4), the high-frequency power switching half-bridge (11) further comprising an inductor (L1), - A control system (20) for said power factor correction circuit (10), arranged to generate the control signals (P1, P2) for the switches of at least one high-frequency power switching half-bridge (11), characterized in that the control system (20) comprises at least one positive branch (30),arranged to generate a first set of duty cycle values ​​(α+) for the drive signals (P1, P2) from the positive half-cycle of the AC input voltage of the device, and a negative branch arranged to generate a second set of duty cycle values ​​(α-) for the drive signals (P1, P2) from the negative half-cycle of the AC input voltage of the device. Abbreviated figure: Fig. 1,

Claims

with the set of cyclic ratios (a) at the output of the selection module (25).

10. - On-board charger of an electrical energy storage unit comprising an electrical device (1) according to one of the preceding claims. [Fig. 1] [Fig. 3a] [Fig. 3b]

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