| 摘要 |
A half-bridge circuit for induction heating and an induction cooker system. The half-bridge circuit comprises a switch series circuit consisting of a first power switch (S1) and a second power switch (S2), a first capacitor (C0) connected to the switch series circuit in parallel, a first absorption capacitor (C3) connected to the first power switch in parallel, a second absorption capacitor (C4) connected to the second power switch in parallel, a capacitor series circuit consisting of a first resonant capacitor (C1) and a second resonant capacitor (C2) and connected to two ends of the switch series circuit in parallel, an inductor (L1) connected between a connection node of the first resonant capacitor and the second resonant capacitor and a connection node of the first power switch and the second power switch, and unidirectional conduction devices (D1, SCR1) connected to the first resonant capacitor or the second resonant capacitor in parallel and used for preventing the resonant capacitor from being reversely charged. The half-bridge circuit allows the two power switches to be maintained at a zero-voltage switch state under a large-scale asymmetric working condition, so as to reduce the switch loss and improve the reliability of the half-bridge circuit. |
