| 摘要 |
<p>A bidirectional converter topology uses one and the same circuit to realize mutual conversion of a direct current and an alternating current without common mode interference, the cathode and anode of the direct current side being respectively connected in series to a switch tube (S5, S6), and an inductor (L1, L2) being respectively connected after the switch tubes. A voltage boost-freewheeling circuit is connected between the joints of the two inductors and the two switch tubes, the other sides of the two inductors are connected to an H bridge (S1, S2, S3, S4), and the midpoints of the two bridge arms of the H bridge are directly connected to a capacitor (C3) and serve as an alternating current input or output end. The bidirectional converter topology structure realizes direct bidirectional flow of a direct current and an alternating current, and realizes a bidirectional converter with low cost and no transformer, and can be applied to energy storage, an alternating-direct current hybrid system, reactive power regulation, and motor driving and braking.</p> |
