| 摘要 |
<p>A circuit for converting DC voltage to AC voltage comprises an inverter (2) and a DC power supply (1) comprising a solar energy generator (SG) and a capacitor (C1). The inverter (2) includes six switch devices (S1, S2, S3, S4, S5, S6), diodes (D1, D2, D3, D4, D5, D6) respectively connected in parallel with corresponding one of the switch devices (S1, S2, S3, S4, S5,S6), a seventh and an eighth diodes (D7, D8) and a first and a second inductors (L1, L2). The first, the third and the fifth switch devices (S1, S3, S5) are connected in series. The second, the fourth and the sixth switch devices (S2, S4, S6) are connected in series. The two series connected circuits are connected in parallel between the two terminals of the capacitor (C1). The cathode of the seventh diode (D7) is connected with the first terminal of the third switch device (S3) and the anode of the seventh diode (D7) is connected with the second terminal of the fourth switch device (S4). The cathode of the eighth diode (D8) is connected with the first terminal of the fourth switch device (S4) and the anode of the eighth diode (D8) is connected with the second terminal of the third switch device (S3). The first terminal of the first inductor (L1) is connected with the second terminal of the fourth switch device (S4). The first terminal of the second ductor(L2) is connected with the second terminal of the third switch device (S3). The second terminal of the first inductor (L1) and the second terminal of the second inductor (L2) are respectively connected with two terminals of an AC load or the mains supply. Electromagnetic interference can be reduced by the circuit.</p> |
