| 摘要 |
<p>A thyristor bridge inverter 10 is connected to a switched reluctance (SR) convertor 51 - 56, 61 - 66 and to an ac source of voltage 11, without requiring a transformer, so that no circulating currents between a diode bridge rectifier 2 and the inverter 10 are possible. In addition to the thyristor inverter 10, a capacitor 7 is provided to which diodes 61 - 66 of the SR convertor return energy. The capacitor 7 has its positive terminal connected to the positive terminal of a dc link capacitor 3 via a diode 8 whose conducting direction is chosen to convey current towards the positive terminal of the dc link capacitor, and has its negative terminal connected to the negative terminal of the dc link capacitor 3 via a second diode 9 whose conducting direction is chosen to convey current away from the negative terminal of the do link capacitor. The SR motor windings 4 are shown connected to the SR convertor. <IMAGE></p> |
