| 摘要 |
The static VAR generator of the fixed capacitor switch-controlled inductor type is taught. The inductive element has a break point in its inductive characteristic. That is, below a certain predetermined current, the inductance is one value and above the latter current the inductance is another value. This has the effect of providing a reduced value of inductive reactance above a certain inductive current level thus making it possible to significantly increase the inductive current above its normal range with a small increase of the switch conduction interval. In one case a saturable iron core reactor is utilized to achieve the break point and in another case two inductive elements are provided-one of which is controlled by a switch which places the latter inductor into circuit arrangement with the first at the time that the current exceeds the predetermined value. |
