Effects of the Reactive Power Circulation on the Static Power Frequency Changer

摘要

In general, the input power factor is defined as a ratio of active power to apparent power. The apparent power which flows from sinusoidal voltage source to nonlinear circuits, are the sum of active, fundamental reactive and distortion power. In this case, the power factor corrections are accomplished by next the three methods, decrease of fundamental reactive, distortion power and increase of active power. For the purpose, compensating capacitors, a. c filters and multiplex, polyphase systemes are used. In addition, because of increase of the active power by means of the reactive power circulating method, the power factor correction are effective. This paper is described on the powr factor, harmonic components and the experiments in the case of the reactive power circulating triple frequency changer. It is shown that the characteristics are useful.