Research on power quality and stability control device

To cope with all power quality issues to be aroused from voltage sag, rise, transient power interruption and other disturbances of power distribution system, this article addresses a device designed to control the quality of power supply from power distribution net. Like inductor and capacitor, this device can be series connected to introduce a controllable voltage that will compensate with voltage fluctuation due to loads. In addition, a compensation voltage with equal voltage components in opposite directions against harmonic can be introduced into network to eliminate harmonic from power distribution system.