Fast Charging method of the Capacitor Energy for the Voltage Sag Compensator with Controlled Gradational Voltage

Abstract

This paper presents the charging method of the capacitor energy for the new concept of voltage transient sag compensator. This compensator consists of the series connection inverter units, and each inverter unit generates a different output voltage by 2ⁿ times. Namely, in this system, the compensation energy is accumulated in each inverter unit's capacitor charged with different voltage by 2ⁿ times. The method proposed here, provides the fast charging method of the capacitor energy from these inverter units without using rectifier system.