Title :
Voltage sag and unbalance mitigation in distribution systems using multi-level UPQC
Author :
Farokhnia, N. ; Fathi, S.H. ; Toodeji, H.R.
Abstract :
Unified Power Quality Conditioner (UPQC) is a series-parallel element in the Flexible AC Transmission System (FACTS) family. In this paper, a UPQC with cascaded multilevel inverter is proposed. Voltage sag, unbalance and load power factor in distribution system is mitigated using proposed multilevel UPQC. There is no need of using transformer and filter when multilevel UPQC is applied and it is one of its advantages. SPWM (Sinusoidal Natural Pulse Width Modulation) scheme is used for pulse generation to control multilevel inverters. The results showed the effectiveness of the proposed method.
Keywords :
PWM invertors; flexible AC transmission systems; power distribution; power factor; power supply quality; FACTS; SPWM scheme; distribution systems; flexible ac transmission system; load power factor; multilevel UPQC; multilevel inverters; pulse generation; sinusoidal natural pulse width modulation; unbalance mitigation; unified power quality conditioner; voltage sag; Automatic voltage control; Computer languages; Inverters; MOSFETs; Switches; Cascade Multilevel Inverter; Custom Power; Distribution Grid; UPQC; Unbalance; Voltage sag;
Conference_Titel :
Power Quality Conference (PQC), 2010 First
Conference_Location :
Tehran
Print_ISBN :
978-1-4244-8483-6
Electronic_ISBN :
978-964-463-063-7
