Title :
Implementation of current source inverter for power line conditioning
Author :
Williams, S.M. ; Hoft, R.G.
Author_Institution :
Missouri Univ., Columbia, MO, USA
Abstract :
A current-source inverter (CSI) designed to operate as a power line conditioner for which only six power switches are required is presented. A 5 kVA test model of the current-source inverter has been built using insulated gate bipolar transistors (IGBTs) controlled by a digital signal processor (DSP). To determine system performance, experimental results are compared with computer simulations of an innovative adaptive frequency domain control for pulse-width modulation (PWM) switching of the CSI. It is shown that the steady-state distortion factor of the line current is reduced from 28% to 5% or less. The displacement power factor is corrected from 0.5 lagging to unity. Single-cycle PLC response time to a step change in load is demonstrated.<>
Keywords :
adaptive control; digital control; frequency control; insulated gate bipolar transistors; invertors; 5 kVA; DSP; IGBT; PLC response time; PWM switching; adaptive frequency domain control; computer simulations; current source inverter; digital signal processor; displacement power factor; insulated gate bipolar transistors; load step change; power line conditioning; pulse-width modulation; steady-state distortion factor; test model; Digital control; Digital signal processing; Digital signal processors; Insulated gate bipolar transistors; Power system modeling; Programmable control; Pulse width modulation; Pulse width modulation inverters; System performance; Testing;
Conference_Titel :
Industry Applications Society Annual Meeting, 1990., Conference Record of the 1990 IEEE
Conference_Location :
Seattle, WA, USA
Print_ISBN :
0-87942-553-9
DOI :
10.1109/IAS.1990.152317
