Title :
Predicted (on-time) equal-charge criterion scheme for constant-frequency control of single-phase boost-type AC-DC converters
Author :
Oruganti, Ramesh ; Nagaswamy, Kannan ; Sang, Lock Kai
Author_Institution :
Dept. of Electr. Eng., Nat. Univ. of Singapore, Singapore
fDate :
1/1/1998 12:00:00 AM
Abstract :
A new constant switching frequency control method for single-phase boost-type AC-DC power converters is presented. The on times of the converter switches in each switching period is determined such that the average input current tracks the reference template in every switching cycle. The problems encountered in achieving smooth and stable operation and the modifications made to overcome them are discussed. The simulation studies done on a power converter controlled with this method, which is known as the predicted (on-time) equal-charge criterion (PECC) method, indicate stable operation at different input-current and voltage levels and power factors. The method was implemented on an insulated gate bipolar transistor (IGBT) power converter rated at 1 kVA using a 80 386 processor system for computations. The experimental results are presented and discussed in this paper
Keywords :
AC-DC power convertors; bipolar transistor switches; control system analysis; control system synthesis; digital control; frequency control; insulated gate bipolar transistors; microcomputer applications; power bipolar transistors; power semiconductor switches; rectifying circuits; switching circuits; 1 kVA; 386 microprocessor; IGBT power convertor; constant switching frequency control; control design; control performance; control simulation; predicted equal-charge criterion method; single-phase boost-type AC-DC power converters; stable operation; switching cycle; switching period; Current control; Filters; Hysteresis; Insulated gate bipolar transistors; Insulation life; Phase locked loops; Switches; Switching converters; Switching frequency; Uninterruptible power systems;
Journal_Title :
Power Electronics, IEEE Transactions on
