Title :
Predictive proportional integral controller for digital DC-DC converters
Author :
Foong, Huey Chian ; Meng Tong Tan ; Zheng, Yuanjin
Author_Institution :
Sch. of Electr. & Electron. Eng., Nanyang Technol. Univ., Singapore, Singapore
Abstract :
This paper presents a predictive proportional integral control for digital DC-DC converter. The predictive controller predicts the output voltage of the next switching cycle by estimating the charge of the inductor and diode current charging the output capacitor. The controller also features an upper bound and a lower bound to limit the overshoot and undershoot of the output voltage respectively. The controller design is verified with measurements on a Virtex-4 FPGA board. Measurement results show that the converter achieves an maximum overshoot of 35 mV and maximum undershoot of 30 mV for a load current change of 1 A and a line voltage change of 2 V.
Keywords :
DC-DC power convertors; PI control; capacitors; controllers; field programmable gate arrays; inductors; power system control; Virtex-4 FPGA board; controller design; current 1 A; digital DC-DC converters; diode current; inductor; output capacitor; predictive proportional integral controller; switching cycle; voltage 2 V; voltage 30 mV; voltage 35 mV; Capacitors; Equations; Inductors; Mathematical model; Switches; Voltage control;
Conference_Titel :
Industrial Electronics and Applications (ICIEA), 2011 6th IEEE Conference on
Conference_Location :
Beijing
Print_ISBN :
978-1-4244-8754-7
Electronic_ISBN :
pending
DOI :
10.1109/ICIEA.2011.5975991
