Title :
The control of switching DC-DC converters-a general LWR problem
Author :
Leung, Frank H F ; Tam, Peter K S ; Li, C.K.
Author_Institution :
Dept. of Electron. Eng., Hong Kong Polytech., Hong Kong
fDate :
2/1/1991 12:00:00 AM
Abstract :
The control of switching DC-DC converters is reviewed. It is regarded as a general linear quadratic regulator (LQR) problem, and an innovative optimal and robust digital controller is proposed. The control strategy adopted can achieve good regulation, rejection of modest disturbances, and the ability to cater to switching converters with RHP zeros. This controller design is a general approach that is applicable to all PWM-type DC-DC converters with their circuit topologies known or unknown. Modern CAD techniques are used to reach the final control law. Application to a published Cuk converter is used as an example, and the performance is evaluated
Keywords :
digital control; optimal control; power convertors; pulse width modulation; CAD techniques; Cuk converter; PWM; RHP zeros; circuit topologies; control; linear quadratic regulator; optimal control; robust digital controller; switching DC-DC converters; Circuit topology; DC-DC power converters; Design automation; Digital control; Optimal control; Pulse width modulation; Pulse width modulation converters; Regulators; Robust control; Switching converters;
Journal_Title :
Industrial Electronics, IEEE Transactions on
