Title :
On the selection of control-law coefficients for multi-loop PWM switching regulators
Author :
Mitchell, Daniel M. ; Schoneman, George K.
Author_Institution :
Rockwell Int. Corp., Cedar Rapids, IA, USA
Abstract :
The relationship between the control-law coefficients and the closed-loop transfer functions for second-order, multiloop, pulsewidth-modulated (PWM) switching regulators is examined. Detailed results are presented for input impedance, output current susceptibility, input voltage susceptibility, and output impedance of the basic buck, boost and buck-boost regulators. The relationship is used as a basis for selecting the feedback and feedforward coefficients for maximum performance of the regulators.<>
Keywords :
closed loop systems; control system synthesis; feedback; power convertors; pulse width modulation; switching; transfer functions; PWM switching regulators; boost; buck; buck-boost; control-law coefficients; feedback; feedforward; input impedance; input voltage susceptibility; output current susceptibility; output impedance; performance; power convertors; transfer functions; Control systems; Feedback loop; Feedforward systems; Impedance; Inductors; Open loop systems; Performance analysis; Pulse width modulation; Regulators; Voltage control;
Conference_Titel :
Power Electronics Specialists Conference, 1988. PESC '88 Record., 19th Annual IEEE
Conference_Location :
Kyoto, Japan
DOI :
10.1109/PESC.1988.18180
