Title :
Feed-forward pulse-width modulators for switching power converters
Author :
Arbetter, Barry ; Maksimovic, Dragan
Author_Institution :
Dept. of Electr. & Comput. Eng., Colorado Univ., Boulder, CO, USA
Abstract :
This paper describes novel pulse-width modulators that employ feed-forward compensation to improve steady-state and dynamic responses of power converters. It is shown how ideal feed-forward pulse-width modulators (FF-PWM) can be constructed for all duty-ratio controlled switch-mode power converters. A converter with FF-PWM at low frequencies behaves as a linear power amplifier with constant gain independent of operating conditions. The proposed FF-PWM can be easily implemented using the same building blocks found in conventional PWM controllers. Experimental and simulation examples are presented
Keywords :
DC-DC power convertors; PWM power convertors; feedforward; modulators; power amplifiers; switched mode power supplies; boost converter; constant gain; duty-ratio controlled; feed-forward compensation; linear power amplifier; low frequencies; pulse-width modulators; switching power converters; Feedforward systems; Open loop systems; Pulse amplifiers; Pulse modulation; Pulse width modulation; Pulse width modulation converters; Pulse width modulation inverters; Steady-state; Switching converters; Voltage;
Conference_Titel :
Power Electronics Specialists Conference, 1995. PESC '95 Record., 26th Annual IEEE
Conference_Location :
Atlanta, GA
Print_ISBN :
0-7803-2730-6
DOI :
10.1109/PESC.1995.474870
