Title :
Parallelable PWM amplifier
Author :
Burwen, Richard S.
Author_Institution :
Consultant for Copley Controls Corporation, Newton, MA 02164
Abstract :
A modular pulse-width modulation (PWM) power amplifier parallelable up to 47-KW peak is being used in magnetic resonance imaging (MRI), dc servo, audio, and other electromagnetic applications. Each of two independent half bridges in a module contains its own output filters and a multiple loop feedback system that equalizes power sharing, damps load resonance, and is switchable to either voltage or current control. During the development, a nondestructive power MOSFET dv/dt tester was devised.
Keywords :
Bridge circuits; Inductors; Power MOSFET; Pulse width modulation; Transistors; Voltage control;
Journal_Title :
Instrumentation and Measurement, IEEE Transactions on
DOI :
10.1109/TIM.1987.6312598
