Title :
A combined approach using phase-controlled rectifiers and high-frequency converters for magnet-load power supplies
Author :
Jin, H. ; Wang, Yannan ; Joos, G.
Author_Institution :
Dept. of Electr. & Comput. Eng., Concordia Univ., Montreal, Que., Canada
Abstract :
In this paper, a control technique for a hybrid large-power high-precision magnet power supply is presented. The system consists of a phase controlled rectifier and a high-frequency PWM converter. The rectifier is designed to handle the main output power and the PWM converter is designed only for harmonics cancellation and error compensation. A feedforward control scheme is proposed to ensure that the desired power sharing is maintained during both the steady state and transient operations. The operating principles of the proposed structure are discussed in the paper, and the results from computer simulation verify the concept
Keywords :
digital simulation; electromagnets; phase control; power convertors; power engineering computing; power supplies to apparatus; pulse width modulation; rectifiers; rectifying circuits; PWM converter; computer simulation; error compensation; feedforward control; harmonics cancellation; high-frequency converters; magnet-load power supplies; phase-controlled rectifiers; power sharing; steady state operation; transient operations; Error compensation; Magnetic switching; Open loop systems; Power generation; Power harmonic filters; Power supplies; Power system harmonics; Pulse width modulation converters; Rectifiers; Steady-state;
Conference_Titel :
Applied Power Electronics Conference and Exposition, 1994. APEC '94. Conference Proceedings 1994., Ninth Annual
Conference_Location :
Orlando, FL
Print_ISBN :
0-7803-1456-5
DOI :
10.1109/APEC.1994.316408
