Title :
Design of a highly stable electromagnet power supply
Author_Institution :
Dept. of Electron. & Electr. Eng., Pohang Inst. of Sci. & Technol., South Korea
fDate :
4/1/1992 12:00:00 AM
Abstract :
A method for designing a highly stable electromagnet power supply combining the 12-pulse phase-controlled rectifier (PCR), passive filter, and transformed active filter is investigated. The PCR system is analyzed, and passive filter parameters are designed from this analysis. A phase-locked voltage control circuit with a fast dynamic characteristic is analyzed, and an optimal constant proportional-integral and measurable variable feedback plus feedforward (PIMF) current controller is designed using a time-weighted quadratic performance index. It is shown via experimental results that the proposed design method gives good performance
Keywords :
active filters; electric current control; electromagnets; feedback; passive filters; performance index; phase control; power supplies to apparatus; rectifiers; two-term control; voltage control; 12-pulse phase-controlled rectifier; PIMF current controller; fast dynamic characteristic; measurable variable feedback plus feedforward; optimal constant proportional integral control; passive filter; phase-locked voltage control circuit; stable electromagnet power supply; time-weighted quadratic performance index; transformed active filter; Active filters; Current measurement; Design methodology; Electromagnets; Feedback circuits; Passive filters; Performance analysis; Power supplies; Rectifiers; Voltage control;
Journal_Title :
Industrial Electronics, IEEE Transactions on
