Title :
Study of switching power amplifier for active magnetic bearing
Author :
Liu, Shuqin ; Chen, Darong ; Liu, Shuqin ; Xu, Feng
Author_Institution :
Dept. of Precision Instrum., Tsinghua Univ., Beijing, China
Abstract :
In view of some disadvantages of the discrete component switching power amplifier for active magnetic bearing (AMB) such as troublesome debugging, low reliability and distortion of input-output curves, a new power amplifier is studied for AMB. It is designed by use of integrated pulse width modulate (PWM) switching power amplifier SA60, and the interface circuits between the control circuits and the power amplifier are designed. The experiment results showed that the integrated switching power amplifier is advantageous than the discrete component power amplifier in input-output characteristics, at last some improved methods are proposed.
Keywords :
magnetic bearings; power amplifiers; pulse width modulation; switching circuits; PWM; active magnetic bearing; control circuits; discrete components; input-output characteristics; integrated pulse width modulation; interface circuits; reliability; switching power amplifier; troublesome debugging;
Conference_Titel :
Power Electronics and Motion Control Conference, 2004. IPEMC 2004. The 4th International
Conference_Location :
Xi´an
Print_ISBN :
7-5605-1869-9
