Title :
Study on three-level power amplifier of magnetic bearings for high speed machine
Author :
Wang, Dapeng ; Wang, Fengxiang ; Zhao, Yong
Author_Institution :
Sch. of Electr. Eng., Shenyang Univ. of Technol., Shenyang, China
Abstract :
In order to meet the requirement of magnetic suspension bearings for high speed machine, the three-level PWM switching power amplifiers are designed and tested. The carrier triangular wave phase shift method is used in the design. The comparative study on the three-level PWM switching power amplifier with the two-level PWM switching power amplifier indicates that the three-level PWM technique can effectively reduce the current ripple of the suspension force control windings. The experimental results of the prototype verify the feasibility and effectiveness of the proposed three-level switching power amplifier.
Keywords :
driver circuits; machine bearings; magnetic bearings; magnetic levitation; power amplifiers; switching circuits; high speed machine; magnetic bearing; magnetic suspension bearing; suspension force control windings; three level PWM switching power amplifier; three level power amplifier; Nickel; Pulse width modulation; Switches; analysys of current ripple; circuit implementation; magnetic bearing; modulating mode; three-level PWM switching power amplifier;
Conference_Titel :
Computer Science and Information Technology (ICCSIT), 2010 3rd IEEE International Conference on
Conference_Location :
Chengdu
Print_ISBN :
978-1-4244-5537-9
DOI :
10.1109/ICCSIT.2010.5564107
