Design and Control of Six-Phase Permanent-Magnet Synchronous Motors
碩士 === 國立臺灣科技大學 === 電機工程系 === 94 === This thesis presents the design and implement of six-phase permanent-magnet synchronous motors. The double three-phase winding motor can be operated in lower speed when one winding breaks down. Two-leg boost dc-dc power converter is used to convert the voltage of...
| Main Authors: | , |
|---|---|
| Other Authors: | |
| Format: | Others |
| Language: | zh-TW |
| Published: |
2006
|
| Online Access: | http://ndltd.ncl.edu.tw/handle/p3en2s |
| Summary: | 碩士 === 國立臺灣科技大學 === 電機工程系 === 94 === This thesis presents the design and implement of six-phase permanent-magnet synchronous motors. The double three-phase winding motor can be operated in lower speed when one winding breaks down. Two-leg boost dc-dc power converter is used to convert the voltage of batteries from 48V to dc-link voltage between 48V and 100V. Depending on the speed of motor, the dc-link voltage can be automatically adjusted to improve the shake of motor in low speed. It thus can not only raise dc-link voltage, but also reduce current harmonics of battery to increase its efficiency and life. Coordinate transformation and rotor-flux oriention are used in the closed-loop control of speed and current to increase the efficiency and speed response. In addition, the speed/position of rotor is detected by using cheep and small magnetic rotary encoder.
The flux and induction voltage of synchronous motor are analyzed by the two-dimensional finite-element field analysis software FLUX2D. A digital signal processor TMS320LF2407A is used as the control core. The control of motor and power converter is accomplished by software for cost reduction. A prototype of 250W six-phase synchronous motor is developed. Simulation and experimental results are given to justify the analysis.
|
|---|