Field Weakening Control of Induction Motor Drives
碩士 === 淡江大學 === 機械工程學系 === 86 === A practical scheme for field weakening control of induction motor drives is proposed. This scheme utilize control of the stator flux to be inversely proportional to the motor speed when in the field weakening region, and at the same time maintain the rotor flux o...
| Main Authors: | , |
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| Other Authors: | |
| Format: | Others |
| Language: | zh-TW |
| Published: |
1998
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| Online Access: | http://ndltd.ncl.edu.tw/handle/02134530532161859954 |
| Summary: | 碩士 === 淡江大學 === 機械工程學系 === 86 ===
A practical scheme for field weakening control of induction motor drives is proposed. This scheme utilize control of the stator flux to be inversely proportional to the motor speed when in the field weakening region, and at the same time maintain the rotor flux orientation in order to keep the instantaneous control of the motor torque. Stator flux field weakening is more efficiency than rotor flux field weakening control in using fixed power source voltage.
A flux observer is also proposed by combing voltage model and current model in compensation way. There is a solution in the switching of field weakening point that torque is unstable. Derivation and analysis of the control law is presentation in the paper including compensation,and the control scheme is verified with simulation and experimental result.
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