Electrical, Information Engineering and Mechatronics 2011 pp 1913-1920 | Cite as
Study on Direct Force Control for PMLSM Based on SVPWM and the Flux Dynamic Compensation
Focused on directing force control (DFC) of permanent magnet linear synchronous motor (PMLSM) existing thrust ripple, the space voltage vector pulse width modulation technology (SVPWM) will be introduced into PMLSM DFC strategy in order to reduce thrust ripple and improve system control performance. Full consideration of the motor running process with the rise of temperature, the change of the primary winding resistance caused the error between the flux observed value and the actual value. A new flux dynamic compensation algorithm was proposed. The dynamic compensator was built to improve the observation accuracy of the primary flux, which solved effectively the wrong voltage vector choice and the system control performance failure due to the error of the primary flux. The experimental results show that the PMLSM DFC based on SVPWM and the flux dynamic compensation has better control performance.
KeywordsSVPWM Dynamic compensation PMLSM Direct force control
This work was supported by the Foundation for University Key Teacher by Henan Province (2010GGJS-230), and Doctor Foundation of Henan Polytechnic University (2011065), and National Natural Science Foundation of China (NO. 61074095), and Ministry of Education Scientific Research Foundation for Chinese Overseas Returnees and Research Fund for the Doctoral Program of Higher Education (NO. 20104116120001).
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