Abstract
AbstractThis paper proposes the Walsh function‐based position sensorless drive method of a PM motor by using high‐frequency 20‐kHz triangular‐wave‐carrier PWM inverter ripple current. The proposed method uses the Walsh harmonic of PWM inverter ripple current to estimate the motor rotor position. By using the high‐frequency switching ripple current, the period of the rotor position estimation has been decreased and improves the step response of PM motor. The Walsh function makes it possible to use a definite integrator as the Walsh harmonic detector that can separate the small ripple‐current signal from the motor drive‐current signal. The Walsh harmonic detector circuit consists of less parts than the Fourier harmonic detector circuit. The validity of the proposed method was clarified by several experimental results. © 2003 Wiley Periodicals, Inc. Electr Eng Jpn, 145(3): 80–88, 2003; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/eej.10205
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
