Research of variable frequency power based on new permanent magnetism step pulse-width modulation

Lianchao Zhong; Mingfu Zhao; Chun Dong; Yan Chen; Jianghua Liu

doi:10.1117/12.718187

30 October 2006 Research of variable frequency power based on new permanent magnetism step pulse-width modulation

Lianchao Zhong, Mingfu Zhao, Chun Dong, Yan Chen, Jianghua Liu

Proceedings Volume 6358, Sixth International Symposium on Instrumentation and Control Technology: Sensors, Automatic Measurement, Control, and Computer Simulation; 635843 (2006) https://doi.org/10.1117/12.718187
Event: Sixth International Symposium on Instrumentation and Control Technology, 2006, Beijing, China

Abstract

The paper introduces a variable frequency power on permanent magnetism step rotation pulse-width modulation. It consists rectifier filter, computer control circuit and inverter. According to the equal-acreage principle, the computed width data of the chopped pulse of the frequency conversing power gets two-phase data in 60°, and the output wave of this mode make the motor magnetism constant, while each magnetism directions on two sides of each chopped wave keep invariable, so the magnetism is regarded as step rotating in microcosmic. If theoretic output plus is 100% standard pulse-width modulated sine wave, the harmonic distortion can be less than 5%. When they are working, the wave is double polar in two-third cycle and single polar in one-third cycle in order to make total power wastage reduce by one-third. If depress the frequency and keep the pulse width, output voltage whose fall is in proportion to the frequency's fall can be got, so as to realize variable frequency, variable voltage in order to certain the output of the unsaturated motor magnetic circuit and constant torque. The power can be widely applied in the fields of machinery, metallurgy, chemical industry, light industry, etc.

Citation Download Citation

Lianchao Zhong, Mingfu Zhao, Chun Dong, Yan Chen, and Jianghua Liu "Research of variable frequency power based on new permanent magnetism step pulse-width modulation", Proc. SPIE 6358, Sixth International Symposium on Instrumentation and Control Technology: Sensors, Automatic Measurement, Control, and Computer Simulation, 635843 (30 October 2006); https://doi.org/10.1117/12.718187

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available

Members: $17.00

Non-members: $21.00 ADD TO CART

PROCEEDINGS
6 PAGES

DOWNLOAD PAPER SAVE TO MY LIBRARY

GET CITATION

RIGHTS & PERMISSIONS

Get copyright permission Get copyright permission on Copyright Marketplace

KEYWORDS

Magnetism

Modulation

Distortion

Computer programming

Control systems

Optical circuits

Phase shift keying

Show All Keywords

Keywords/Phrases

Search In:

Publication Years