DocumentCode :
1181384
Title :
An analytical approach for characterizing harmonic and interharmonic currents generated by VSI-fed adjustable speed drives
Author :
Chang, Gary W. ; Chen, Shin-Kuan
Author_Institution :
Dept. of Electr. Eng., Nat. Chung Cheng Univ., Chia-Yi, Taiwan
Volume :
20
Issue :
4
fYear :
2005
Firstpage :
2585
Lastpage :
2593
Abstract :
Applications of solid-state converters for adjustable speed drives (ASDs) are popular in industrial systems. The ac/dc/ac conversion system, frequently used to provide ac voltages with adjustable frequency/magnitude in the ASDs, consists of a voltage source inverter (VSI) fed by a three-phase diode-bridge rectifier, which generates significant amount of line harmonic and interharmonic currents into the supply system and may cause undesired effects on other power system components. This paper presents an analytical approach for characterizing the current harmonics and interharmonics of the VSI-fed ASD injected into the supply system in steady state, where the circuit models for the rectifier, the dc link, the PWM inverter, and the ac motor are considered in the analysis. The accuracy of the results obtained by the proposed model is demonstrated by comparing with those obtained by using the time-domain simulation tool, Simulink of Matlab, and by laboratory tests. It is shown that the proposed approach is effective to characterize current harmonics and interharmonics generated by the ASD, while the solution accuracy and the computational efficiency are still maintained.
Keywords :
AC motors; PWM invertors; harmonics; rectifying circuits; variable speed drives; PWM inverter; ac motor; ac-dc-ac conversion system; adjustable speed drives; current harmonics; interharmonic currents generation; solid-state converters; three-phase diode-bridge rectifier; time-domain simulation tool; voltage source inverter; Character generation; Harmonic analysis; Mathematical model; Power system harmonics; Power system modeling; Pulse width modulation inverters; Rectifiers; Solid state circuits; Variable speed drives; Voltage; Adjustable speed drive; double Fourier series; harmonics; interharmonics; voltage source inverter;
fLanguage :
English
Journal_Title :
Power Delivery, IEEE Transactions on
Publisher :
ieee
ISSN :
0885-8977
Type :
jour
DOI :
10.1109/TPWRD.2005.855487
Filename :
1514507
Link To Document :
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