Impedance-based Stability Analysis of Servo Drive DC Bus Systems

Servo drive motor systems using PWM inverters have become very popular in the industrial market owing to their excellent control over torque, speed and position. Recently, problems of EMI noise and complexity of wiring from 3-phase PWM inverter power line cables have become critical issues in factor...

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Bibliographic Details
Published inIEEJ JOURNAL OF INDUSTRY APPLICATIONS Vol. 140; no. 3; p. 184
Main Authors Kiribuchi, Takeshi, Zaitsu, Toshiyuki, Doi, Masashi, Kusaka, Keisuke, Itoh, Jun-ichi, 桐淵 岳, 俊行, 財津, 昌志, 土井, 佳祐, 日下, 淳一, 伊東
Format Journal Article
LanguageJapanese
Published Tokyo Japan Science and Technology Agency 01.01.2020
Subjects
Buses
Cables
Data buses
Electromagnetic interference
Impedance
Industrial plants
Inverters
Power lines
Printing industry
Servoamplifiers
Servomotors
Stability analysis
Wiring
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Summary:Servo drive motor systems using PWM inverters have become very popular in the industrial market owing to their excellent control over torque, speed and position. Recently, problems of EMI noise and complexity of wiring from 3-phase PWM inverter power line cables have become critical issues in factories. In addition, using the regenerative energy of a motor has become important. A DC bus system can be a solution to these problems and demands. However, the DC bus system for servo drives has a risk of system instability because of interference between the DC bus and the servo drives. In this paper, an impedance-based stability analysis method is proposed that can predict the stability by only using the I/O (impedance) characteristics instead of all the system properties. The experimental results show that this method is useful.
ISSN:2187-1094
2187-1108
DOI:10.1541/ieejias.140.184