Control strategies for a high-performance 2×27 MVA machine test bench with multilevel IGCT converters

In this paper, control strategies of a 22 MW / 27 MVA machine test bench using pumpback topology are introduced. The current loop design at extremely low pulse ratios (e.g. 600 Hz carrier frequency / 80 Hz load frequency) is developed. The system stability and dynamic response are analyzed. The chal...

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Bibliographic Details
Main Authors: Bo Qu, Jingkui Shi, Hongwu She, Jie Shen, Schroeder, Stefan, Zhuohui Tan, Kunlun Chen, Jianmei Zhang, Yulong Li, Fan Zhang, Zhang, Richard
Format: Conference Proceeding
Language:English
Subjects:
Bandwidth
Control systems
Delays
High Power
LCL filter
Low Carrier Ratio
Machine control
Motor Control
Pumps
Stability analysis
Test Bench
Voltage control
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Summary:In this paper, control strategies of a 22 MW / 27 MVA machine test bench using pumpback topology are introduced. The current loop design at extremely low pulse ratios (e.g. 600 Hz carrier frequency / 80 Hz load frequency) is developed. The system stability and dynamic response are analyzed. The challenges for high-power machine control with a sine filter and a transformer connected between the voltage-source-inverter and the machine are listed and solutions are given. Afterwards, some specific test modes are introduced as well. Finally, the control strategy is validated with the motor test at the customer site.
ISSN:2150-6078
DOI:10.1109/ICPE.2015.7167847