1. Virtual Voltage Source Control for 2 × 27 MVA Machine Test Bench.
- Author
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Shen, Jie, Shi, Jingkui, Qu, Bo, She, Hongwu, Zhu, Jun, and Li, Yulong
- Subjects
IDEAL sources (Electric circuits) ,ELECTRIC potential ,ALTERNATING currents ,ENERGY conversion ,MACHINERY industry - Abstract
In this paper, a special control solution called virtual voltage source (VVS) is developed for no-load tests of induction machines. This concept is applied to a 2 × 27 MVA high-power machine test bench where the test bench is requested to precisely characterize, e.g., 3 MW machines at no-load currents. The developed VVS thoroughly solves the stability issue of induction machines at low-speed ranges. A set of optimizations is presented here that systematically improves the voltage precision of the test bench. Experimental results prove that the proposed concept achieves 0.08–0.12% voltage unbalance, less than 3% current unbalance, with less than 0.3% harmonic-voltage-factor, and verified by more than 100 induction machines. [ABSTRACT FROM AUTHOR]
- Published
- 2017
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