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

Author

Bo Qu ; Jingkui Shi ; Hongwu She ; Jie Shen ; Schroeder, Stefan ; Zhuohui Tan ; Kunlun Chen ; Jianmei Zhang ; Yulong Li ; Fan Zhang ; Zhang, Richard

Author_Institution

GE Global Res., Shanghai, China

fYear

2015

fDate

1-5 June 2015

Firstpage

611

Lastpage

616

Abstract

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.

Keywords

machine control; machine testing; power filters; power transformers; thyristors; carrier frequency; control strategies; dynamic response; frequency 600 Hz; frequency 80 Hz; integrated gate commutated thyristors; load frequency; machine control; machine test bench; motor test; multilevel IGCT converters; power 22 MW; pumpback topology; sine filter; system stability; transformer; voltage-source-inverter; Bandwidth; Control systems; Delays; Machine control; Pumps; Stability analysis; Voltage control; High Power; LCL filter; Low Carrier Ratio; Motor Control; Test Bench;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Electronics and ECCE Asia (ICPE-ECCE Asia), 2015 9th International Conference on

Conference_Location

Seoul

Type

conf

DOI

10.1109/ICPE.2015.7167847

Filename

7167847