Abstract
This paper proposes a novel and simple control method for the active power quality compensators (APQCs) used in electrified railways. The proposed method uses only the constant dc capacitor voltage control block, which is commonly used in the APQCs. No detection blocks of the harmonic, reactive, and negative-sequence components are necessary. Thus we offer the simplest way to compensate the harmonic, reactive, and negative-sequence currents on the primary side of the Scott transformer in the traction substation. The basic principle of the proposed control method is discussed in detail, and then confirmed by digital computer simulation using PSIM software. A prototype experimental model is constructed and tested. Experimental results demonstrate that the balanced source currents with the unity power factor are obtained on the primary side with the proposed control method, which uses only the constant dc capacitor voltage control.
Original language | English |
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Pages (from-to) | 435-441 |
Number of pages | 7 |
Journal | IEEJ Transactions on Electrical and Electronic Engineering |
Volume | 4 |
Issue number | 3 |
DOIs | |
Publication status | Published - May 2009 |
Externally published | Yes |
Keywords
- Active power quality compensator
- Constant dc capacitor voltage control
- Electrified railway
- Scott transformer
- Three-leg inverter
ASJC Scopus subject areas
- Electrical and Electronic Engineering