A flexible DSTATCOM operating in voltage or current control mode | Zendy

Gerard Ledwich | Zendy; Arindam Ghosh | Zendy

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A flexible DSTATCOM operating in voltage or current control mode

Author(s) -

Gerard Ledwich,

Arindam Ghosh

Publication year - 2002

Publication title -

iee proceedings - generation transmission and distribution

Language(s) - English

Resource type - Journals

eISSN - 1359-7051

pISSN - 1350-2360

DOI - 10.1049/ip-gtd:20020009

Subject(s) - total harmonic distortion , control theory (sociology) , voltage , three phase , voltage source , topology (electrical circuits) , harmonic , capacitor , filter (signal processing) , common mode signal , computer science , electronic engineering , engineering , control (management) , physics , electrical engineering , acoustics , digital signal processing , artificial intelligence , analog signal

The topology and control are discussed of a distribution static compensator (DSTATCOM) that can be operated flexibly in the voltage or current control mode. In the voltage control mode, the DSTATCOM can force the voltage of a distribution bus to be balanced sinusoids. In the current control mode, it can cancel distortion caused by the load, such that current drawn by the compensated load is pure balanced sinusoid. Both these objectives are achieved, irrespective of unbalance and harmonic distortions in load currents or source voltages. The chosen DSTATCOM topology includes three single-phase voltage source inverters connected in parallel to a filter-capacitor, which allows the high-frequency component of the current to pass. A switching control scheme is proposed, and its suitability is proved for this problem. The proposed scheme is verified using computer simulation studie

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