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Transient analysis of an advanced static var compensator using quad‐series voltage‐source PAM inverters
Author(s) -
Tominaga Shinji,
Fujita Hideaki,
Akagi Hirofumi
Publication year - 1996
Publication title -
electrical engineering in japan
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.136
H-Index - 28
eISSN - 1520-6416
pISSN - 0424-7760
DOI - 10.1002/eej.4391170209
Subject(s) - capacitor , transient (computer programming) , voltage , transformer , voltage source , static var compensator , inverter , control theory (sociology) , transient voltage suppressor , decoupling capacitor , ac power , engineering , electronic engineering , electrical engineering , computer science , control (management) , artificial intelligence , operating system
This paper deals with an advanced static Var compensator (ASVC) using quad‐series voltage‐source PAM inverters. The ASVC consists of four three‐phase voltage‐source inverters with a common dc capacitor and four three‐phase transformers, each primary winding of which is connected in series with each other. Each inverter outputs a square‐wave voltage, while the synthesized output voltage of the ASVC has a 24‐step wave shape. This results not only in a great reduction of harmonic currents and dc voltage ripples but also in fewer switching and snubbing losses. In this paper, transient analysis is performed with the focus on the response of reactive power and the resonance between the dc capacitor and ac reactors. Experimental results obtained from a small‐rated laboratory model of 10 kVA are also shown to verify analytical results based on the p‐q transformation. The analytical results help in the design of system parameters such as the capacity of the dc capacitor and feedback gains.