Secondary control for a series reactive compensator based on a voltage-source PWM inverter

Jung Wook Park, Ronald G. Harley

Research output: Contribution to journalArticlepeer-review

7 Citations (Scopus)


This letter describes a new secondary control scheme of a series reactive compensator for a power system based on a single voltage-source pulse-width-modulated (PWM) inverter. The controllable capacitive reactance can be used as a supplementary control variable for the secondary (external) controller (SC) of a series capacitive reactance compensator to improve the dynamic transient and damping performances of the power system. From the viewpoint of agent-based global dynamic optimization of a system, the selection and use of suitable input signals for the SC are investigated. Detailed simulation results show that the SC with local feedback loop (LFL) has a powerful control performance; however, it requires the controllable compensation for a reference change due to different operating conditions. On the other hand, the SC with global feedback loop (GFL) avoids the need of reference compensation; moreover, its dynamic control performance is improved when the dual inputs (frequency and active power signal) are used, compared to when only the frequency is used as an input signal.

Original languageEnglish
Pages (from-to)117-120
Number of pages4
JournalIEEE Power Electronics Letters
Issue number4
Publication statusPublished - 2004 Dec

All Science Journal Classification (ASJC) codes

  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering


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