Many research groups are developing series voltage compensators. In the series converter, since a transformer is used in series in the power system, the power system current flows into the voltage source inverter through the transformer. The inverter current, which is determined by the transformation ratio, gives rise to an error voltage that consists of a dead-time voltage and an impedance voltage; the error voltage is generated even when the reference voltage is zero. This paper describes the generation mechanism of the error voltage and proposes a method for reducing the error voltage.

No abstract

In this paper, we propose a strategy for the design of the LCR filter in a series voltage compensator and investigate our method by performing simulations and experiments. In the proposed method, first, the inductance L f is derived from the ratio of the maximum amplitude of the ripple current to the amplitude of the fundamental current, which is denoted as {%I ri p }. Second, the capacitance C f is derived from the ratio of the ripple voltage to the fundamental voltage. Third, the resistance R is determined from the rate of decrease of the carrier frequency component and the settling time. C⃝ 2014 Wiley Periodicals, Inc. Electr Eng Jpn, 191(2): 24-35, 2015; Published online in Wiley Online Library (wileyonlinelibrary.com).

SUMMARY Many research groups are developing series voltage compensators. In a series converter, since a transformer is used in series in the power system, the power system current flows into the voltage source inverter through the transformer. The inverter current, which is determined by the transformation ratio, gives rise to an error voltage that consists of a dead‐time voltage and an impedance voltage. The error voltage is generated even when the reference voltage is zero. This paper describes the mechanism by which the error voltage occurs and proposes a method for reducing the error voltage. © 2013 Wiley Periodicals, Inc. Electr Eng Jpn, 186(3): 85–93, 2014; Published online in Wiley Online Library (http://wileyonlinelibrary.com). DOI 10.1002/eej.22333

No abstract