Proceedings Article10.1109/PESC.1994.349731
Control of variable active-passive reactance (VAPAR) and negative inductance
Hirohito Funato,Atsuo Kawamura +1 more
- 20 Jun 1994
- Vol. 1, pp 189-196
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TL;DR: In this paper, the authors proposed an equivalent resistance control method for the capacitor DC voltage regulation when a capacitor is used as an energy storage element of the variable active-passive reactance (VAPAR).
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Abstract: The concept of the variable active-passive reactance (VAPAR) which behaves like a two-terminal reactive element, and the produced active reactance works as a passive reactive component, including in transient state. In this paper, the authors propose the equivalent resistance control method for the capacitor DC voltage regulation when a capacitor is used as an energy storage element of the VAPAR. The series equivalent resistance is added to the produced virtual inductance, and the capacitor voltage is controlled by changing the series equivalent resistance. The proposed scheme is verified by simulations and experiments. The realization of the negative inductance is then proposed. Through simulations and experiments, it is verified that the VAPAR can generate negative inductance, which may be applied to FACTS. The effects of negative inductance are compared with that of series capacitance used in power systems. >
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Citations
Hybrid solutions for improving passive filter performance in high power applications
TL;DR: In this article, a variable inductance controller for a parallel hybrid active filter system is proposed to selectively synthesize multiple "active inductances" at dominant harmonic frequencies without affecting passive filter impedances at all other frequencies.
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Hybrid solutions for improving passive filter performance in high power applications
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Realization of negative inductance using variable active-passive reactance (VAPAR)
TL;DR: In this paper, the authors analyzed the characteristics of negative inductance and showed how to produce negative induction by variable active-passive reactance (VAPAR) in a two-terminal reactive element.
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Patent
Power line harmonic reduction by hybrid parallel active/passive filter system with square wave inverter and DC bus control
Po-Tai Cheng,Subhashish Bhattacharya,Deepakraj M. Divan +2 more
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Power electronics in electric utilities: static VAR compensators
Laszlo Gyugyi
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TL;DR: In this article, the authors deal with dynamic VAR compensation of electric power systems, applying power electronics for reactive power generation and control, and show how the dynamic compensation increased transmittable power by providing voltage support, transient stability improvement, and power oscillation damping in electric power transmission systems.
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The application of 'loss-free resistors' in power processing circuits
Sigmond Singer
- 26 Jun 1989
TL;DR: In this paper, the synthesis of a loss-free element with resistive characteristics in power processing systems is discussed, based on the control of a two port which has a transformer or gyrator matrix.
81
Proposal of variable active-passive reactance
H. Funato,Atsuo Kawamura +1 more
- 09 Nov 1992
TL;DR: In this paper, a variable active-passive reactance (VAPAR) is proposed, which consists of an inverter and a passive element, and the VAPAR behaves like a two-port reactive element and the produced active reactance works as a passive reactive component, including in the transient state.
61
Analysis of variable active-passive reactance
H. Funato,Atsuo Kawamura +1 more
- 19 Apr 1993
TL;DR: In this article, the characteristics of variable active-passive reactance (VAPAR) are analyzed, which consists of an inverter and passive elements, and behaves like a two-port variable reactance element.
16