Switched capacitor fuzzy control for power factor correction in inductive circuits

Suciu, Constantin; Dafinca, L.; Kansara, M.; Margineanu, I.

doi:10.1109/pesc.2000.879913

Cited by 13 publications

(8 citation statements)

References 4 publications

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“…In [4], the author describes the switched capacitor concept which is used to improve the power factor of the inductive circuit. It consists of placing an ac capacitor in the middle of an H bridge with bi-directional switches as shown in Fig.1.…”

Section: B) During Time Interval T 2 -Dischargingmentioning

confidence: 99%

“…Lately, the work in this field has been facilitated by the development of the buck, boost or buck-boost converters using soft switching techniques (multiresonant or quasi-resonant versions). Novel control strategies based on concepts such as: delta modulation or fuzzy logic has been developed [4] The switched capacitor concept [4] has been adopted with the use of non-resistive secondary control of an induction motor to improve the efficiency, power factor and torque. It utilizes the concept of switched capacitor which makes use of four thyristors which forms a H-bridge circuit and a single capacitor for each rotor phase.…”

Section: Introductionmentioning

confidence: 99%

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Performance Enhancement of Wound Rotor Induction Motor by VSI with Dynamic Capacitor Controlled Rotor Circuit

kumar¹,

Palaniswami²,

Priyadharsini³

2010

IJCA

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The paper proposes a novel method for improving performance of a Three Phase wound rotor induction motor using an indirect reactive current control scheme in the rotor. A 3 phase VSI with a dynamic capacitor is connected in the rotor circuit for controlling the reactive current in the rotor. The dynamic capacitor is an Hbridge switch with a capacitor in which the duty ratio of the Hbridge circuit is varied in order to change the capacitance value dynamically. The proposed technique is simulated in MATLAB 7.6 / Simulink environment. The result that obtained from the proposed method is compared with secondary impedance control scheme and the performance parameters such as the torque, power factor and efficiency are obtained. In addition to improving performances, as the proposed method uses only one capacitor in the rotor where as against three capacitors are used in the rotor impedance control scheme. The result has shown improved performance and cost effective by the proposed scheme.

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Section: B) During Time Interval T 2 -Dischargingmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Performance Enhancement of Wound Rotor Induction Motor by VSI with Dynamic Capacitor Controlled Rotor Circuit

kumar¹,

Palaniswami²,

Priyadharsini³

2010

IJCA

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“…6. It was proposed in [6,7] as a solution for power factor compensation in inductive circuits. In this topology, the equivalent capacitance can be written as:…”

Section: Static Switches and Their Controlmentioning

confidence: 99%

A Three-Phase Induction Motor with Power Electronic Controlled Single-Phase Auxiliary Stator Winding

Nicolae

Jimoh

2007

2007 IEEE Power Electronics Specialists Conference

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This paper investigates the use of power electronic controlled static switch capacitor with a single-phase auxiliary winding, which is only magnetically coupled to the stator main winding, for improving the starting and operating power factor of a three-phase induction motor. The scheme improves the power factor of the motor without compromising significantly on other performances. Important advantages of the scheme include preventing harmonics in the line current, and eliminating regeneration possibility, as well as preventing high inrush currents at starting. The main focus of this work is to investigate various static switch topologies and their controls that are most suitable for this application.

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“…In the literature, several techniques to improve the power factor and accordingly the performance of induction machines have been suggested, including the synchronous compensation, fixed capacitors, fixed capacitors with switched inductor, solid-state power factor controller, and switched capacitors [9][10][11][12][13]. A three-phase induction motor equipped with a three-phase auxiliary winding in delta configuration, which is magnetically coupled to the main winding connected in a star configuration, has recently been proposed as well [9][10][11].…”

Section: Introductionmentioning

confidence: 99%

Performance Evaluation of an Induction Machine with Auxiliary Winding for Wind Turbine Power

Habash

Tang

Guillemette³

et al. 2012

ISRN Renewable Energy

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The purpose of this paper is to reinforce with theoretical and experimental evaluation the effectiveness of employing an induction generator to enhance the performance of a small wind energy converter (SWEC). With this generator, the SWEC works more efficiently and therefore can produce more energy in a unit turbine area. To verify the SWEC performance, a model has been proposed, simulated, built, and experimentally tested over a range of operating conditions. The results demonstrate a significant increase in output power with an induction generator that employs an auxiliary winding, which is only magnetically coupled to the stator main winding. It is also shown that the operating performance of the induction machine with the novel proposed technique is significantly enhanced in terms of suppressed signal distortion and harmonics, severity of resistive losses and overheating, power factor, and preventing high inrush current at starting.

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Switched capacitor fuzzy control for power factor correction in inductive circuits

Cited by 13 publications

References 4 publications

Performance Enhancement of Wound Rotor Induction Motor by VSI with Dynamic Capacitor Controlled Rotor Circuit

Performance Enhancement of Wound Rotor Induction Motor by VSI with Dynamic Capacitor Controlled Rotor Circuit

A Three-Phase Induction Motor with Power Electronic Controlled Single-Phase Auxiliary Stator Winding

Performance Evaluation of an Induction Machine with Auxiliary Winding for Wind Turbine Power

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