A microprocessor-based adaptive power factor corrector for nonlinear loads

EL-Bolok, Hatem; Masoud, Mohamed; Mahmoud, M. A.

doi:10.1109/41.45846

Cited by 9 publications

(5 citation statements)

References 3 publications

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“…This time is very small when compared to those achieved by the phase shift current controller in [2], the microprocessor based power factor controller in [4], the hysteresis current controller depicted in [5], and the SVC current controller with a Fuzzy ranking system in [7]. For instance, the steady state performance time for the hysteresis current controller [5] is about one second.…”

Section: B Steady State Performancementioning

confidence: 92%

Automatic Power Factor Correction Using a Harmonic-Suppressed TCR Equipped with a New Adaptive Current Controller

Obais

Pasupuleti²

2014

Journal of Power Electronics

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In this paper, a new continuously and linearly controlled capacitive static VAR compensator is proposed for the automatic power factor correction of inductive single phase loads in 220V 50Hz power system networks. The compensator is constructed of a harmonic-suppressed TCR equipped with a new adaptive current controller. The harmonic-suppressed TCR is a new configuration that includes a thyristor controlled reactor (TCR) shunted by a passive third harmonic filter. In addition, the parallel configuration is connected to an AC source via a series first harmonic filter. The harmonic-suppressed TCR is designed so that negligible harmonic current components are injected into the AC source. The compensator is equipped with a new adaptive closed loop current controller, which responds linearly to reactive current demands. The no load operating losses of this compensator are negligible when compared to its capacitive reactive current rating. The proposed system is validated on PSpice which is very close in terms of performance to real hardware.

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Section: B Steady State Performancementioning

confidence: 92%

Automatic Power Factor Correction Using a Harmonic-Suppressed TCR Equipped with a New Adaptive Current Controller

Obais

Pasupuleti²

2014

Journal of Power Electronics

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“…In power systems, wasted energy capacity, also known as poor power factor, is often overlooked. It can result in poor reliability, safety problems and higher energy costs [2]. The lower your power factor, the less economically your system operates.…”

Section: Definition 1) Power Factormentioning

confidence: 99%

“…This undesirable characteristic places an undue burden on the power network [1].So it is essential to maintain the Power factor with in a limit. Automatic Power factor correction device reads the power factor from line voltage and line current [2], calculating the compensation requirement; switch on different capacitor banks automatically by use of the microcontroller [3] [4]. A poor power factor can be the result of a significant phase difference between the voltage and current at the load terminals.…”

Section: Introductionmentioning

confidence: 99%

Automatic Power factor Compensation Using Microcontroller

Venkatesan¹

2018

IJRASET

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In the present technological and industrial revolution, electrical power is more essential and very precious. So we need to find out the causes of power loss and improve the efficiency of the power system by reducing it. Due to industrialization the use of inductive load has increased and hence power systems had loosed its efficiency. So we need to improve the power factor with a suitable method. Automatic power factor correction device reads the power factor from line voltage and line current by determining the delay in the arrival of the current signal with respect to voltage signal from the AC mains with high accuracy by using an internal timer. This time values are then calibrated as phase angle and corresponding power factor. Then the microcontroller calculates the compensation requirement and accordingly switches on different capacitor banks. Automatic power factor correction techniques can be applied to the IT industries, power systems and also house-holds to make them stable and due to that the system becomes stable and increases the efficiency of the system.

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“…Reactive current control through SVC considering load power factor discussed in [2]. SVC control system is implemented in [3]. FACTS devices like SVC can supply or absorb the reactive power in the transmission line, which helps in achieving better economy of power transfer Shunt controllers inject current into the system at the point where they are connected.…”

Section: Introductionmentioning

confidence: 99%

“…In this work FPGA base digital firing scheme is implemented to achieve the better control. The advantages of digital controllers are less external passive components, less sensitive to temperature variation, high efficiencyand reconfigurability.The micro-processor based control schemeused in [3] have the advantages of flexibility, higher reliability and lower cost, but the demanding control requirements of modern power conditioning systems will overload most general purpose micro-processors and the computing speed of microprocessor limits the use of microprocessor in complex algorithms. Digital Signal Processors (DSPs) and Microcontrollers are used for digital control applications.…”

Section: Introductionmentioning

confidence: 99%

Digital Control of Static Var Compensator with Field Programmable Gate Array

Dhekekar¹,

Srikanth²

2012

IJRES

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This paper is about real time simulation and implementation of FPGA Digital Control of Static VAR compensator for 750km lab model of artificial transmission line. In this paper, a new method of controlling SVC using Field Programmable Gate Array (FPGA) is suggested. FPGA controller is used to generate the firing pulses required to for Static Var Compensator. Pulses are synchronized with AC input; the delay of pulses determines the firing angle to driver circuit. The proposed control scheme has been realized using XILINX FPGA SPARTAN 2 XC2S200 and tested actual testing proves that these devices when installed, they keep the bus voltage same as reference voltage (sending-end voltage). The results are prominent and give a way for real-time implementation of the proposed control schemes. These control schemes are simulated for the real-time control along with real-time modeling and simulations.The results are prominent and give a way for real-time implementation

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A microprocessor-based adaptive power factor corrector for nonlinear loads

Cited by 9 publications

References 3 publications

Automatic Power Factor Correction Using a Harmonic-Suppressed TCR Equipped with a New Adaptive Current Controller

Automatic Power Factor Correction Using a Harmonic-Suppressed TCR Equipped with a New Adaptive Current Controller

Automatic Power factor Compensation Using Microcontroller

Digital Control of Static Var Compensator with Field Programmable Gate Array

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