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

Obais, Abdulkareem Mokif; Pasupuleti, Jagadeesh

doi:10.6113/jpe.2014.14.4.742

Cited by 4 publications

(5 citation statements)

References 30 publications

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“…Figure 3a shows a TCR supplied directly from an AC voltage vAC and fired at an angle α as shown in Figure 3b. According to this firing angle, the TCR fundamental current component I1 can be given by [6][7][8][9]:…”

Section: Figure 2 the Power Circuit Of The Proposed Susceptancementioning

confidence: 99%

“…A TCR equipped with a new adaptive current controller and specific filtering circuits was proposed to automatically correct the power factor of an inductive load, eliminating harmonic injection on the AC source side [9]. The optimal design of new topologies of TSRs was suggested [10] to achieve uniformly distributed Var control in power system networks.…”

Section: Introductionmentioning

confidence: 99%

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An Innovative Linear Susceptance Model Deploying a Thyristor Controlled Reactor with Harmonic Suppression Circuitry and Advanced Current Controller

Obais

2023

MMEP

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The Thyristor Controlled Reactor (TCR), an operative reactive power device, is controlled non-linearly in its inductive operational mode, resulting in injection of odd current harmonics. This introduces challenges regarding power quality, which necessitates conditioning of the device. In this study, the development of a continuously and linearly controlled compensating susceptance, constructed from a TCR equipped with harmonic suppression and absorption features, is presented. The series suppression circuitry incorporated within the design consists of a series RLC circuit, resonating at the frequency of the AC source. Simultaneously, the shunt absorption circuitry is specifically designed to eliminate the third and fifth harmonic current components produced by the TCR. This innovative arrangement substantially minimizes the odd harmonics generated by the TCR. In addition, an advanced current controller has been introduced, allowing the reactive current of the proposed susceptance to be linearly controlled in both inductive and capacitive modes. The proposed susceptance was designed and simulated on PSpice, utilizing a 50Hz, 220V AC source. Simulation results demonstrate that the susceptance current reaches its steady-state value within approximately 100ms. Furthermore, the susceptance current in the steady-state region is almost completely devoid of harmonics. Notably, the proposed susceptance displays remarkable linearity during its response to reactive current demands across both inductive and capacitive operational modes. This research provides a significant step forward in addressing the challenges associated with TCR power quality.

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Section: Figure 2 the Power Circuit Of The Proposed Susceptancementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

An Innovative Linear Susceptance Model Deploying a Thyristor Controlled Reactor with Harmonic Suppression Circuitry and Advanced Current Controller

Obais

2023

MMEP

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“…where, AM is the analogue multiplier gain and Vm is vAC amplitude. The output vS of the summing amplifier is defined by (13).…”

Section: The Statcom Current Controllermentioning

confidence: 99%

“…Using phase shift SPWM, two control loops (phase angle and DC voltage) were exploited to certify the balance of the DC voltages and to calculate parameters of the PI controller. A harmonic free TCR was introduced in [12] as a compensating susceptance controlled linearly and continuously in inductive operational mode, whereas in [13] a TCR equipped with a new current controller and an adaptive filtering scheme was introduced to function as a continuously and linearly controlled capacitive susceptance. Both categories were dedicated for power quality purposes like power factor correction and load balancing.…”

Section: Introductionmentioning

confidence: 99%

Design of a linearized 4-H-bridge STATCOM for load balancing purposes

Obais,

Mukheef

2023

IJPEDS

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<span lang="EN-US">In this paper, a 4-H-bridge STATCOM (4-HB STATCOM) is introduced. Four H-bridges are cascaded to build the proposed STATCOM. Cascading the H-bridges makes it possible to operate the devised STATCOM on high voltage levels with less voltage harmonic association. The proposed STATCOM is equipped with an adaptive current controller and a voltage balancing technique for its DC capacitor voltages. The adopted controlling strategy makes the STATCOM respond continuously and linearly to current demand in both inductive and capacitive operational modes without noticeable association of harmonics. The DC capacitor of each H-bridge is shunted by a second harmonic filter to stabilize its voltage. The proposed STATCOM does not require initial charging of its DC capacitors because it is provided with a utilized technique for charging them rapidly by disabling the STATCOM carrier for a certain period sufficient to build up the required level of DC voltages. In this work, the proposed STATCOM is designed to operate on 11 kV AC voltage as a continuously and linearly controlled compensating susceptance. It can deservingly be employed in load balancing systems for achieving big amount of energy savings in power generation and big reduction in transmission losses.</span>

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“…Today, power switching converters are widely used in many applications such as fuel cells [1], LED drivers [2], power factor correction [3] and photovoltaic systems [4]. Among the various switching converters, the flyback topology is widely used in electronic systems due to its benefits such as isolation and a simple structure.…”

Section: Introductionmentioning

confidence: 99%

A ZCT Double-Ended Flyback Converter with Low EMI

Yazdani¹,

Rahmani²,

Mohammadi³

2015

Journal of Power Electronics

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In this paper, a zero current transition (ZCT) double-ended flyback converter is proposed. All of the switching elements act under soft switching conditions and the voltage stress of the main switches is limited to the input voltage due to the innate behavior of the double-ended flyback converter. Providing soft switching conditions and clamping the voltage stress improves the efficiency and electromagnetic compatibility (EMC). The Proposed converter is analyzed in detail and its operating modes are discussed in detail. Experimental results are presented to verify the theoretical predictions. Moreover, the conducted electromagnetic emissions of the proposed ZCT double-ended flyback converter are measured to show another merit of the proposed converter in addition to providing soft switching conditions. The measured electromagnetic interference (EMI) of the proposed converter demonstrates that its EMI is lower than the conventional double-ended flyback converter. Furthermore, two simple and cost effective EMI reduction methods are applied to satisfy the EMC standard.

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

Cited by 4 publications

References 30 publications

An Innovative Linear Susceptance Model Deploying a Thyristor Controlled Reactor with Harmonic Suppression Circuitry and Advanced Current Controller

An Innovative Linear Susceptance Model Deploying a Thyristor Controlled Reactor with Harmonic Suppression Circuitry and Advanced Current Controller

Design of a linearized 4-H-bridge STATCOM for load balancing purposes

A ZCT Double-Ended Flyback Converter with Low EMI

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