Single-Phase Unified Power Quality Conditioner with Optimum Voltage Angle Injection for Minimum VA requirement

Kisck, Dragos Ovidiu; Navrapescu, Valentin; Kisck, Mariana

doi:10.1109/isie.2007.4374990

Cited by 19 publications

(17 citation statements)

References 10 publications

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“…One of the biggest challenges in inverter grid connection and voltage injection studies is the appearance of harmonic distortion due to the injected voltage and/or current [21]. In order to assess the quality of the line current, total harmonic distortion THD analyses of the line currents are performed both under the compensated and the non-compensated conditions.…”

Section: Simulation Resultsmentioning

confidence: 99%

Effects of a Static Synchronous Series Compensator (SSSC) Based on a Soft Switching 48-Pulse PWM Inverter on the Power Demand from the Grid

Ustun¹,

Mekhilef²

2010

Journal of Power Electronics

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In this paper the effects of a Static Synchronous Series Compensator, which is constructed with a 48-pulse inverter, on the power demand from the grid are studied. Extensive simulation studies were carried out in the MATLAB simulation environment to observe the compensation achieved by the SSSC and its effects on the line voltage, line current, phase angle and real/reactive power. The designed device is simulated in a power system which is comprised of a three phase power source, a transmission line, line inductance and load. The system parameters such as line voltage, line current, reactive power Q and real power P transmissions are observed both when the SSSC is connected to and disconnected from the power system. The motivation for modeling a SSSC from a multi-pulse inverter is to enhance the voltage waveform of the device and this is observed in the total harmonic distortion (THD) analysis performed at the end of the paper. According to the results, the power flow and phase angle can be controlled successfully by the new device through voltage injection. Finally a THD analysis is performed to see the harmonics content. The effect on the quality of the line voltage and current is acceptable according to international standards.

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Section: Simulation Resultsmentioning

confidence: 99%

Effects of a Static Synchronous Series Compensator (SSSC) Based on a Soft Switching 48-Pulse PWM Inverter on the Power Demand from the Grid

Ustun¹,

Mekhilef²

2010

Journal of Power Electronics

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“…In [127], authors have used fault current limiter to reduce the UPQC rating particularly by limiting the excessive current during the event of a fault. Finally, it is found that throughout the development phases of UPQC, researchers have given equal importance to evaluate the control algorithm and overall UPQC system performance by experimental investigation [11], [14], [22], [23], [26], [33], [40], [42], [51], [52], [56], [57], [60], [63], [75], [80], [81], [89], [94], [97], [107], [109], [114], [116]- [118], [120], [129], [143]- [145], [147], [150], [155]- [157], [159], [161], [163], [164], [167], [168]. A 250-kVA UPQC system is developed at the Centre for the Development of Advanced Computing (C-DAC), Thiruvananthapuram, India [75].…”

Section: Control Techniques For Upqcmentioning

confidence: 99%

“…A 250-kVA UPQC system is developed at the Centre for the Development of Advanced Computing (C-DAC), Thiruvananthapuram, India [75]. Additional significant UPQC prototypes and testing at higher power ratings: 20 [14], [42], [63], 15 [145], [164], 12 [117], 10 kVA [89], [114], and so on.…”

Section: Control Techniques For Upqcmentioning

confidence: 99%

Enhancing Electric Power Quality Using UPQC: A Comprehensive Overview

Khadkikar¹

2012

IEEE Trans. Power Electron.

634

275

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This paper presents a comprehensive review on the unified power quality conditioner (UPQC) to enhance the electric power quality at distribution levels. This is intended to present a broad overview on the different possible UPQC system configurations for single-phase (two-wire) and three-phase (three-wire and four-wire) networks, different compensation approaches, and recent developments in the field. It is noticed that several researchers have used different names for the UPQC based on the unique function, task, application, or topology under consideration. Therefore, an acronymic list is developed and presented to highlight the distinguishing feature offered by a particular UPQC. In all 12 acronyms are listed, namely, UPQC-D, UPQC-DG, UPQC-I, UPQC-L, UPQC-MC, UPQC-MD, UPQC-ML, UPQC-P, UPQC-Q, UPQC-R, UPQC-S, and UPQC-VA m in . More than 150 papers on the topic are rigorously studied and meticulously classified to form these acronyms and are discussed in the paper.Index Terms-Active power filter (APF), harmonic compensation, power quality, reactive power compensation, unified power quality conditioner (UPQC), voltage sag and swell compensation.

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“…Most importantly, this coordinated reactive power sharing feature is achieved during normal steady-state condition without affecting the resultant load voltage magnitude. The optimal angle of series voltage injection in UPQC-VA min is computed using lookup table [26], [27] or particle swarm optimization technique [28]. These iterative methods mostly rely on the online load power factor angle estimation, and thus may result into tedious and slower estimation of optimal angle.…”

Section: Introductionmentioning

confidence: 99%

UPQC-S: A Novel Concept of Simultaneous Voltage Sag/Swell and Load Reactive Power Compensations Utilizing Series Inverter of UPQC

Khadkikar¹,

Chandra

2011

IEEE Trans. Power Electron.

218

115

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This paper introduces a new concept of optimal utilization of a unified power quality conditioner (UPQC). The series inverter of UPQC is controlled to perform simultaneous 1) voltage sag/swell compensation and 2) load reactive power sharing with the shunt inverter. The active power control approach is used to compensate voltage sag/swell and is integrated with theory of power angle control (PAC) of UPQC to coordinate the load reactive power between the two inverters. Since the series inverter simultaneously delivers active and reactive powers, this concept is named as UPQC-S (S for complex power). A detailed mathematical analysis, to extend the PAC approach for UPQC-S, is presented in this paper. MATLAB/SIMULINK-based simulation results are discussed to support the developed concept. Finally, the proposed concept is validated with a digital signal processor-based experimental study.Index Terms-Active power filter (APF), power angle control (PAC), power quality, reactive power compensation, unified power quality conditioner (UPQC), voltage sag and swell compensation.

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Single-Phase Unified Power Quality Conditioner with Optimum Voltage Angle Injection for Minimum VA requirement

Cited by 19 publications

References 10 publications

Effects of a Static Synchronous Series Compensator (SSSC) Based on a Soft Switching 48-Pulse PWM Inverter on the Power Demand from the Grid

Effects of a Static Synchronous Series Compensator (SSSC) Based on a Soft Switching 48-Pulse PWM Inverter on the Power Demand from the Grid

Enhancing Electric Power Quality Using UPQC: A Comprehensive Overview

UPQC-S: A Novel Concept of Simultaneous Voltage Sag/Swell and Load Reactive Power Compensations Utilizing Series Inverter of UPQC

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