Analysis of the Influence of Error Amplifier Factors on Total Harmonic Distortion of Converter Input Current

2021 ◽  
Author(s):  
Yury Skorokhod ◽  
Dmitriy Sorokin ◽  
Sergey Volskiy
Keyword(s):  
Harmonic Distortion ◽  
Total Harmonic Distortion ◽  
Input Current ◽  
Error Amplifier

Study of the Influence of Control System Parameters on the Quality of the Input Current of a Three-Phase Power Factor Corrector

2021 ◽  
Vol 2 (2) ◽  
pp. 29-35
Author(s):  
Dmitry A. Sorokin ◽  
◽  
Sergey I. Volskiy ◽  
Jaroslav Dragoun ◽  
◽  
...  
Keyword(s):  
Control System ◽  
Power Factor ◽  
Harmonic Distortion ◽  
Total Harmonic Distortion ◽  
Input Current ◽  
System Operation ◽  
Error Amplifier ◽  
Three Phase ◽  
Power Factor Corrector

The paper suggests a control system of a three-phase power factor corrector. The study of the control system operation is carried out and the expressions for calculating the permissible values of error amplifier factors are obtained. The influence of the error amplifier parameters on phase current quality is investigated. The dependence of total harmonic distortion input current on a combination of error amplifier parameters is obtained at a given value of power factor. The conditions under which the total harmonic distortion input current has the minimum value are found out. This article is of interest to power electronics engineers, who are aimed at developing a three-phase power factor corrector.

scholarly journals Investigating the Performances of Direct Torque and Flux Control for Dual Stator Induction Motor with Direct and Indirect Matrix Converter

2019 ◽  
Vol 64 (1) ◽  
pp. 97-105
Author(s):  
Yahia Moati ◽  
Katia Kouzi
Keyword(s):  
Induction Motor ◽  
High Performance ◽  
Direct Torque Control ◽  
Harmonic Distortion ◽  
Matrix Converter ◽  
Operating Conditions ◽  
Torque Control ◽  
Total Harmonic Distortion ◽  
Input Current ◽  
Matlab Simulink

This work investigates the performances of Direct Torque Control (DTC) of Dual Stator Induction Motor (DSIM) powered by two types of Matrix Converter (MC), namely the direct and indirect MC. To this end, the design of DTC with conventional Direct Matrix Converter (DMC) is firstly presented. Then, in order to illustrate the main feature of Indirect Matrix Converter (IMC) in terms of the output voltages and input currents waveforms, the full steps of IMC are well explained. To discuss the performance of each scheme, both techniques are simulated in the Matlab / Simulink environment for a 4.5 kW DSIM at different operating conditions. The obtained results show that the IMC provides high performance in torque and flux at different conditions and while minimization the Total Harmonic Distortion (THD) in the input current compared by the conventional DMC.

scholarly journals A Three-Level Universal Electric Vehicle Charger Based on Voltage-Oriented Control and Pulse-Width Modulation

Energies ◽  
2019 ◽  
Vol 12 (12) ◽  
pp. 2375 ◽  
Author(s):  
Ali Saadon Al-Ogaili ◽  
Ishak Bin Aris ◽  
Renuga Verayiah ◽  
Agileswari Ramasamy ◽  
Marayati Marsadek ◽  
...  
Keyword(s):  
Digital Signal Processor ◽  
Distribution System ◽  
Pulse Width ◽  
Pulse Width Modulation ◽  
Harmonic Distortion ◽  
Total Harmonic Distortion ◽  
Input Current ◽  
Special Focus ◽  
Renewable Energy Resources ◽  
Battery Charging

Electric vehicles (EVs) could be used to address the issues of environmental pollution and the depletion of non-renewable energy resources. EVs, which are energized by a battery storage system, are becoming attractive because they keep the environment clean. Furthermore, the cost of EVs is becoming cheaper. Thus, EVs will become a significant load on utility distribution system in the future. EV chargers play a significant role in the expansion of EVs. The input current of an EV charger with a high total harmonic distortion (THD) and a high ripple distortion of the output voltage can impact battery life and battery charging time. Furthermore, the high cost and large size of the chargers are considered other issues in EV development. This work presents the complete design process of a universal EV charger with a special focus on its control algorithms. In this regard, a novel control algorithm based on the integration of voltage-oriented control (VOC) and the sinusoidal pulse-width modulation (SPWM) technique is proposed to ensure effective Levels 1, 2, and 3 battery charging. A simulation of the universal EV charger was conducted and assessed in MATLAB–Simulink. Moreover, a laboratory prototype was constructed with a TMS320F28335 digital signal processor (DSP) programmed as the controller to validate its operation and performance. The findings show that the proposed charger is able to provide a controllable and constant charging voltage for a variety of EVs, with an input current of low total harmonic distortion (THD) and an almost unity power factor.

scholarly journals Boundary Conduction Mode Modified Buck Converter with Low Input Current Total Harmonic Distortion

2019 ◽  
Vol 12 (17) ◽  
pp. 1-10
Author(s):  
A. Hakeem Memon ◽  
Zubair A. Memon ◽  
Noor N. Sheikh ◽  
Anwar A. Sahito ◽  
Ashfaque A. Hashmani ◽  
...  
Keyword(s):  
Harmonic Distortion ◽  
Buck Converter ◽  
Total Harmonic Distortion ◽  
Input Current ◽  
Low Input ◽  
Conduction Mode ◽  
Boundary Conduction

Multi-parameter mathematical model for determination of PC cluster total harmonic distortion of input current

2016 ◽  
Vol 35 (1) ◽  
pp. 305-325 ◽  
Author(s):  
Sasa Mujovic ◽  
Slobodan Djukanovic ◽  
Vladan Radulovic ◽  
Vladimir A. Katic
Keyword(s):  
Mathematical Model ◽  
Power Supply ◽  
Cluster Size ◽  
Harmonic Distortion ◽  
Engineering Application ◽  
Total Harmonic Distortion ◽  
Input Current ◽  
Content Type ◽  
Pc Cluster ◽  
Proposed Model

Purpose – Low power devices with switched-mode power supply represent harmonic generating apparatus in widespread use nowadays. The influence of personal computers (PCs), which affect the supply voltage, is considered. Harmonic level due to simultaneous PC operation is quantified by the total harmonic distortion of input current (THD I ). The purpose of this paper is to propose a multi-parameter mathematical model for the THD I calculation. The model is convenient for practical engineering application. Design/methodology/approach – The model is derived using the measured and simulated data. The model coefficients are obtained in the least squares sense. Findings – Mathematical modeling of THD I is the least expensive and the most convenient solution for engineering application. The models proposed in the literature have many drawbacks, which motivated the authors to develop a more comprehensive solution. Grid stiffness, capacitance of PC power supply unit and PC cluster size represent the major parameters that affect THD I , and as such they are taken into account in the proposed model. The influence of other existing parameters from both line and load side is also discussed and the reasons for their omitting from the model are explained. The model considers various PC configurations within the cluster and it enables the THD I calculation for an arbitrary PC cluster size. Practical implications – Due to its comprehensiveness and mathematical simplicity, the model is suitable for practical use, and its accuracy is verified through conducted measurements presented in the paper. Originality/value – The proposed model is more comprehensive than the existing ones, and it overcomes their shortcomings. The THD I calculation is simplified to the level of applying basic arithmetic operations only, without jeopardizing the accuracy. The validity of the model is supported by additional measurements carried out in sites characterized by grid conditions quite different from that used for model developing.

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