scholarly journals Direct Power-Based Three-Phase Matrix Rectifier Control with Input Power Factor Adjustment

Electronics ◽  
2019 ◽  
Vol 8 (12) ◽  
pp. 1427 ◽  
Author(s):  
Jae-Chang Kim ◽  
Dongyeon Kim ◽  
Sang-Shin Kwak
Keyword(s):  
Power Factor ◽  
Reactive Power ◽  
Current Source ◽  
Input Power ◽  
Control Technique ◽  
Unity Power Factor ◽  
Light Load ◽  
Active And Reactive Power ◽  
The Given ◽  
Power Factor Control

In a current source rectifier such as a matrix rectifier, input voltage and current cannot be in phase unless an additional input power factor control technique is implemented. This paper proposes such a technique for a matrix rectifier using power-based space vector modulation (SVM). In the proposed method, the modulation index and phase required in order to apply the SVM are calculated based on the active and reactive power of the rectifier for intuitive power factor control. The active power that the rectifier should generate for the regulation of the output inductor current is obtained by the PI (proportional-integral) controller. The reactive power, which is supplied by the rectifier for adjustment of the power factor, is assigned differently depending on the output condition: for the output condition capable of unity power factor, it is set to a negative value of reactive power of the input capacitor, and when the unity power factor is not achievable, it is set with the maximum reactive power the rectifier can generate under the given condition to attain the maximum possible input power factor. It is determined whether the given condition is the light load condition by comparing the absolute value of the reactive power supplied by the input capacitor with the maximum rectifier reactive power that can be produced under the given condition. The SVM based on the active and reactive power of the rectifier in this technique allows the input power factor control to be intuitive and simple. The performance and feasibility of the technique were proved by simulation and experimentation.

scholarly journals Modelling of three phase SVPWM AC-AC converter using unity power factor control

2019 ◽  
Vol 10 (4) ◽  
pp. 1823
Author(s):  
Saidah Saidah ◽  
Hari Sutiksno ◽  
Bambang Purwahyudi ◽  
Taufik Taufik
Keyword(s):  
Power Factor ◽  
Pulse Width Modulation ◽  
High Efficiency ◽  
Input Voltage ◽  
Input Power ◽  
Current Waveform ◽  
Unity Power Factor ◽  
Dc Voltage ◽  
Three Phase ◽  
Power Factor Control

This paper introduces the modelling of a novel three phase AC-AC converter with indirect use of a capacitor as DC voltage link. The proposed converter has high efficiency because it uses Space Vector PWM (SVPWM) technique at both rectificier and inverter stages to operate the pulse width modulation in IGBT switches. The novel converter is equipped with a power factor control to shape the rectifier input current waveform to be sinusoidal and to be in phase with the input voltage. To keep the DC voltage stable, the converter utilizes PI controllers. Simulations are conducted for output voltage from 120 to 300 Volts with output frequency ranging from 30 Hz to 60 Hz. The simulation results show that the converter is able to maintain stable the DC voltage and current. Furthermore, the model demonstrates the benefits of proposed converter in terms of acquiring high input power factor and sinusoidal current waveform at the output side of the inverter.

Unity power factor control of permanent magnet synchronous motor by using open winding configuration

2020 ◽  
Vol 64 (1-4) ◽  
pp. 1295-1303
Author(s):  
Dezhi Chen ◽  
Chengwu Diao ◽  
Zhiyu Feng ◽  
Shichong Zhang ◽  
Wenliang Zhao
Keyword(s):  
Permanent Magnet ◽  
Power Factor ◽  
Reactive Power ◽  
Permanent Magnet Synchronous Motor ◽  
Synchronous Motor ◽  
Unity Power Factor ◽  
Collaborative Simulation ◽  
Terminal Voltage ◽  
Vector Modulation ◽  
Power Factor Control

This paper presents the performance of open-winding permanent magnet synchronous motor (OW-PMSM). It mainly includes vector modulation technology considering the unity power factor control.And a topology structure is proposed to optimize the fault tolerance of inverter. Matlab software and Maxwell software collaborative simulation are supplied to obtain the reactive power, speed, terminal voltage, electromagnetic torque etc. under normal and fault status. Finally, the simulation results of an open-winding permanent magnet synchronous motor are verified by the experimental results.

scholarly journals Photovoltaic powered transormerless hybrid converter with active filter for harmonic and reactive power compensation

2018 ◽  
Vol 16 (2) ◽  
pp. 44-51 ◽  
Author(s):  
R. Arulmurugan
Keyword(s):  
Power Quality ◽  
Power Factor ◽  
Reactive Power ◽  
Active Filter ◽  
Control Technique ◽  
Unity Power Factor ◽  
Nonlinear Loads ◽  
Control Framework ◽  
Transformer Power ◽  
Coupling Point

This paper proposed a Transformer less Hybrid SEries Active Filter (THSeAF) that upgrade the power quality in single-stage frameworks with steady renewable Photo Voltaic (PV) supply. It strengthens basic loads and carrying on as high-consonant impedance that does not below the critical loads, it cleans power system and guarantees the utilization of unity power factor. Here we manages energy management and power quality issues identified with electric transportation and concentrate on enhancing the electric vehicle load connected to grid. This depends on the Power Factor Correction (PFC) change with harmonic modulation technique that will give advancement of power factor in PFC operation. The control technique was intended to anticipation of current harmonic distortions with the nonlinear loads to control the flow of utility with no standard massive and expensive transformer. Power factor alongside AC side will likewise kept up to some esteem and furthermore dispense with the voltage distortions at the Common coupling point. Here we protecting sensitive loads from voltage twists, swells and sags as for control framework, without the arrangement transformer it is worthwhile for a modern usage. This paper was done with 2-kVA control showing the adequacy of the current topology.

scholarly journals Hybrid Reference Current Generation Theory for Solar Fed UPFC System

Energies ◽  
2021 ◽  
Vol 14 (6) ◽  
pp. 1527
Author(s):  
R. Senthil Kumar ◽  
K. Mohana Sundaram ◽  
K. S. Tamilselvan
Keyword(s):  
Neural Network ◽  
Power Factor ◽  
Reactive Power ◽  
Voltage Source ◽  
Unity Power Factor ◽  
Current Generation ◽  
Load Voltage ◽  
Reference Current Generation ◽  
Source Current

The extensive usage of power electronic components creates harmonics in the voltage and current, because of which, the quality of delivered power gets affected. Therefore, it is essential to improve the quality of power, as we reveal in this paper. The problems of load voltage, source current, and power factors are mitigated by utilizing the unified power flow controller (UPFC), in which a combination of series and shunt converters are combined through a DC-link capacitor. To retain the link voltage and to maximize the delivered power, a PV module is introduced with a high gain converter, named the switched clamped diode boost (SCDB) converter, in which the grey wolf optimization (GWO) algorithm is instigated for tracking the maximum power. To retain the link-voltage of the capacitor, the artificial neural network (ANN) is implemented. A proper control of UPFC is highly essential, which is achieved by the reference current generation with the aid of a hybrid algorithm. A genetic algorithm, hybridized with the radial basis function neural network (RBFNN), is utilized for the generation of a switching sequence, and the generated pulse has been given to both the series and shunt converters through the PWM generator. Thus, the source current and load voltage harmonics are mitigated with reactive power compensation, which results in attaining a unity power factor. The projected methodology is simulated by MATLAB and it is perceived that the total harmonic distortion (THD) of 0.84% is attained, with almost a unity power factor, and this is validated with FPGA Spartan 6E hardware.

Input power factor control of AC-DC series resonant DC link converter using PID operation

1996 ◽  
Vol 11 (1) ◽  
pp. 43-48 ◽  
Author(s):  
H. Soebagia ◽  
M. Yoshida ◽  
Y. Murai ◽  
T.A. Lipo
Keyword(s):  
Power Factor ◽  
Input Power ◽  
Series Resonant ◽  
Power Factor Control

scholarly journals Voltage Rise Regulation with a Grid Connected Solar Photovoltaic System

Energies ◽  
2021 ◽  
Vol 14 (22) ◽  
pp. 7510
Author(s):  
Akinyemi Ayodeji Stephen ◽  
Kabeya Musasa ◽  
Innocent Ewean Davidson
Keyword(s):  
Power Quality ◽  
Power Factor ◽  
Reactive Power ◽  
Voltage Regulation ◽  
Photovoltaic System ◽  
Voltage Amplitude ◽  
Phase Voltage ◽  
Unity Power Factor ◽  
Voltage Rise ◽  
Grid Current

Renewable Distributed Generation (RDG), when connected to a Distribution Network (DN), suffers from power quality issues because of the distorted currents drawn from the loads connected to the network over generation of active power injection at the Point of Common Coupling (PCC). This research paper presents the voltage rise regulation strategy at the PCC to enhance power quality and continuous operation of RDG, such as Photovoltaic Arrays (PVAs) connected to a DN. If the PCC voltage is not regulated, the penetration levels of the renewable energy integration to a DN will be limited or may be ultimately disconnected in the case of a voltage rise issue. The network is maintained in both unity power factor and voltage regulation mode, depending on the condition of the voltage fluctuation occurrences at the PCC. The research investigation shows that variation in the consumer’s loads (reduction) causes an increase in the power generated from the PVA, resulting in an increase in the grid current amplitude, reduction in the voltage of the feeder impedance and an increase in the phase voltage amplitude at the PCC. When the system is undergoing unity power factor mode, PCC voltage amplitude tends to rises with the loads. Its phase voltage amplitude rises above an acceptable range with no-loads which are not in agreement, as specified in the IEEE-1547 and Southern Africa grid code prerequisite. Incremental Conduction with Integral Regulator bases (IC + PI) are employed to access and regulate PVA generation, while the unwanted grid current distortions are attenuated from the network using an in-loop second order integral filtering circuit algorithm. Hence, the voltage rise at the PCC is mitigated through the generation of positive reactive power to the grid from the Distribution Static Compensator (DSTATCOM), thereby regulating the phase voltage. The simulation study is carried out in a MATLAB/Simulink environment for PVA performance.

A Novel Power-Factor Control Technique of Power Supply for Mining Systems

2020 ◽  
Vol 25 (1) ◽  
pp. 15-22
Author(s):  
Dong-Yun Lee ◽  
Won-Yeop Seok ◽  
Min-Whan Choi ◽  
Sang-Ho Park ◽  
Jin-Ho Hwang ◽  
...  
Keyword(s):  
Power Factor ◽  
Power Supply ◽  
Control Technique ◽  
Power Factor Control
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