Effect of Maximum Voltage Angle on Inverter Performance Applied in Uninterrupted Power Supply (UPS)

2015 ◽  
Vol 793 ◽  
pp. 304-308
Author(s):  
Mahrizal Masri ◽  
R. Badlisha ◽  
Muhamad Irwanto ◽  
N. Gomesh ◽  
Y.M. Irwan ◽  
...  
Keyword(s):  
Power Supply ◽  
Single Phase ◽  
Negative Impact ◽  
Harmonic Distortion ◽  
Power Source ◽  
Phase Inverter ◽  
Uninterrupted Power Supply ◽  
Aquarium Water ◽  
Single Phase Inverter ◽  
Maximum Voltage

Uninterrupted power supply (UPS) sits between a power supply such as wall outlet and devices to prevent undesired feature that can occur within the power source such as outages, sags, surges and bad harmonics from the supply to avoid a negative impact on the devices. This paper presents a photovoltaic (PV) powered UPS using microcontroller PIC16F628A-I/P. It is a standby UPS whereas if the main power source fails to supply power to loads, a battery powered inverter turns on to continue supplying power. The battery is charged by the PV using solar charger and transfer switch controlled by the microcontroller. In this research, AC three-level waveform single phase inverter was developed and created by a microcontroller PIC16F627A-I/P with varied maximum voltage angle from 200 to 1800 and tested to a load of 240 V, 20 W AC aquarium water pump, and also analyzed effect of maximum voltage angle on the three-level single phase inverter performance. The result showed that maximum voltage angles of the inverter effected on root mean square value of AC voltage, current and power. If the maximum voltage angle was increased, therefore value of the AC voltage, current and power would increase. The maximum voltage angle would effect on the current total harmonic distortion (CTHD), the lowest CTHD of 15.448% was obtained when the maximum voltage angle was 1340.

Single Phase Inverter System using Proportional Resonant Current Control

2017 ◽  
Vol 8 (4) ◽  
pp. 1913
Author(s):  
K.C. Chen ◽  
S. Salimin ◽  
S. A. Zulkifli ◽  
R. Aziz
Keyword(s):  
Single Phase ◽  
Harmonic Distortion ◽  
Harmonic Spectrum ◽  
Current Control ◽  
Nonlinear Load ◽  
Pass Filter ◽  
Low Pass Filter ◽  
Phase Inverter ◽  
Current Controller ◽  
Single Phase Inverter

<span>This paper presents the harmonic reduction performance of proportional resonant (PR) current controller in single phase inverter system connected to nonlinear load. In the study, proportional resonant current controller and low pass filter is discussed to eliminate low order harmonics injection in single phase inverter system. The potential of nonlinear load in producing harmonics is showed and identified by developing a nonlinear load model using a full bridge rectifier circuit. The modelling and simulation is done in MATLAB Simulink while harmonic spectrum results are obtained using Fast Fourier Transfor. End result show PR current controller capability to overcome the injection of current harmonic problems thus improved the overall total harmonic distortion (THD).</span>

The Design of a 150V/50Hz High-Quality Single-Phase Inverter Based on TMS320LF2407A

2012 ◽  
Vol 433-440 ◽  
pp. 3728-3733
Author(s):  
Zhen Wang ◽  
Ling Shun Liu
Keyword(s):  
Power Supply ◽  
Output Voltage ◽  
Single Phase ◽  
Control Method ◽  
Power Module ◽  
High Quality ◽  
Phase Inverter ◽  
Single Phase Inverter ◽  
Intelligent Power Module ◽  
The Stability

According to the requirement of a missile’s power supply, a 150V/50Hz high-quality single-phase inverter has been developed, and the CPU is TMS320LF2407A, and the main circuit is full-bridge inverter intelligent power module (IPM), and SPWM control method has been used too. The stability and the accuracy of the output voltage of this power supply have been improved because of the use of the digital PID regulator. The results of experiments show that the power supply has the advantages of the simple-circuit, the high-quality output-waveform, the high-stability output-voltage and so on.

A New Structure of Quasi Z-Source-Based Cascaded Multilevel Inverter

2017 ◽  
Vol 26 (12) ◽  
pp. 1750203 ◽  
Author(s):  
Ebrahim Babaei ◽  
Mohammad Shadnam Zarbil ◽  
Mehran Sabahi
Keyword(s):  
Output Voltage ◽  
Single Phase ◽  
Harmonic Distortion ◽  
Power Source ◽  
Voltage Source ◽  
Basic Unit ◽  
Dc Voltage ◽  
Multilevel Inverters ◽  
Single Phase Inverter ◽  
Cascaded Multilevel Inverter

In this paper, a new topology for cascaded multilevel inverters based on quasi Z-source converter is proposed. In the proposed topology, the magnitude of output voltage is not limited to dc voltage source, while the magnitude of output voltage of conventional cascaded multilevel inverters is limited to dc voltage source. In the proposed topology, the magnitude of output voltage can be increased by controlling the duty cycle of shoot-through (ST) state, transformer turn ratio, and the number of switched inductors in the Z-source network. As a result, there is no need for extra dc–dc converter. In the proposed topology, the total harmonic distortion (THD) is decreased in comparison with the conventional Z-source inverters. The proposed topology directly delivers power from a power source to load. In addition, in the proposed basic unit, higher voltage gain is achieved in higher modulation index which is an advantage for the proposed base unit. The performance of the proposed topology is verified by the experimental results of five-level single-phase inverter.

Design of a Balanced Three-Phase Power Supply Soft-Switching Based on Single-Phase Inverter Power

2012 ◽  
Vol 263-266 ◽  
pp. 803-808
Author(s):  
Hui Cai ◽  
Hong Yan ◽  
Wei Min Chen ◽  
Qing Li
Keyword(s):  
Power Supply ◽  
Output Voltage ◽  
Single Phase ◽  
Soft Switching ◽  
Negative Effects ◽  
Phase Inverter ◽  
Three Phase ◽  
Electric Equipment ◽  
Single Phase Inverter ◽  
Impulse Current

To eliminate the negative effects caused by three-phase unbalanced distribution, a novel soft-switching system based on single-phase inverter is proposed. The system achieves three-phase equilibrium distribution by adjusting the power supply of the electric equipments. This paper presents a track strategy named regulating frequency to promise no impulse current, which means regulating the output frequency of the inverter to make the output voltage of the inverter synchronize with the grid voltage. Firstly, make the output voltage of the inverter synchronize with the voltage of original access phase, then switch the electric equipment to the inverter. Secondly, make the output voltage of the inverter synchronize with the voltage of alternative access phase, then switch the electric equipment to the alternative access phase to accomplish the soft-switching. MATLAB software and experiment are used to carry out verification for this system. The result shows that the impulse current is practically zero when the electric equipments are switching. The system achieves soft-switching.

scholarly journals Adaptive proportional integral controller based on ann for dc link voltage control single-phase inverter connected to grid

2021 ◽  
Vol 2 (2) ◽  
pp. C20A22-1-C20A22-6
Author(s):  
Mamadou Traore ◽  
◽  
Alphousseyni Ndiaye ◽  
Amadou Ba ◽  
Senghane Mbodji ◽  
...  
Keyword(s):  
Neural Networks ◽  
Single Phase ◽  
Harmonic Distortion ◽  
Pv System ◽  
Phase Inverter ◽  
Proportional Integral ◽  
Integral Controller ◽  
Proportional Integral Controller ◽  
Simulation Results ◽  
Single Phase Inverter

The output power of the inverter of a PV system is directly affected by the DC-link voltage. Hence an adaptive Proportional Integral controller based on Artificial Neural Networks is developed in this paper. MATLAB/Simulink is used for the simulation of the studied system in order to evaluate the performance of the proposed methods. Simulation results show that the proposed API-ANN is faster to track the DC-link voltage than the conventional method. The injected harmonics to the grid were significantly reduced with API-ANN (0.08 % of total harmonic distortion) in comparison with the classic PI with 4.23 %. The API-ANN gives a good performance than the classic PI.

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