Improvement of three-phase output voltage waveforms with the combined use of a three-phase and a single-phase inverter

1983 ◽  
Vol 54 (1) ◽  
pp. 109-119 ◽  
Author(s):  
KUNIOMI OGUCHI ◽  
AKIRA NEZU
2012 ◽  
Vol 263-266 ◽  
pp. 803-808
Author(s):  
Hui Cai ◽  
Hong Yan ◽  
Wei Min Chen ◽  
Qing Li

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.


2012 ◽  
Vol 433-440 ◽  
pp. 3728-3733
Author(s):  
Zhen Wang ◽  
Ling Shun Liu

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.


2015 ◽  
Vol 793 ◽  
pp. 315-319
Author(s):  
M. Zhafarina ◽  
M. Irwanto ◽  
A.H. Haziah ◽  
N. Gomesh ◽  
Y.M. Irwan ◽  
...  

Photovoltaic is use to supply electricity from sunlight. Inverter is used to convert the direct current (DC) from photovoltaic to alternating current (AC). This project is to design and develop a single phase inverter that able to invert the input voltage of DC to output voltage of AC using PROTEUS software. The inverter based on 8 bits for one cycle of a driver pulse wave. This simulation used before doing the hardware. This software can save a lot of time on this exact simulation of the prototype.


Author(s):  
Laith A. Mohammed ◽  
Taha A. Husain ◽  
Ahmed M. T. Ibraheem

This paper presents design and practical implementation of single-phase inverter based on selective harmonic elimination-pulse width modulation (SHE-PWM) technique. Microcontroller mega type Arduino used as a controller for producing the gate pulses. The optimized switching angles determination results in wide range of output voltage. Depending on number of switching angles, the lower order harmonics (LOHs) can be eliminated to improve the output voltage waveform. A comparison study using MATLAB/Simulink for sinusoidal-PWM and SHE-PWM techniques, which shows for the same LOH in the output voltage waveform, the SHE-PWM has less number of pulses per half cycle than sinusoidal-PWM strategy. The reduction in number of pulses results less switching losses. The simulation done using ten switching angles to drive R-L load. A prototype of SHE-PWM inverter with R-L load is used to validate the simulation results.


2012 ◽  
Vol 622-623 ◽  
pp. 1514-1518
Author(s):  
Sidshchadhaa Aumted ◽  
Shuta Kanda ◽  
Hiroshi Takami ◽  
Shoji Tatsuno

In this paper, we propose an optimal voltage control for single-phase inverter with resonant LC filter via type-2 ILQ servo-control by 2nd-order polynomial. The improved ILQ control enables to follow the time-variant sinusoidal reference-voltage without phase delay. The excellent voltage control is achieved through the suppression of resonant output voltage.


Sign in / Sign up

Export Citation Format

Share Document