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.

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.

Design of an IDC Power Three-Phase Equilibrium Distribution Soft-Switching System

2013 ◽  
Vol 427-429 ◽  
pp. 721-724
Author(s):  
Yan Hong ◽  
Cai Hui ◽  
Wei Min Chen ◽  
Li Qing
Keyword(s):  
Phase Equilibrium ◽  
Equilibrium Distribution ◽  
Electric Energy ◽  
Soft Switching ◽  
Switching System ◽  
Three Phase ◽  
Electric Equipment ◽  
The Cost ◽  
Impulse Current

To decrease the cost brought by the electric energy waste, a three-phase equilibrium distribution soft-switching system is proposed. The system guarantees three-phase equilibrium. Firstly, the inverter tracks the original access phase to be synchronous, then switch the electric equipment to the inverter. Secondly, the inverter tracks the alternative access phase to be synchronous, then switch the electric equipment to the alternative access phase to accomplish the soft-switching. Experiment is used to carry out verification for this system. The result shows that there is no impulse current when the electric equipment switches. The system achieves soft-switching.

Analysis, design and performance of a soft‐switching single‐phase inverter

2014 ◽  
Vol 7 (9) ◽  
pp. 2412-2423 ◽  
Author(s):  
Chien‐Ming Wang ◽  
Chang‐Hua Lin ◽  
Hsin‐Yi Lin ◽  
Shih‐Yung Hsu
Keyword(s):  
Single Phase ◽  
Soft Switching ◽  
Phase Inverter ◽  
Analysis Design ◽  
Single Phase Inverter ◽  
And Performance
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