A Microcomputer-Based Control Signal Generator for a Three-Phase Switching Power Inverter

1983 ◽  
Vol IA-19 (2) ◽  
pp. 228-234 ◽  
Author(s):  
Marlen Varnovitsky
Keyword(s):  
Signal Generator ◽  
Control Signal ◽  
Phase Switching ◽  
Switching Power ◽  
Three Phase

scholarly journals Sliding Modes in Three-Phase Switching Power Converters Control.

1993 ◽  
Vol 113 (7) ◽  
pp. 883-890
Author(s):  
Nadira Šabanovic-Behlilovic ◽  
Asif Šabanovic ◽  
Kouhei Ohnishi
Keyword(s):  
Power Converters ◽  
Sliding Modes ◽  
Phase Switching ◽  
Switching Power ◽  
Three Phase ◽  
Switching Power Converters

scholarly journals Power Efficiency Improvement of Three-Phase Split-Output Inverter Using Magnetically Coupled Inductor Switching

Electronics ◽  
2019 ◽  
Vol 8 (9) ◽  
pp. 969
Author(s):  
Yang ◽  
Choi
Keyword(s):  
Power Efficiency ◽  
Dead Time ◽  
Schottky Diodes ◽  
Recovery Process ◽  
Power Losses ◽  
Switching Power ◽  
Three Phase ◽  
Higher Power ◽  
Recovery Problem ◽  
Diode Current

The conventional three-phase split-output inverter (SOI) has been used for grid-connected applications because it does not require dead time and has no shoot-through problems. Recently, the conventional inverter uses the silicon carbide (SiC) schottky diodes for the freewheeling diodes because of its no reverse-recovery problem. Nevertheless, in a practical design, the SiC schottky diodes suffer from current overshoots and voltage oscillations. These overshoots and oscillations result in switching-power losses, decreasing the power efficiency of the inverter. To alleviate this drawback, we present a three-phase SOI using magnetically coupled inductor switching technique. The magnetically coupled inductor switching technique uses one auxiliary diode and coupled inductor for each switching leg in the three-phase SOI. By the operation of the coupled inductor, the main diode current is shifted to the auxiliary diode without the reverse-recovery process. The proposed inverter reduces switching-power losses by alleviating current overshoots and voltage oscillations of SiC schottky diodes. It achieves higher power efficiency than the conventional inverter. We discuss experimental results for a 1.0 kW prototype inverter to verify the performance of the proposed inverter.

The Design and Implementation of High Precision Three-Phase Sine-Wave Signal Generator

2014 ◽  
Vol 543-547 ◽  
pp. 838-841
Author(s):  
Shou Qiang Kang ◽  
Shan Shan Li ◽  
Shi Zheng ◽  
Di Wu
Keyword(s):  
High Precision ◽  
Design Method ◽  
Synthesis Method ◽  
Sine Wave ◽  
Signal Generator ◽  
Lookup Table ◽  
Direct Digital Frequency Synthesis ◽  
Wave Signal ◽  
Design And Implementation ◽  
Three Phase

A design and implementation method of high precision three-phase sine-wave signal generator is proposed based on MCU and FPGA. For the traditional design method, direct analog synthesis method and phase locked loop (PLL) technology are used to design the signal generator. So the function, the precision and other aspects are inadequate. Aiming to the problem, a signal generator is designed based on direct digital frequency synthesis (DDS) technology. The MCU is used to control the peripheral devices and the frequency and phase control word can be obtained. The DDS module is achieved by EP4CE6E22C8 and the waveform lookup table addresses are outputted. The digital three-phase sine-wave data can be read from the lookup table. Through the three-way D/A converter and the amplifier circuit, the digital signal is converted to analog signal and the three-phase sinusoidal wave is outputted. The precision can be improved by increasing the sampling points, phase accumulator bits and D/A bits, and then, high precision three-phase sine-signal can be obtained and the adjustable frequency precision is 0.001.

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