Design Of Inverter Power Supply

Power technology is a power semiconductor device applications, the integrated power conversion technology, modern electronic technology, automatic control technology multidisciplinary cross-edge technology. With the development of science and technology, with the power of modern technology and control theory, materials science, electrical engineering, microelectronic technology and many other areas are closely linked.The combination of Japan Ltd. for the development of the three-phase design AC150V, 450HZ input, 220V, 50/60HZ single-phase sine wave output of the abrupt power design projects rely on the work against sinusoidal wave principles, and methods to control the export recovery, and other issues studied. Judging focused on the power of the operating principles of research, and from the control strategies, filters improve with the perspective of the abrupt power dynamic export performance, and enhance the prestige power produced precision, while improving the output voltage sine degrees, reducing the output voltage harmonics content. Experimental validation of data through large main circuit, the control parameters, filter design.System using high frequency change, the use of SPWM preparation principles, and achieve AC — DC — AC conversion;Using technology to achieve voltage feedback loop control;At the same time it is imported lower Voltage protection, export Overload, exporting short circuit protection, Over circuit;also, in light of the need to achieve single / three-phase (three/single-phase) conversion or three-phase asymmetry export. As a high degree of integration and smart power module dedicated chip SA4828 and PS21865, its master degrees higher from a certain extent reduced circuit complexity, but also reduce the volume of high-performance small size can be said to be a power thing. Testing and practical application has shown that the power of small size, good performance, low price, high reliability, and the output waveform good performance to meet requirements.