Abstract
Aiming at the function and technical requirements of high-power photovoltaic cell simulation, high-performance programmable logic power supply and dc motor simulation, a high frequency isolation hybrid topology and control strategy based on current-source/voltage-source converter was studied and proposed. Firstly, according to the performance requirements of photovoltaic cell analog power supply, the control strategy requirements of the high-precision wide-range hybrid topology were proposed. Secondly, the working principle of the new hybrid topology was analyzed. At the same time, the equivalent model of the new hybrid topology was simplified and established, and the overall control strategy of the hybrid topology based on current compensation and sliding mode variable structure was proposed. Finally, simulation and experimental research on the hybrid topology was carried out, and the experimental test of photovoltaic cell simulation was completed. The simulation and experimental results show that the hybrid topology and control strategy proposed in this paper has the characteristics of wide-range output regulation, fast dynamic response, high efficiency and high power factor, and can be used for high performance photovoltaic cell simulation, programmable logic power supply and DC motor simulation.
Highlights
DC power supplies and load devices are core devices for energy conversion and diversified applications
Power supply were taken as the research objectives; taking the photovoltaic battery analog power supply as a representative case, a high-precision wide-range hybrid topology and a control strategy are proposed to simulate the characteristics of photovoltaic cells under different environmental conditions
The high-power analog power supply of photovoltaic cells represents the requirements of high-performance, high-precision, and high-response power supply in terms of function and performance, this paper proposes a new hybrid topology and control strategy for power electronics to achieve the above requirements based on the simulation of high-power photovoltaic cells
Summary
DC power supplies and load devices are core devices for energy conversion and diversified applications. Due to the existence of the control dead zone and the stable DC-DC optimal gain ratio requirement, the high-precision control of the low-voltage and small-current is basically impossible, and the field of the high-performance wide-range DC power supply is limited. Based on research of and load switching can only be realized by changing the voltage polarity, and its application range the current source converter topology, PWM pulse logic, modeling method and control strategy, a and occasion areisolation greatly limited. On the basis of this, a current hybrid source type converter is strategy controlled by the voltage compensation space vector control method instead of the current topology overall control based on current and sliding mode variable structure vector control. 2, a hybrid based on a requirements current source high-precision wide-range supplies based on performance requirements of photovoltaic converter is proposed and power its working principle is the analyzed. Analysis of Topology and Control Strategy Requirements Based on Photovoltaic Cell Simulation
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