Design of three-level inverter vector control apparatus based on FPGA

Abstract

The invention relates to a three-level inverter vector control apparatus based on FPGA. The three-level inverter vector control apparatus based on FPGA includes a control panel carrying an FPGA chip, an optical coupler isolation module, a three phase inverter main circuit, a sampling conditioning circuit, an A / D module, a communication module and a power supply module, wherein the power supply module supplies power for the control panel; the control panel completes a space vector pulse width modulation algorithm, and transmits a PWM modulation signal to the optical coupler isolation module to convert the PWM modulation signal into a high-low voltage level being able to drive IGBT and transmit the high-low voltage level to the three phase inverter main circuit; the voltage is output through control of on / off of a power switch tube for power supply of the load; and at the same time, the voltage and current signals acquired by the sampling conditioning circuit are sent to the A / D module, and then digital-to-analog conversion is performed on the detection signals, and then the detection signals are fed back to the control panel to realize closed-loop control, and at the same time, the detection signals are uploaded to a host computer for real-time monitoring through the communication module. The three-level inverter vector control apparatus based on FPGA can greatly improve precision and dynamic and stable state performance of the output voltage, is high in the program compatibility, and can improve the operation efficiency of the system.

Description

technical field [0001] The invention belongs to the field of power systems, and in particular relates to the design of an FPGA-based three-level inverter vector control device. Background technique [0002] With the development of economy and society and the progress of human beings, energy is also gradually exhausted. The use of fossil fuels has brought us rapid development of material civilization, but also brought unprecedented disasters to the homeland we depend on for survival. The progress of human civilization is closely related to energy. The rational development and use of new energy will greatly improve the quality and quantity of energy. If human beings want to develop these new energy sources, they need to find a converter to realize it, so inverters came into being, especially three-phase inverters. Three-phase inverters play a vital role in clean energy power generation, such as those used in solar power and wind power generation. The function of the inverter ...

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Problems solved by technology

[0006] The purpose of the present invention is to design a FPGA-based three-level inverter vector control device to solve the problems of backward control technology and low work efficiency in current inverter applications

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