High-speed real-time simulation method for two-level rectifier and inverter

A real-time simulation, inverter technology, applied in instruments, simulators, control/regulation systems, etc., can solve problems such as limited computing speed, affecting real-time simulation response speed, and inaccurate model simulation.
CN103995477BActive Publication Date: 2016-10-05SOUTHWEST JIAOTONG UNIV
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Patent Information

Authority / Receiving Office
CN ยท China
Patent Type
Patents(China)
Current Assignee / Owner
SOUTHWEST JIAOTONG UNIV
Publication Date
2016-10-05

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Abstract

The invention discloses a high-speed real-time simulation method of a two-level rectifier and an inverter. A hybrid logic dynamic model is used for describing an electric traction drive system, so that a logical expression is built for judging the switching function state of the rectifier and the inverter; a state equation and a matrix equation are used for conducting modeling on the rectifier and the inverter respectively; an electric traction drive system discretization calculation implementation block diagram is provided, and concurrent simulation calculation is realized. According to the high-speed real-time simulation method of the two-level rectifier and the inverter, an FGPA chip is used as a simulation calculation unit, a System Generator tool is used for integrating a simulation mathematic model into the FPGA chip, a rectifier simulation model is discretized, and numerical variables in a fixed-point number simulation system are adopted; delay caused by calculation step length is reduced through microsecond real-time simulation, the dynamic property of a simulation system is improved, and simulation precision is improved.
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Description

Technical field

[0001] The technical field of real-time simulation of power electronics and electric drive system involves modeling of electric traction AC drive system structure and high-speed real-time simulation method. Background technique

[0002] During the research and development of high-power electric drive systems, it is necessary to quickly verify the software algorithm of the controller and the hardware solution of the equipment design. If the computer simulation algorithm is directly transplanted into the controller, and the large-scale power equipment is connected to the actual controller, the risk factor of the research and development process will be greatly increased, which may cause damage to the large-scale power equipment and even threaten the safety of the staff. Real-time simulation technology is an effective way to solve this problem. Real-time simulation is different from ordinary computer simulation, and its simulation time is synchronized with natu...

Claims

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