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

A real-time simulation and inverter technology, which is applied in the direction of instruments, simulators, control/regulation systems, etc., can solve problems such as limited computing speed, affecting real-time simulation response speed, and inaccurate model simulation

Active Publication Date: 2014-08-20
SOUTHWEST JIAOTONG UNIV
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  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

Obviously, the speed of hardware-in-the-loop simulator has become the bottleneck of the whole simulation system, affecting the response speed of real-time simulation
Limited by the calculation speed, real-time simulation still has the problem of inaccurate model simulation

Method used

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

Examples

Experimental program
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Embodiment

[0091] The establishment of the fault model of the two-level rectifier and inverter of the electric traction AC drive system can be carried out according to the method described in the present invention:

[0092] Step 1: Through the Matlab / Simulink toolbox, using the module library Xilinx / Blockset provided by System Generator as the basic module, build a discrete state equation model of the electric traction drive system ( image 3 Shown). The simulation step in this embodiment is 1 μs, and a synchronization pulse generation module needs to be built. Each module receives a trigger signal with a frequency of 1 MHz, and the signal duty cycle is 1%, ensuring that the system completes once every 100 clock cycles Complete operation.

[0093] Step 2: Add the module library Xilinx / Blockset neutron module System Generator, configure the FPGA chip model, synthesis tool, hardware description language, FPGA operating frequency and other basic information, click the generate button "Generate"...

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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.

Description

Technical field [0001] The real-time simulation technology field of power electronics and electric drive systems involves the modeling of electric traction AC drive system structures and high-speed real-time simulation methods. Background technique [0002] In the research and development process of high-power electric drive system, it is necessary to quickly verify the software algorithm of the controller and the hardware scheme of the equipment design. If the computer simulation algorithm is directly transplanted to the controller, and the large-scale power equipment is docked with the actual controller, the risk factor of the research and development process will be greatly increased, and the large-scale power equipment may be damaged, and the safety of the staff may even be threatened. Real-time simulation technology is an effective way to solve this problem. Real-time simulation is different from ordinary computer simulation in that the simulation time is synchronized with ...

Claims

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Application Information

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IPC IPC(8): G05B17/02
Inventor 葛兴来郝琦宋文胜冯晓云熊成林
Owner SOUTHWEST JIAOTONG UNIV
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