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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.

Active Publication Date: 2016-10-05
SOUTHWEST JIAOTONG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0091] The establishment of the two-level rectifier and inverter fault model 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). In this embodiment, the simulation step length is 1μs, and a synchronous pulse generation module needs to be built. Each module receives a trigger signal with a frequency of 1MHz, and the signal duty cycle is 1%, which ensures that every 100 clock cycles, the system completes once complete operation.

[0093] Step 2: Add the submodule System Generator in the module library Xilinx / Blockset, configure the basic information such as the FPGA chip model, synthesis tool, hardware description language, FPGA operating frequency, and click the "Generate" bu...

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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 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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Application Information

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Patent Type & Authority Patents(China)
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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