Fault modeling and simulation method of two-level single-phase four-quadrant pulse rectifier for electric traction AC drive
A technology of pulse rectification and AC drive, which is applied in the direction of instruments, electrical digital data processing, and special data processing applications. Switching and other issues
Active Publication Date: 2016-01-27
SOUTHWEST JIAOTONG UNIV
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[0004] The existing two-level single-phase four-quadrant pulse rectifier fault simulation can also be completed using independent IGBT and diode modules in some software, but the simulation in this case cannot conveniently realize the switching between normal mode and fault mode , it is not possible to study the transient change from normal mode to fault mode of two-level single-phase four-quadrant pulse rectifier
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[0063] The establishment of the fault model of the electric traction AC transmission two-level single-phase four-quadrant pulse rectifier can be carried out according to the method described in the present invention:
[0064] Step 1: You can initialize the model by writing the mdlInitializeSizes(SimStruct*S) function, set the number of input ports of the model to 8, the number of output ports to 2, the model can set parameters to 4, and the number of system state variables is 1.
[0065] Step 2: You can set the simulation time, simulation step size and other parameters by writing the mdlInitializeSampleTimes(SimStruct*S) function.
[0066] Step 3: You can initialize the state variables of the state equation to be solved in the simulation by writing the mdlInitializeConditions(SimStruct*S) function.
[0067] Step 4: By writing the mdlOutputs(SimStruct*S, int_Ttid) function and the mdlDerivatives(SimStruct*S) function, the reading of the input port information, the reading of t...
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Disclosed is a fault modeling simulation method of an electric traction alternating-current transmission two-level single-phase four-quadrant pulse rectifier. On the basis of the working principle of the two-level single-phase four-quadrant pulse rectifier, the specific method includes the step of switching function calculation corresponding to the electric traction alternating-current transmission two-level single-phase four-quadrant pulse rectifier in each fault mode and the step of state equation calculation of the electric traction alternating-current transmission two-level single-phase four-quadrant pulse rectifier based on a switching function calculation result. By means of the fault modeling simulation method of the electric traction alternating-current transmission two-level single-phase four-quadrant pulse rectifier, off-line simulation and simulation of the two-level single-phase four-quadrant pulse rectifier in a normal working state and in a different switching tube fault state in an on-line real-time simulation system can be achieved, switching in the normal working state and in the different switching tube fault state can be achieved based on a state equation model, and the technical problem of a fault-free simulation model in an existing simulation model is solved.
Description
technical field [0001] The invention belongs to the technical field of electric traction AC transmission, and relates to a fault modeling and simulation method for a two-level single-phase four-quadrant pulse rectifier of electric traction AC transmission. Background technique [0002] For technology development in the field of power electronics technology, it is usually necessary to use simulation to first analyze and verify the designed method at the theoretical level, so as to avoid unnecessary economic losses caused by defects in the technical theory design level during the development process . The two-level single-phase four-quadrant pulse rectifier is mainly used in the field of AC traction drive and is the main equipment for AC-DC conversion. When the two-level single-phase four-quadrant pulse rectifier has unavoidable faults during operation, it will pose certain hazards to the normal operation of the entire transmission system. Nowadays, more and more attention i...
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IPC IPC(8): G06F17/50
Inventor 葛兴来韩坤冯晓云熊成林宋文胜苟斌崔恒斌
Owner SOUTHWEST JIAOTONG UNIV