Optimization method of parameters of small step switch model

Abstract

The invention provides an optimization method of parameters of a small step switch model. The optimization method includes that analyzing stability ranges of errors of a small step switch, ensuring selectable range of the parameters of the small step switch model; setting up equivalent damping coefficient model of the small step switch model, ensuring mutual relationship of capacitor and inductance of the small step switch under a cut-off state; setting up a switch loss module of the small step switch, using the loss to measure the errors of the switch, and ensuring relationship between equivalent admittance of the small step switch and the equivalent admittance of an external circuit through optimizing the loss; and setting up a specific parameter arrangement of the small step switch model. The optimization method of the parameters of the small step switch model solves the problems that an existing small step switch model can not ensure model parameters and then accuracy is affected, can ensure the parameter model of the small step switch, and simultaneously ensures that the loss of the small step switch in simulation is reduced to the minimum, and improves accuracy of small step simulation.

Description

technical field [0001] The invention belongs to the field of electric switches, and in particular relates to a parameter optimization method of a small-step switch model. Background technique [0002] In small step size simulation, the parasitic characteristics of the switch are taken as the starting point for the capacitance-inductance equivalent switch. The characteristics of the switch when it is open can be simulated by capacitance, and the inductance can be used for equivalent value during the closing process. As long as the capacitance and inductance characteristics of the switch have similar Dommol equivalent admittance under a specific simulation step size, the switch switching The operation does not need to modify the admittance array of the system, which improves the efficiency of system simulation. [0003] At present, the simulation step size of high-frequency converters is 1-3 microseconds (us), and the parameters of the switch L / C model defined according to th...

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Problems solved by technology

[0004] In order to overcome the above-mentioned defects, the present invention provides a parameter optimization method of a small-step switch model, which overcomes the problem that the existing small-step switch model cannot determine the model parameters and affects the simulation accuracy of the model, and establishes a detailed algorithm for the small-step algorithm. The modeling formula can not only determine the parameter model of the small step size switch, but also ensure the minimum loss of the small step size switch in the simulation, which improves the accuracy of the small step size simulation

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