FPGA-based power electronic simulation system and method

Abstract

The invention relates to the simulation technology field, and discloses an FPGA-based power electronic simulation system and method. The FPGA-based power electronic simulation method is applied to a power electronic system. The FPGA-based power electronic simulation method comprises the following steps: downloading a circuit model of a power electronic system in an FPGA module; connecting voltage and current equations of modes in the circuit model and obtaining an admittance matrix of the power electronic system, wherein the dimensions of the admittance matrix will not change along with changes of the switch state of a circuit in the power electronic system; updating corresponding parameters of switches that change in state in the admittance matrix if the switch state of the circuit in the power electronic system changes; and resolving state parameters of the circuit model of the power electronic system according to the updated admittance matrix, and simulating the power electronic system. In this way, an admittance matrix of a system is prevented from being re-calculated every time when the state of a switch changes. The simulation time is saved, and the simulation efficiency is improved.

Description

technical field [0001] The invention relates to the field of simulation technology, in particular to a power electronics simulation system and method based on FPGA (Field Programmable Gate Array). Background technique [0002] At present, in the field of real-time simulation of power systems, the low-frequency power electronics simulation technology for traditional power transmission and distribution systems has tended to be perfected, and the simulation system based on CPU (central processing unit, central processing unit) is mainly used. The simulation system based on this software environment of CPU has the advantages of simple operation, high maturity and low complexity. Today, CPU-based simulation systems have been widely used in real-time simulations for large-scale power grids and traditional power transmission and distribution systems. [0003] With the rise of smart grids, large-scale power electronics have been applied in new energy grid-connected, distributed pow...

AI Technical Summary

Problems solved by technology

The admittance matrix of the power electronic system can be established by using the node analysis method. However, once the state of the circuit changes, for example, the state of the switch changes, the admittance matrix of the system must be recalculated. The time cost is high and the simulation is reduced. speed

[0006] Moreover, with the expansion of the scale of the power electronic system, there will be situations where the corresponding number of power electronic devices cannot be satisfied by relying on simulation resources.

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