Parallel power supply system current sharing performance evaluation method based on current sharing deviation expected matrix 2 norms

Abstract

The invention relates to a parallel power supply system current sharing performance evaluation method based on current sharing deviation expected matrix 2 norms, an expected matrix of the deviation of actual current values and expected current sharing values of a power supply module of a parallel power supply system in different load conditions (which can contain light load, half load, rated load and over load ) can be constructed, 2 norms of the expected matrix can be calculated, the current sharing performance can be evaluated according to the 2 norms, and the method is used for calculating the 2 norms ||A||2 of A=(E)<N<t>*U> through constructing the current sharing relative deviation expected matrix A=(E)<N<t>*U> in different load conditions. The physical significances of the norm value comprises: the distance between the current sharing relative deviation and an ideal target (0 vector) of the parallel power supply system in all load conditions can be represented, and the basis is provided for parallel power supply optimization design. A maximum allowable boundary value [sigma] is set, so that if the population deviation performance of the parallel power supply system current sharing dynamic response process is qualified can be quickly distinguished.

Description

technical field [0001] The invention relates to a method for evaluating the current sharing performance of a parallel power supply system based on the 2-norm of the current sharing deviation expectation matrix, which is used for evaluating the current sharing performance of the parallel power supply system. The method is also applicable to the evaluation of the current sharing performance of other electronic equipment in parallel operation. Background technique [0002] The high-power parallel power supply system is a parallel output structure of multiple power modules. It has a series of advantages such as strong compatibility, N+m redundant backup, strong reliability, high cost performance, low design difficulty, and easy management. It has become a solution One of the preferred solutions for high-power output power supply design. Current sharing technology has become the core technology for parallel power supply of switching power supply modules. The current sharing tech...

AI Technical Summary

Problems solved by technology

[0004] However, searching existing papers and patents shows that a scientific, reliable, comprehensive and practical method for evaluating the current sharing performance of parallel power supply systems has not been found, but there is a parallel operation evaluation based on droop parameters in the inverter power parallel operation system method

However, this method is used to adjust active power and reactive power, and is not suitable for current sharing performance evaluation of other parallel power supply systems.

Images