Current-equalizing standard difference matrix 2 norm-based parallel power supply system current-equalizing performance evaluation method

Abstract

The invention relates to a current-equalizing standard difference matrix 2 norm-based parallel power supply system current-equalizing performance evaluation method. The method comprises the steps of establishing the standard difference matrix between the actual current value of a power supply module of the parallel system under different load conditions (containing light load, half load, rated load and overload) and the expected current-equalizing value so as to calculate the 2 norm of the standard difference matrix, and evaluating the current-equalizing performance of the system according to the 2 norm. The method provided by the invention provides basis for optimal design of parallel power supply by establishing the current-equalizing difference matrix and calculating the 2 norm of, wherein the norm represents the distance between the relative overshoot of the current-equalizing dynamic response process of the parallel power supply system under all the load conditions and the ideal goal (namely 0 vector). The method provided by the invention can quickly judge whether the relative overshoot performance of the current-equalizing dynamic response process of the parallel power supply system is qualified by setting the maximum allowable boundary value Sigma max.

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 standard deviation 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 technol...

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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.

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