Optimal Control Method for Parallel Power Supply System Based on Current Sharing Standard Deviation Matrix Column and Minimum

Abstract

The invention relates to an optimal control method for a parallel power supply system based on the minimum column sum of an equalizing standard deviation matrix. According to the method, firstly, the standard deviation matrix is built to determine output current when the equalizing property of the system is the optimal; secondly, a centralized controller determines an output current value under the condition that the equalizing property is the optimal through obtaining the output current of online power supply modules in real time and obtains an optimal value of the number of the online power supply modules; thirdly, the centralized controller controls the number of the online power supply modules in real time and ensures that the number is the optimal value or close to the optimal value; and whether running power supply modules meet the requirements or not is judged and optimal dispatching control is carried out. Under the target of ensuring that the equalizing property of the parallel power supply system is close to an optimal working point, i.e., the number of the online running power supply modules is the optimal, optimal dispatching on the online power supply modules with poor equalizing property and standby power supply modules is carried out by calculating the standard deviation of the output current of each power supply module and equalizing target value deviation, so that the target that the parallel power supply system and the online power supply modules work near the optimal point of the equalizing property is achieved.

Description

technical field [0001] The present invention relates to an optimal control method for a parallel power supply system based on the standard deviation matrix column of current sharing and the minimum, which is used to optimize and control the operating quantity of power supply modules and the scheduling of power supply modules, so as to achieve the optimal current sharing performance of the parallel connection system. The method is also applicable to other electronic systems. Current sharing optimization control when equipment is running in parallel. Background technique [0002] The high-power parallel power supply is a parallel output structure of multiple power modules. Because of its 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 of mo...

AI Technical Summary

Problems solved by technology

At the same time, the existing parallel power supply system current sharing control strategy does not acquire, evaluate and optimize the operating performance of the online power module, and cannot ensure that the current sharing performance of the online power module meets the requirements

[0005] However, searching existing papers and patents shows that a reliable and practical current-sharing optimization control method for parallel power supply systems with the goal of optimizing current-sharing performance has not been found. Parameter Parallel Operation Control Method

However, this method is based on adjusting active and reactive power to optimize the operation of the inverter, and is not suitable for all parallel power supply systems.

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