Direct-current power supply asynchronous parallel digital control system and control method thereof

Abstract

The invention relates to a direct-current power supply asynchronous parallel digital control system and a control method thereof. The direct-current power supply asynchronous parallel digital control system comprises a monitoring system and N direct-current power supply modules, wherein N is greater than or equal to 2. The monitoring system comprises a DSP control circuit, a serial communication circuit, man-machine interaction equipment, an asynchronous control circuit and a feedback circuit, wherein the DSP control circuit is respectively connected with the serial communication circuit, the man-machine interaction equipment, the asynchronous control circuit and the feedback circuit. The direct-current power supply asynchronous parallel digital control system of the invention can enable asynchronous and orderly work of the multiple power supply modules to be realized as required, actually control parallel output waveform and enable constant-voltage, constant-current or constant-power control of a power supply system to be quickly realized; the system has the advantages of simple process, less wiring, convenient maintenance and the like; and the system adopts a digital control method which is simple to operate and reliable in control, greatly improves the dynamic performance of the system in a constant-voltage mode and can be directly applied to a digital direct-current power supply parallel system.

Description

technical field [0001] The invention relates to an industrial high-power DC switching power supply, in particular to a DC power asynchronous parallel digital control system and a control method thereof. Background technique [0002] At present, in many industries, the demand for various high-power power supplies is increasing, especially for some high-power DC power supplies. However, the capacity of DC power supply modules is limited, and multi-module parallel operation is often used. The output energy is several times that of the module output, which improves the power level of the DC power supply. At the same time, multi-module parallel operation makes the system have a certain degree of redundancy. It will affect the normal operation of the system and greatly improve the reliability of the whole system. Multi-module parallel operation not only makes the DC power supply more powerful and reliable, but also has good versatility, and can be flexibly combined into various p...

AI Technical Summary

Problems solved by technology

[0003] In order to solve the current problem of parallel operation of high-power DC power supplies, a DC power asynchronous parallel digital control system and its control method are proposed

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