Multi-module parallel DC (direct current) power supply and control method thereof

A DC power supply and multi-module technology, applied in the direction of parallel operation of DC power supplies, can solve problems such as high-power DC power supply parallel operation, and achieve the effects of simple and reliable control methods, convenient production and maintenance, and simple processes
CN102646979AActive Publication Date: 2012-08-22广州爱申特科技股份有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
广州爱申特科技股份有限公司
Publication Date
2012-08-22

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Abstract

The invention relates to a multi-module parallel DC power supply and a control method of the DC power supply. The multi-module parallel DC power supply comprises a monitor system and N DC power supply modules, wherein the monitor system includes a serial communication system, human-machine interaction equipment, and a digital control circuit; and the digital control circuit is respectively connected with the serial communication system and the human-machine interaction equipment. The control method comprises subjecting the output parameters and the set output parameters of all of the working DC power supply modules in each control period to corresponding control computation to make each DC power supply module to output current according to requirement and to realize current equalization. The multi-module parallel DC power supply provided by the invention can realize constant voltage or constant current function according to requirement, and is simple in process, few in wiring, easy in maintenance and so on. The control method of the power supply is simple in operation and reliable in control by adopting digital control. In constant voltage model, the dynamic performance of the multi-module parallel DC power supply is improved greatly, so that the multi-module parallel DC power supply can be directly applied in the digital DC power supply parallel connection system.
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Description

Technical field

[0001] The invention relates to an industrial high-power DC switching power supply, in particular to a multi-module parallel DC power supply and a control method thereof. Background technique

[0002] At present, the demand for various high-power power supplies in many industries is increasing, especially for some high-power DC power supplies. However, the capacity of the DC power supply module is limited, and multi-module parallel operation is often used. Its output energy is several times that of the module output, which improves the power level of the DC power supply. At the same time, the parallel operation of multiple modules makes the system have a certain degree of redundancy. It will affect the normal operation of this system and greatly improve the reliability of the entire system. Parallel operation of multiple modules not only enables the DC power supply to have greater power and reliability, but also has good versatility and can be flexibly combined i...

Claims

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