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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

Active Publication Date: 2012-08-22
广州爱申特科技股份有限公司
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AI Technical Summary

Problems solved by technology

[0003] In order to solve the problem of parallel operation of the current high-power DC power supply, a multi-module parallel DC power supply and its control method are proposed

Method used

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

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Embodiment Construction

[0021] The present invention will be further described below in conjunction with specific embodiments.

[0022] figure 1 Shows the structure block diagram of the multi-module parallel DC power supply in the embodiment, the multi-module parallel DC power supply includes a monitoring system and N DC power modules, N≥2; the monitoring system is connected to each DC power module; figure 2 Shown is a block diagram of the monitoring system in the embodiment. The monitoring system includes a serial communication system 101, a human-computer interaction device 102, and a digital control circuit 103; the serial communication circuit 101 includes a serial communication interface circuit and a CAN bus, It is used to transmit the control instructions sent by the digital control processor to each DC power supply module and the control demand data sent by each DC power supply module to the digital control processor; the human-computer interaction device 102 includes a display and a keyboard for...

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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.

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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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J1/10
Inventor 杜贵平
Owner 广州爱申特科技股份有限公司
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