Control method based on multi-input direct current converter switch state of state machine

A technology of DC converter and control method, which is applied in the direction of converting DC power input to DC power output, control/regulation system, parallel operation of DC power supply, etc., and can solve the problem that the nonlinear influence of the system cannot be effectively avoided, and the uninterrupted supply of load cannot be guaranteed. Power supply, non-linear phenomena affect system efficiency and other issues, to achieve the effect of easy centralized control, reduced power loss, and reduced control circuits

CN105186867AActive Publication Date: 2015-12-23湖南茂硕电气有限公司
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
Publication Date
2015-12-23

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Abstract

The invention is applicable to the technical field of switch control, and provides a control method based on a multi-input direct current converter switch state of a state machine, comprising the following steps: A, judging whether output voltage of an intermittent power supply is greater than a preset value or not; B, judging whether a continuous power supply has voltage output or not; and C, closing a direct current exchanger switch of an energy storage apparatus and executing the second judging step; and when a detector detects that the energy storage apparatus is fully charged, switching off the charging switch of the energy storage apparatus. Devices and related control circuits are reduced, and the power consumption is reduced; high power density, effective management, compact layout, and improved stability of the system are achieved; centralized control can be realized easily; and the cost and the volume of the system are reduced.
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Description

technical field

[0001] The invention belongs to the field of switch control, in particular to a control method based on state machine multi-input DC converter switch state. Background technique

[0002] With the increasing use of renewable energy by human beings, the development of microgrids has attracted more and more attention. In the past five years, through continuous in-depth research, the development of microgrids has achieved remarkable results. The United States defines microgrid as a new power supply system composed of loads and distributed power sources. It mainly uses new renewable input sources, such as wind energy and solar energy, etc. Its wide application can reduce the shortage of non-renewable energy sources and greatly improve the environmental pollution problem. In Europe, power electronics technology and intelligent control technology are used to combine traditional power supply system and micro-grid power supply system to fully improve energy utilizat...

Examples

Embodiment Construction

[0061] figure 1 Shown is a flow chart of the control method based on the state machine multi-input DC converter switch state provided by the present invention, which is described in detail as follows:

[0062] Step S1, judging whether the output voltage of the intermittent power supply is greater than a preset value, if yes, turn off the switch of the intermittent DC converter and charge the energy storage device, if not, go to step S2.

[0063] Step S2, judging whether there is a voltage output from the continuous power supply, if there is a voltage output, then the switch of the continuous DC converter is closed and the energy storage device is charged and the first judging step is executed, if there is no voltage output, then step S3 is executed; The first judgment step: execute step S1, and in step S1, if yes, then open the current closed switch and close the intermittent DC converter switch to charge the energy storage device; if no, execute step S2.

[0064] Step S3, th...