Start control method of photovoltaic grid-connected inverter following by inputting voltages

一种光伏并网逆变器的输入电压跟随启动控制方法

Abstract

本发明是一种用于光伏并网逆变器的输入电压跟随启动控制方法,电压跟随控制模块根据其检测到的输入电压来选择由高压逆变模块和高压稳压模块组成的高压模式通道或由低压逆变模块和低压稳压模块组成的低压模式通道,共用驱动模块。目的是解决目前的中大功率光伏并网逆变器启动电压过高,光伏组件输入低电压段得不到有效利用的问题。本发明的系统拥有两套逆变模块和稳压模块,其启动电压容易做到无缝链接,能够最大程度利用组件的发电资源,还有利于提高系统的整体逆变效率。一组驱动模块分别驱动两组逆变模块,不需人为干涉,只要给定设定值,当系统检测到条件满足,系统会自动切换。
The invention provides a start control method of a photovoltaic grid-connected inverter following by inputting voltages. A voltage following control module can select a high voltage model channel composed of a high voltage inverting module and a high voltage regulating module or a low voltage model channel composed of a low voltage inverting module and a low voltage regulating module to share driving modules in accordance with the input voltages detected by the voltage following control module. The method is used for solving the problems that the starting voltage of the existing medium and high power photovoltaic grid-connected inverter is too high and a low input voltage section of a photovoltaic module cannot be effectively utilized. The system has two groups of inverting modules and regulating modules, the starting voltage of the system can be easily realized a seamless connection, the generation resource of the modules can be utilized maximally, and the overall inversion efficiency of the system can be improved. A group of driving modules are used for respectively driving two groups of inverting modules without artificial interferences, a set value is given only, and the system detects the coincident conditions, the system can automatically switch.

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Patent Citations (2)

    Publication numberPublication dateAssigneeTitle
    CN-102097948-AJune 15, 2011上海市电力公司, 中国电力科学研究院, 中电普瑞科技有限公司一种高电位直流电压取能电源
    CN-201946994-UAugust 24, 2011扬州晶旭电源有限公司Capacitor-resistor device of solar photovoltaic grid-connected inverter

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