一种无通信并机逆变器电路

The non-communication parallel inverter circuit dynamically adjusts the inverter's output voltage and phase through the main control unit, solving the problems of circulating current and uneven power distribution when multiple inverters are connected in parallel, improving system efficiency and inverter lifespan, and reducing hardware costs and design complexity.

CN224520946UActive Publication Date: 2026-07-17DONGGUAN LONGSHENG ELECTRONICS CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
DONGGUAN LONGSHENG ELECTRONICS CO LTD
Filing Date
2025-07-29
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

When multiple inverters are connected in parallel, there are problems with circulating current and uneven power distribution, which leads to increased system losses, reduced efficiency and shortened inverter life.

Method used

The non-communication parallel inverter circuit is adopted. The main control unit dynamically adjusts the conduction state of the switching transistors of the boost module and H-bridge module based on the sampling signal. Synchronization signals and system status information are transmitted through physical electrical connections to achieve circulating current suppression and uniform power distribution.

Benefits of technology

It effectively suppresses circulating current, enables dynamic adjustment of inverter output voltage and phase, ensures uniform power distribution, improves system efficiency and inverter lifespan, and reduces hardware costs and design complexity.

✦ Generated by Eureka AI based on patent content.

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Abstract

本实用新型公开了一种无通信并机逆变器电路,涉及供电领域,该无通信并机逆变器电路包括:滤波模块,用于平缓输入的直流电;升压模块,用于将平缓后的直流电升压变为400V直流电,输出给H桥模块;H桥模块,用于将400V直流电转化为220V交流电,为负载供电;与现有技术相比,本实用新型的有益效果是:本实用新型基于主控单元接受到的采样信号,感知环流的大小和变化趋势,动态调整升压模块、H桥模块的开关管导通状态,快速准确地调整逆变单元的输出电压幅值和相位,从而有效抑制环流;根据实时监测的采样信号,动态调整各逆变单元的输出功率,实现功率的均匀分配;无需通信协议并机设计,通过物理电气连接传递同步信号。
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