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基于二阶广义积分器与等效无功电流注入技术的电池阻抗在线测量

Online Measurement of Battery Impedance Based on Second-Order Generalized Integrator and Equivalent Reactive Current Injection Technology

语言:

中文摘要

本文提出了一种基于二阶广义积分器(SOGI)和等效无功电流注入技术的电池阻抗在线测量方法。该方法通过向电池注入等效无功电流,在不影响电池正常工作状态的前提下,实现对电池电化学阻抗的实时监测,为表征电池状态提供了有效工具。

English Abstract

The electrochemical impedance is a powerful tool to characterize battery state, and online measurement of battery impedance has significant importance. In this letter, an online battery impedance measurement method based on second-order generalized integrator (SOGI) and equivalent reactive current injection technology is proposed. An equivalent reactive current is injected to battery, which does n...
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SunView 深度解读

该技术对阳光电源的PowerTitan和PowerStack等储能系统具有极高的应用价值。通过集成该在线阻抗测量算法,阳光电源的BMS(电池管理系统)能够更精准地评估电池的健康状态(SOH)和老化程度,从而优化PCS(储能变流器)的充放电策略。这不仅能提升储能系统的安全性,防止热失控风险,还能延长电池循环寿命,提升iSolarCloud智能运维平台的故障预警能力,为工商业及电网侧储能项目提供更具竞争力的全生命周期管理方案。