基于耦合电感的自触发混合式直流断路器研究OA
Research on Self-Triggered Hybrid DC Circuit Breaker with Coupled Inductors
为提升光伏系统中直流断路器的分断性能,提出了一种基于耦合电感的自触发混合式直流断路器(HDCCB),并采用小型断路器作为其机械开关.基于实验测得电弧伏安特性,建立了该自触发HDCCB的分断模型.通过耦合电感降低故障电流的上升率,进而限制其峰值.同时,提前绝缘栅双极型晶体管(IGBT)的导通时刻,缩短了断路器的整体分断时间.在高电压等级下,电感的分压和限流能力有助于实现大容量分断.结果表明,所提出的断路器在1 500 V电压等级下,实现了对15 kA电流的分断,分断时间为4.45 ms.
To improve the interruption performance of DC circuit breakers in photovoltaic systems,a self-triggered hybrid DC circuit breaker(HDCCB)based on coupled inductors is proposed,which uses a miniature circuit breaker as the mechanical switch.Based on the experimentally measured arc volt-ampere characteristics,an interruption model of the proposed HDCCB is established.The coupled inductors reduce the rise rate of the fault current,thereby limiting its peak value.In addition,advancing the turn-on instant of the IGBTs shortens the overall interruption time of the circuit breaker.At high voltage levels,the voltage division and current limiting capabilities of the inductors contribute to high-capacity interruption.The results show that the proposed breaker interrupts a 15 kA current in 4.45 ms at a 1 500 V voltage level.
任昌宾;卢权胜;黄靖靖;尹健宁
浙江天正智能电器有限公司,浙江嘉兴 314031浙江天正电气股份有限公司,浙江 温州 325604西安理工大学电气工程学院,陕西西安 710054西安理工大学电气工程学院,陕西西安 710054
信息技术与安全科学
混合式直流断路器自触发耦合电感分断时间
hybrid DC circuit breakerself-triggeredcoupled inductorinterruption time
《电器与能效管理技术》 2026 (4)
41-48,8
陕西省教育厅科研计划项目(24JP128)
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