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首页> 外文会议>IEEE Transportation Electrification Conference and Expo >Modeling and Simulation of a 20kV Ultra-Fast DC Circuit Breaker for Electric Shipboard Applications
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Modeling and Simulation of a 20kV Ultra-Fast DC Circuit Breaker for Electric Shipboard Applications

机译：电动船用20kV超快速直流断路器的建模与仿真

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摘要

A novel hybrid circuit breaker for medium voltage dc (MVDC) electric shipboard power systems is proposed. The breaker combines the benefits of the efficiency of a mechanical breaker and the interruption speed of a solid-state breaker. The proposed breaker utilizes a fast-ramping current source with a fast-actuating vacuum interrupter (VI) to provided ultra-fast response time and high on-state efficiency. During normal operation, nominal load current flows through the vacuum interrupter in the main conduction branch, providing a low-resistance path with negligible losses. During a fault, a current zero crossing is achieved by the use of a controllable resonant current source (RCS). By leveraging the high switching frequency capabilities of Silicon Carbide (SiC) devices, the current source achieves higher frequency of resonance than previously possible with the silicon counterparts. After interruption, the surge arrester in the energy absorption branch clamps overvoltages and dissipates all residual system energy. Simulation results from the PLECS software environment are presented to verify the functionality of this proposed breaker in a 20 kV MVDC system for electric shipboard applications.
机译：提出了一种用于中压直流（MVDC）舰船电力系统的新型混合断路器。断路器结合了机械断路器的效率和固态断路器的中断速度的优点。拟议中的断路器利用了具有快速启动的真空灭弧室（VI）的快速斜坡电流源，以提供超快速的响应时间和高的通态效率。在正常操作期间，标称负载电流流经主传导分支中的真空断路器，从而提供了低电阻路径，损耗可忽略不计。在故障期间，通过使用可控谐振电流源（RCS）可以实现电流过零。通过利用碳化硅（SiC）器件的高开关频率功能，电流源实现了比以前的硅对应物更高的谐振频率。中断后，能量吸收分支中的电涌放电器会钳制过电压并消散所有剩余的系统能量。给出了PLECS软件环境的仿真结果，以验证此提议的断路器在20 kV MVDC系统中的功能，以用于电动舰载应用。

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