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首页> 外文期刊>Journal of energy and power engineering >Fault Diagnosis and Phase Disposition Reconfiguration of a 5-Level Double-Boost Power Factor Corrector with Fault-Tolerant Capability
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Fault Diagnosis and Phase Disposition Reconfiguration of a 5-Level Double-Boost Power Factor Corrector with Fault-Tolerant Capability

机译:具有容错能力的5级双升压功率因数校正器的故障诊断和相位配置重新配置

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摘要

A 5-level PFC (power factor correction) topology with fault-diagnostic and fault-tolerant capability is proposed and compared to known structures. It is derived from a 3-level non differential double-boost PFC including fly-cap cells. The series-connection of the two low-voltage switching-cells is decoupled by a single flying capacitor that provides a direct fault-tolerant capability and a post-failure operation increasing the availability of converter. The monitoring of the voltages across flying capacitors allows a rapid detection and localization either for open circuit failure or short-circuits failure. A PWM (pulse width modulation) phase-disposition type reconfiguration is also used and presented in order to optimize both normal operation and post-fault continuation. The design and the most important features are highlighted thanks to a digital control frame and a mock-up rated to: AC voltage network 115 V-load 400 V-nominal power 4 kW-switching frequency 62 kHz.
机译:提出了具有故障诊断和容错能力的5级PFC(功率因数校正)拓扑,并将其与已知结构进行比较。它来自3级非差分双升压PFC,包括飞帽电池。两个低压开关单元的串联连接通过单个飞跨电容器解耦,该飞跨电容器提供直接的容错能力和故障后操作,从而提高了转换器的可用性。监视飞跨电容器两端的电压可以快速检测和定位开路故障或短路故障。为了优化正常操作和故障后连续性,还使用和提出了PWM(脉冲宽度调制)相位配置类型的重新配置。得益于一个数字控制框架和一个额定值达到以下标准的模型,突出了设计和最重要的功能:交流电压网络115 V负载400 V标称功率4 kW开关频率62 kHz。

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