Abstract Many power electronics applications require high tolerance to faults such as short circuit or open circuit of the control signals. One such application is the CERN High energy AcceleRator Mixed-field (CHARM) facility, where maintenance may be precluded for long periods of time due to radiation and, therefore, high reliability is necessary. A redundant interconnection architecture for the control signals is proposed, where each signal is individually processed by different CPUs and transmitted through separate interconnection lines. During normal operation, the CPUs are synchronized and produce the same signals. The purpose of the proposed hardware and firmware strategy is to allow the actuator to continue operating even in case of fault; regardless of the fault type (open circuit, short circuit to ground or to positive supply), a fault on one of the parallel lines would not inhibit the correct operation of the remaining line. This solution can be used to control the movements of a target system using a remote joystick in a safe environment. The architecture features reliable transmission of PWM signals driving a half-bridge power converter. Moreover, it is possible to extend it to any type of converter such as three-phase bridges, three-level NPC, or buck-boost converters. Simulations and experimental results show a good agreement, proving the effectiveness of the proposed fault-tolerant circuitry.

中文翻译：

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CERN 的 CHARM 设施远程控制平台：一种新的容错冗余架构

摘要 许多电力电子应用要求对控制信号的短路或开路等故障具有高耐受性。此类应用之一是 CERN 高能加速器混合场 (CHARM) 设施，在该设施中可能会因辐射而无法长时间维护，因此需要高可靠性。提出了控制信​​号的冗余互连架构，其中每个信号由不同的 CPU 单独处理并通过单独的互连线传输。在正常操作期间，CPU 同步并产生相同的信号。提议的硬件和固件策略的目的是允许执行器即使在出现故障时也能继续运行；无论故障类型如何（开路、对地短路或对正极电源短路），其中一条平行线路上的故障不会影响其余线路的正确运行。该解决方案可用于在安全环境中使用远程操纵杆控制目标系统的运动。该架构具有可靠传输 PWM 信号驱动半桥功率转换器的特点。此外，可以将其扩展到任何类型的转换器，例如三相桥、三电平 NPC 或升降压转换器。仿真和实验结果显示出良好的一致性，证明了所提出的容错电路的有效性。该架构具有可靠传输 PWM 信号驱动半桥功率转换器的特点。此外，可以将其扩展到任何类型的转换器，例如三相桥、三电平 NPC 或升降压转换器。仿真和实验结果显示出良好的一致性，证明了所提出的容错电路的有效性。该架构具有可靠传输 PWM 信号驱动半桥功率转换器的特点。此外，可以将其扩展到任何类型的转换器，例如三相桥、三电平 NPC 或升降压转换器。仿真和实验结果显示出良好的一致性，证明了所提出的容错电路的有效性。