Novel Piezoelectric Emergency Opening Sub-System to Improve the Safety and Reliability of Zero-Holding-Energy Permanent Magnet Magnetic Contactors

This paper presents a novel piezoelectric emergency subsystem that monitors the state of the input power source and opens the zero-holding-energy PM magnetic contactors in emergency circumstances

Nikita Gabdullin; Jong-Suk Ro

2020

Scholarcy highlights

  • Increasing the efficiency of electrical energy generation and distribution, as well as reducing overall energy consumption, has become a crucial research topic in recent decades
  • The zero-holding-energy PM MC-piezoelectric emergency subsystem is a zero-holding-energy system that acts as a normally-open magnetic contactors in case of sudden power outage
  • Conventional solenoid MCs and energy-saving permanent magnet MCs maintain an open state in the case of a power outage and are not subjected to the reliability concerns described in this paper
  • This was achieved by incorporating a zero-holding-energy PZT cantilever bender switch to monitor the input voltage and instantaneously connect the opening coil of the ZMC to an inexpensive battery in the event of a power outage, thereby leading to prompt opening and disconnection of the ZMC’s load
  • The feasibility of the proposed ZMC-PES system was confirmed using data obtained from a fabricated prototype, which verified the short response time and zero continuous energy consumption
  • The proposed ZMC-PES system can be installed in AC and DC vehicular microgrids to improve the energy-efficiency and lifetime of electric vehicles such as aircrafts and ships
  • The proposed zero-holding-energy PM magnetic contactors-piezoelectric emergency subsystem system can be installed in AC and DC vehicular microgrids to improve the energy-efficiency and lifetime of electric vehicles such as aircrafts and ships

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