Metal Oxide Varistor Design Optimization and Main Breaker Branch Switch Control of a Progressively Switched Hybrid DC Circuit Breaker

Rachi, Md Rifat Kaisar; Husain, Iqbal

doi:10.1109/tia.2022.3156534

Cited by 4 publications

(1 citation statement)

References 26 publications

(20 reference statements)

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“…This design method of the commutation circuit is suitable for occasions where the requirements for current limiting are not high, and the current-limiting capacity is greatly affected by the moving speed of the mechanical switch. In reference [21,22], a new switch strategy for the optimization of a progressive switched hybrid DC circuit breaker is proposed and applied in the DC distribution system, which realized the low fault current peak and more uniform energy absorption of two MOV devices at the same time.…”

Section: Introductionmentioning

confidence: 99%

Parameter Optimization Design of the Commutation Circuit of a Hybrid DC-Current-Limiting Circuit Breaker

Lv,

Zhuang,

et al. 2023

Energies

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Aimed at the optimization design of the parameters of the commutation circuit of a hybrid DC-current-limiting circuit breaker (HDCCLCB), a parameter selection model considering the short-time withstand of the thyristor and the volume of the commutation circuit is proposed by simplifying the object, and the commutation circuit parameters were preliminarily obtained. In order to verify the correctness of the method of selecting the commutation circuit parameters, the circuit simulation model of the HDCCLCB was built. The experimental platform was built, and the breaking experiment was completed under the fault condition with the current rising rate of 20 A/μs. The correctness of the simulation model and parameter design method was verified by comparing the circuit model simulation results with the experimental results. In order to further optimize the parameters of the commutation circuit, a mathematical model for optimization design was established. Taking the maximum critical breakdown voltage under unit capacitance energy as the objective function, the arcing time before commutating and the current-limiting inductance and capacitance are enumerated to obtain the optimized commutation circuit parameters. By comparing this result with the result of the preliminary design, the objective function is improved by 20.7%, laying a solid foundation for further research and the development of current-limiting circuit breakers for medium-voltage DC systems.

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Section: Introductionmentioning

confidence: 99%