Selective Protection Miniature Circuit Breaker Electromagnetic Actuator Design and Dynamic Optimization

This paper first proposes an electromagnetic actuator design and dynamic optimization method for selective miniature circuit breaker (SMCB), and realizes good coordination of electromagnetic actuator force and energy characteristics. Based on short delay tripping mechanism force and magnetic field model, it builds Matlab and Adams co-simulation platform, simulates and analyzes the magnetic field distribution and force energy property under different electromagnetic topological structure, and establishes the permanent magnet electromagnetic structure model. Then, it builds multi-field coupled mathematical model, and studies multi-objective dynamic optimization design for electromagnetic actuator based on quantum particle swarm algorithm. Finally, it develops the 100A miniature circuit breaker. The experimental results show that the optimized electromagnetic actuator design can effectively control the miniature circuit breaker tripping action threshold and mechanical characteristics.