摘要
无线电能传输中线圈结构设计需要兼顾传输效率、抗偏移、重量、体积等诸多关键指标,因此需要建立线圈结构的多目标优化模型以实现磁芯最优布局。以正对时互感和所占用体积为设计基准,研究原副边磁芯位移变化对互感、互感保持系数和体积的影响。通过多目标遗传算法建立优化模型,求解模型的Pareto解集以获取不同优化目标的多组最优解,可根据实际需求选取相应的磁芯布局方案。所提出的优化方法能够处理冲突目标的同步优化问题,可权衡不同磁芯布局方案对于线圈间互感、抗偏移能力、体积的综合影响。以70 mm×15 mm×5 mm磁芯在半径100 mm的15匝线圈结构为例,通过仿真和实验结果对比5组磁芯布局方案不同的优化特性,验证了所提优化方法的可行性。
The coil structure in the wireless power transfer needs to take into account many key indicators such as the efficiency, anti-offset, weight and volume. Therefore, a multi-objective optimization model is needed to achieve the optimal layout of the magnetic core. Mutual inductances and occupied volumes under the typical position are used as the references, so the influence of ferrite cores at different positions on the mutual inductance, mutual inductance retaining ratio and volume can be defined. Based on a multi-objective genetic algorithm, an optimization model was established. The series of Pareto solutions were solved to obtain the optimal solutions for different optimization objectives. According to actual requirements, the layout of ferrite cores can be selected. The proposed optimization method can deal with the synchronous optimization problem of conflict targets, which can balance the comprehensive influence of different layouts on mutual inductance, anti-offset and volume. Taking 70 mm×15 mm×5 mm ferrite cores with the 15 turns coil and the radius of 100 mm as an example, the results between simulations and experiments are compared, and the five arrangements of ferrite cores verify the feasibility of the proposed method.
作者
周岩
马崇原
施天皓
ZHOU Yan;MA Chong-yuan;SHI Tian-hao(College of Automation,Nanjing University of Posts and Telecommunications,Nanjing 210023,China)
出处
《电机与控制学报》
EI
CSCD
北大核心
2022年第12期108-115,共8页
Electric Machines and Control
基金
国家自然科学基金(51777098)
江苏省自然科学基金(BK20191383)
江苏省青蓝工程。
关键词
无线电能传输
遗传算法
PARETO前沿
有限元
磁芯移动
铁氧体磁芯
inductive power transfer
genetic algorithm
Pareto front
finite element method
magnetic core movement
ferrite core