磁场耦合谐振式无线电能传输补偿拓扑结构效率特性分析
Analysis of efficiency characteristics of compensation topology structure in magnetic coupled resonance wireless power transfer
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摘要: 构建磁场耦合谐振式无线电能传输系统4种谐振补偿拓扑结构(原边串联副边串联型、原边串联副边并联型、原边并联副边串联型和原边并联副边并联型)的等效电路模型,分析磁场耦合谐振式无线电能传输系统的效率特性,研究耦合系数和品质因数对系统效率的影响.仿真结果表明,副边谐振补偿拓扑结构对系统效率影响较大,系统效率对耦合系数和品质因数的变化较为敏感,与副边采用串联补偿拓扑结构方式相比,副边采用并联补偿拓扑结构时,系统有更宽的高传输效率范围.实验结果验证了仿真结果的正确性.Abstract: Four resonance compensation topologies equivalent circuit models for magnetic field coupling resonance wireless power transfer system (primary side series and secondary side series type,primary side series secondary side parallel type,primary side parallel secondary side series type and primary side parallel secondary side parallel type) was constructed. The efficiency characteristics of magnetic field coupling resonance wireless power transfer systemwasanalyzed. The influence of coupling coefficient and quality factor on system efficiency was studied. The simulation results showed that the secondary side resonance compensation topology had a greater impact on the system efficiency,and the system efficiency was more sensitive to changes in the coupling coefficient and quality factors.Compared with the secondary side using the series compensation topology,the system had a wider range of high transfer efficiency when the secondary side used the parallel compensation topology. The experimental results verified the correctness of the simulation results.
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Key words:
- wireless power transfer /
- resonance /
- equivalent circuit /
- system efficiency
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