| 引用本文: | 陈俊杰,陈乾宏,张斌.基于线圈定位与电容阵列的感应式无线电能传输系统调谐控制[J].电力自动化设备,2023,43(2): |
| CHEN Junjie,CHEN Qianhong,ZHANG Bin.Tuning control of inductive power transfer system based on coil positioning and capacitor array[J].Electric Power Automation Equipment,2023,43(2): |
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| 摘要: |
| 在实际应用中，感应式无线电能传输系统通常存在耦合线圈错位的复杂工况，影响系统的传输功率和效率。基于线圈定位与电容阵列提出一种适于S/SP补偿网络的调谐控制策略，在错位失谐工况下，主动利用原、副边线圈的位置信息，优化系统特性。为了量化系统的输出电压波动，建立了S/SP补偿网络在全工况下电压增益曲线的计算模型。进而为确保错位工况下系统的恒压输出特性，在给定的耦合系数变化范围和输出电压波动指标内，给出了电容阵列切换级数和容值调节步长的最优设计，并与传统定电容补偿进行对比。最后，通过一台800 W输出的原理样机对所提策略的有效性进行验证。验证结果表明，采用所提调谐控制策略，可以显著提高系统的输出功率与效率，并大幅降低其输出电压波动。 |
| 关键词: 感应式无线电能传输 线圈定位 电容阵列 S/SP补偿网络 输出电压波动 |
| DOI：10.16081/j.epae.202207029 |
| 分类号:TM724 |
| 基金项目:国家自然科学基金资助项目(52277185)；江苏省重点研发计划项目(BE2019113) |
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| Tuning control of inductive power transfer system based on coil positioning and capacitor array |
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CHEN Junjie, CHEN Qianhong, ZHANG Bin
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College of Automation Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China
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| Abstract: |
| In practical applications, complex working condition of coil misalignment existed in inductive power transfer system will affect the transmission power and efficiency. Based on coil positioning and capacitor array, a tuning control strategy for series/series-parallel(S/SP) compensation network is proposed, which can improve the system characteristics under coil misalignment and detuning conditions by actively utilizing the position information of the primary and secondary coils. In order to quantify the output voltage fluctuation of the system, a calculation model of the voltage gain curve of S/SP compensation network under all operating conditions is established. Furthermore, in order to ensure the constant voltage output characteristics of the system under the coil misalignment condition, the optimal design of the switching levels of the capacitor array and the adjustment step size of capacitor value is given within the determined coupling coefficient range and output voltage fluctuation range, and compared with the traditional S/SP compensation method. Finally, the effectiveness of the proposed tuning control method is verified by using an 800 W output prototype. The experimental results show that the proposed tuning control strategy can remarkably improve the output power and efficiency, meanwhile the output voltage fluctuation can be decreased significantly. |
| Key words: inductive power transfer coil positioning capacitor array S/SP compensation network output voltage fluctuation |
