本論文為探討並聯型切換式電容器應用於電動車無線功率傳輸系統上，使用數位訊號處理器控制切換式電容器改變其等效電容值，進而改變諧振槽增益使輸出電壓在不同負載及不同偏移量下能夠維持。本論文根據國際電動車規範(Society of Automotive Engineers, SAE J2954TM )所提出之WPT3/Z2(功率等級/Z軸規格)架構、介紹其充電盤偏移量限制、傳送端(Ground Assembly, GA)線圈、接收端線圈(Vehicle Assembly, VA)之規格與圈數。最後為符合SAE J2954TM所提出之WPT3/Z2規範，諧振槽輸入端最大電流40 A與GA線圈最大電流75 A之限制與諧振槽可變元件之電抗限制，將對(Double Side LCC, DS-LCC)諧振式轉換器進行分析與設計。為方便分析將介紹無線功率傳輸之耦合線圈等效電路模型，推導出DS-LCC諧振式轉換器之諧振槽轉移函數，即可繪出不同負載與諧振參數下之輸出電壓，最後根據SAE J2954TM規範所提出之諧振槽可變元件，將提出切換式電容電路介紹其動作原理與控制方法，並比較不同類型之差異，最後將其與DS-LCC諧振式轉換器整合應用。
本論文中將提出一套設計流程，依照此流程進行設計，可確保WPT3/Z2之並聯型切換式電容拓撲電路能符合SAE J2954TM所提出之規範，並在規格下之負載範圍與耦合係數範圍內，以固定操作頻率85 kHz下皆能正常動作。最後實作出一組11.1 kW無線功率傳輸系統原型機，此原型機在GA線圈與VA線圈在垂直距離相差140 mm至210 mm之間以及X軸偏移量75 mm，Y軸偏移量100 mm時皆能達到輸出規格要求，最高效率為90.9 %。

This thesis explores the application of parallel-switched capacitors in a 11.1 kW wireless power transfer system for electric vehicles. It focuses on using a digital signal processor to control the switched capacitors, adjusting their equivalent capacitance values to modify the resonant tank gain and maintain the output voltage under various loads and offsets. The design is based on the WPT3/Z2 framework proposed by the Society of Automotive Engineers (SAE J2954TM), which specifies the charging pad implementation offsets, specifications, and turns of the Ground Assembly (GA) and Vehicle Assembly (VA) coils. The paper also analyzes and designs a Double Side LCC (DS-LCC) resonant converter to meet the SAE J2954TM specifications, considering current limits and reactance restrictions. The proposed design process ensures compliance with the specifications and allows for the implementation of a functioning 11.1 kW wireless power transfer system prototype with efficient performance.
The thesis proposes a design process that ensures compliance with the SAE J2954TM specifications for the parallel-switched capacitor topology of the WPT3/Z2. Following this process guarantees normal operation of the circuit at a fixed operating frequency of 85 kHz within the specified circuit specifications, load range, and coupling coefficient range. Finally, a prototype of an 11.1 kW wireless power transfer system is implemented, demonstrating that the prototype meets the output specifications with a maximum efficiency of 90.9% when the vertical distance between the GA and VA coils varies from 140 mm to 210 mm, and the X-axis offset is 75 mm and the Y-axis offset is 100 mm.

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