本論文針對電動車長時間停放於公司，研製電動車用雙向非接觸式感應充電墊，系統僅須在電動車離開前充足電能，而在充電過程中可以提供電能作為電能調度。本文首先探討常見激勵電源架構，以雙向全橋電路作為激勵電源，並由數位訊號處理器產生互補式PWM訊號激勵全橋驅動電路。接著以雙埠式網絡分析諧振網絡，從轉移函數的角度針對不同架構之特性進行相互比較，探討諧振網絡的諧振點與輸入阻抗，再推導出輸入阻抗與輸出功率公式，最後選擇LCC諧振網絡作為此系統諧振架構，以提升感應電能傳輸能力以及效率。接續設計降壓式充電電路對磷酸鋰鐵電池模組充電，搭配電壓與電流感測電路，並使用數位訊號處理器撰寫程式實現定電流-定電壓充電法。感應充電墊系統為對稱結構，因此可直接由電池模組放電，實現反向電能傳輸。最後經實驗量測結果，在間距7公分下，系統最高傳輸功率為450.18 W，系統最高效率為69.1%。

The thesis is aimed to design the long-term parking of electric vehicles in the company. The bidirectional contactless inductive charging pad system can provide the energy as the energy dispatching during the charging time. This system uses a bidirectional full-bridge circuit as the excitation power supply. Complementary PWM signals are generated by a digital signal processor to excite the full-bridge drive circuit. Then, two-port network is used to analyze the resonant circuit topologies. We discuss the resonance point and input impedance, and derive the formula of input impedance and output power. LCC resonant network is selected to improve the inductive power transfer capability and efficiency. We design a buck charging circuit to charge the lithium iron phosphate battery module, and use a digital signal processor to realize the constant-current constant-voltage charging method. The inductive charging pad system structure is symmetrical, so it can be directly discharged by the battery module to achieve reverse power transmission. Finally, through experimental measurements, the maximum transmission power of the system is 450.18 W, and the highest transmission efficiency of system is 69.1% with a 7 cm air gap.

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