METHOD OF MODELING EQUIVALENT CIRCUIT OF MAGNETIC COUPLED COIL CIRCUIT IN WHICH TX COIL AND RX COIL ARE MISALIGNED IN CONDUCTIVE MEDIUM AND WIRELESS POWER TRANSFER SYSTEM USING THE SAME
An equivalent circuit modeling method for a magnetic coupled coil circuit comprises the steps of: calculating an eddy current impedance based on a first parameter representing the structural characteristics of a magnetic coupled coil circuit, a second parameter indicating the characteristics of a co...
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Zusammenfassung: | An equivalent circuit modeling method for a magnetic coupled coil circuit comprises the steps of: calculating an eddy current impedance based on a first parameter representing the structural characteristics of a magnetic coupled coil circuit, a second parameter indicating the characteristics of a conductive medium, and a third parameter indicating the misalignment characteristics between a transmitting coil and a receiving coil included in the magnetic coupled coil; calculating a Z-parameter of the magnetic coupled coil circuit by reflecting the eddy current impedance; and modeling a two-port equivalent circuit of the magnetic coupled coil circuit based on the Z-parameter. The eddy current impedance includes a first eddy current impedance (Z), a second eddy current impedance (Z), and a third eddy current impedance (Z). The third eddy current impedance is calculated by performing line integral on a tangential component electric field of the receiving coil. According to the present invention, it is possible to simply and accurately calculate the power transfer efficiency of a magnetic coupled coil circuit.
자기 결합 코일 회로의 등가 회로 모델링 방법은 자기 결합 코일 회로의 구성 특성을 나타내는 제1 파라미터, 전도성 매질의 특성을 나타내는 제2 파라미터, 및 상기 자기 결합 코일에 포함된 송신 코일과 수신 코일 사이의 오정렬 특성을 나타내는 제3 파라미터를 기초로 와전류 임피던스를 산출하는 단계, 상기 와전류 임피던스를 반영하여 상기 자기 결합 코일 회로의 Z-파라미터를 산출하는 단계, 및 상기 Z-파라미터를 기초로 상기 자기 결합 코일 회로의 2포트 등가 회로를 모델링하는 단계를 포함한다. 상기 와전류 임피던스는 제1 와전류 임피던스(Z11_eddy), 제2 와전류 임피던스(Z22_eddy), 및 제3 와전류 임피던스(Z21_eddy)를 포함한다. 상기 제3 와전류 임피던스는 상기 수신 코일의 탄젠셜(tangential) 성분 전기장을 선적분하여 산출된다. |
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