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Improved Interopera...
Improved Interoperability Evaluation Method for Wireless Charging Systems Based on Interface Impedance
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- Yang, Guang (författare)
- Harbin Institute of Technology
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- Song, Kai (författare)
- Harbin Institute of Technology
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- Huang, Xiaoliang, 1985 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Wang, Chao (författare)
- Harbin Institute of Technology
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Huang, Xiaohua (författare)
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Li, Jin (författare)
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- Zhu, Chunbo (författare)
- Harbin Institute of Technology
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(creator_code:org_t)
- 2021
- 2021
- Engelska.
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Ingår i: IEEE Transactions on Power Electronics. - 0885-8993 .- 1941-0107. ; 36:8, s. 8588-8592
- Relaterad länk:
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https://research.cha...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- The interoperability between the vehicle assembly (VA) and ground assembly (GA) of wireless charging systems has been specified in international standards. SAE J2954 first proposed an interoperability evaluation method based on interface impedance. However, the impedance measurement is challenging at high frequency since the phase difference between the voltage and current is not easy to measure accurately, especially when it is close to 90. Small errors in phase angle measurement are amplified in impedance calculation due to the sine/cosine function. This letter proposes an impedance measurement method using the power decomposition algorithm. By decomposing the input power into two orthogonal components, the impedance angle can be calculated without directly measuring the phase difference between the voltage and current. Thus, the measurement results of the impedance angle do not introduce errors. With the proposal, the high-cost probe or complex high-precision phase difference measurement circuit is not needed. The experimental results show that the conventional methods maximum relative error reaches 80%, making interoperability hard to determine. Reversely, with the proposed method, the relative error of impedance measurement is reduced to less than 10%.
Ämnesord
- TEKNIK OCH TEKNOLOGIER -- Medicinteknik -- Medicinsk laboratorie- och mätteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Medical Engineering -- Medical Laboratory and Measurements Technologies (hsv//eng)
- TEKNIK OCH TEKNOLOGIER -- Elektroteknik och elektronik -- Signalbehandling (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Electrical Engineering, Electronic Engineering, Information Engineering -- Signal Processing (hsv//eng)
- TEKNIK OCH TEKNOLOGIER -- Elektroteknik och elektronik -- Annan elektroteknik och elektronik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Electrical Engineering, Electronic Engineering, Information Engineering -- Other Electrical Engineering, Electronic Engineering, Information Engineering (hsv//eng)
Nyckelord
- power decomposition
- Phase measurement
- impedance measurement
- wireless charging
- Current measurement
- Interoperability
- Interoperability
- Impedance measurement
- interface impedance
- Voltage measurement
- Power measurement
- Impedance
Publikations- och innehållstyp
- art (ämneskategori)
- ref (ämneskategori)
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