Wireless Power and Data Transfer via a Common Inductive Link Using Frequency Division Multiplexing

Wu, Jiande; Zhao, Chongwen; Lin, Zhengyu; Du, Jingshan S.; Hu, Yihua; He, Xiangning

doi:10.1109/tie.2015.2453934

Cited by 168 publications

(67 citation statements)

References 31 publications

(26 reference statements)

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“…R p is the equivalent load. To achieve a soft switching operating mode, switches S1-S4 should commutate at the instance when the current i p crosses zero [28,29]. In the voltage feedback control loop, u ref is the reference voltage and u c is the output voltage of the Buck converter which is sensed by a voltage divider with a ratio of k and subtracted from the reference voltage u ref .…”

Section: Operating Principles Of Voltage-controlled Buck-invertermentioning

confidence: 99%

Bifurcation Phenomena Studies of a Voltage Controlled Buck-Inverter Cascade System

Tang

Dai

et al. 2017

Energies

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This paper studies the complex bifurcation phenomena of a voltage-controlled Buck-inverter cascade system. A state-flow chart is drawn to illustrate the complex relations among the linear operating modes. Combined with the state transition function of each mode, the time response of the system can be obtained. For period-one steady state, the periodic mapping function and its fixed point are further derived, on the basis of which the Jacobi matrix is developed and its maximum eigenvalue is analyzed to understand the bifurcation diagram. By globally analyzing the state space using this cell mapping method, the coexistence of attractors is revealed in the Buck-inverter system. All theoretical results have been verified experimentally on a prototype system. The results obtained can be used for guiding the design and analysis of the Buck-inverter system. The analyzing method can be helpful for studying other power electronics systems with compound topologies.

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Section: Operating Principles Of Voltage-controlled Buck-invertermentioning

confidence: 99%

Bifurcation Phenomena Studies of a Voltage Controlled Buck-Inverter Cascade System

Tang

Dai

et al. 2017

Energies

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“…The SWTPI is a data transmission method for resonant WPT systems that uses coils and compensation networks originally designed for power transmission [18]. In this method, no additional antennas are required.…”

Section: Overview Of Swtpimentioning

confidence: 99%

“…Position II was chosen in a previous work [17][18][19][20][21][22][23]. When Z3 is an open circuit (i.e., when the resonant compensation network is compensated by series resonance), the crosstalk at the two coupling positions is consistent.…”

Section: Selection Of Compensation Network and Coupling Positionmentioning

confidence: 99%

“…Previous studies [17,18] have examined the crosstalk at the power frequency with coupling position II. However, the crosstalk estimation formulas in these papers demonstrated that when the inductances of the coupled coil and signal coupling inductor are predetermined, the crosstalk between the power and information channels cannot be adjusted and will increase with the output power at the power frequency, which is not suitable for high-power applications.…”

Section: Crosstalk At the Power Frequency Based On The Lcc Compensatimentioning

confidence: 99%

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Crosstalk Study of Simultaneous Wireless Power/Information Transmission Based on an LCC Compensation Network

Wang

Liao

et al. 2017

Energies

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Abstract:The effective simultaneous wireless transmission of power and information (SWTPI) is an issue of great interest. To reduce the crosstalk between power and information channels while increasing the transmission air gap and power level, we introduce an inductor-capacitor-capacitor (LCC) compensation network for an SWTPI system. First, the crosstalk between the power and information channels is analyzed. An effective parametric design method is then proposed for the LCC compensation network, which is analyzed theoretically to minimize the crosstalk. Finally, experiments are conducted at 1000 W and 115.2 kbps with an air gap of 100 cm to verify whether the proposed structure and design method of the LCC compensation network are suitable for the SWTPI.

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“…In the existing studies, some isolation strategies have been adopted. Wu, et al isolated interference by reducing the signal coupling inductances and magnifying the data carrier, while more power is consumed by the data transmission [20]. Hairi, et al tried to send and receive data during the inverter non-switching period in synchronization with the rising or falling edge of the inverter voltage to avoid the power interference on the data link [21].…”

Section: Introductionmentioning

confidence: 99%

An Interference Isolation Method for Wireless Power and Signal Parallel Transmissions on CPT Systems

Zhou¹,

Su²,

Xie³

et al. 2017

Journal of Power Electronics

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A novel interference isolation method is proposed by using several designed coils in capacitive power transfer systems as isolation impedances. For each designed coil, its stray parameters such as the inter-turn capacitance, coil resistance and capacitance between the coil and the core, etc. are taken into account. An equivalent circuit model of the designed coil is established. According to this equivalent circuit, the impedance characteristic of the coil is calculated. In addition, the maximum impedance point and the corresponding excitation frequency of the coil are obtained. Based on this analysis, six designed coils are adopted to isolate the interference from power delivery. The proposed method is verified through experiments with a power carrier frequency of 1MHz and a data carrier frequency of 8.7MHz. The power and data are transferred parrallelly with a data carrier attenuation lower than -5dB and a power attenuation on the sensing resistor higher than -45dB.

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Wireless Power and Data Transfer via a Common Inductive Link Using Frequency Division Multiplexing

Cited by 168 publications

References 31 publications

Bifurcation Phenomena Studies of a Voltage Controlled Buck-Inverter Cascade System

Bifurcation Phenomena Studies of a Voltage Controlled Buck-Inverter Cascade System

Crosstalk Study of Simultaneous Wireless Power/Information Transmission Based on an LCC Compensation Network

An Interference Isolation Method for Wireless Power and Signal Parallel Transmissions on CPT Systems

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