Optimized &lt;italic&gt;LCC&lt;/italic&gt;-Series Compensated Resonant Network for Stationary Wireless EV Chargers

Ramezani, Amin; Farhangi, Shahrokh; Iman‐Eini, Hossein; Farhangi, Babak; Rahimi, Ramin; Moradi, Gholam Reza

doi:10.1109/tie.2018.2840502

Cited by 105 publications

(45 citation statements)

References 42 publications

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“…From Equations (15)- (25) and the equivalent circuit as shown in Figure 5 and analysis in references [6][7][8]23], the proposed SS/S SHRC has the same characteristics as the FRC based on SS compensation topology. Capacitors C 11 and C 12 , in series with the primary inductor L 1 , play the same role as the primary compensation capacitor in full-bridge topology.…”

Section: Resonance Analysismentioning

confidence: 99%

“…If the transfer distance and the coil structure, which affect the value of M, are the same, output power of SHRC and FRC are only related to primary current i 1 powering the same load R ac . If the input voltage of SHRC is twice of the input voltage of FRC, the primary currents of both are the same based on Equation (24) and analysis in [6][7][8]23]. By regarding the circuit parts inside the dotted rectangle in both Figure 1a,b as two-port network and if the input currents of both topologies are the same, the efficiency of these two networks are equal to each other.…”

Section: Comparison Of Ss/s Shrc and Frcmentioning

confidence: 99%

“…Inductive power transfer (IPT) systems transfer electric power across an air gap by magnetic coupling and produces comparative advantages over transfer with physical contact. It has been widely used in commercial and industrial applications where convenience and safety are imperative, such as household apparatuses [1], biomedical applications [2], and electric vehicle (EV) charging [3][4][5][6][7][8][9]. Different from strongly coupled systems, the mutual coupling of IPT systems is generally weak.…”

Section: Introductionmentioning

confidence: 99%

“…In order to reduce the size of the inductors in LCL, LCC was proposed in [22], which had high misalignment tolerance and load independence characteristics [15]. LCC was further optimized to suitable for EVs charging in [7]. An efficient double-sided LCC for IPT system was proposed in [23], and the dead time optimization of this double-sided LCC topology for power and efficiency enhancement were further studied in [24].…”

Section: Introductionmentioning

confidence: 99%

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Series-Series/Series Compensated Inductive Power Transmission System with Symmetrical Half-Bridge Resonant Converter: Design, Analysis, and Experimental Assessment

et al. 2019

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In order to compensate the large leakage inductance and improve the power transmission capacity, capacitors are widely used in inductive power transfer (IPT) systems, which results in high voltage or current stresses in the resonant tanks and limits higher volt-ampere (VA) rating of the transfer power, especially in medium and low frequency applications. This paper presents a symmetrical half-bridge resonant converter (SHRC) for series-series/series compensated IPT systems with detailed analysis and design. It operates at a relatively low frequency of 12.5 kHz, suitable for IGBT applications. The theoretical analysis shows that, compared with full-bridge resonant converter (FRC) for IPT, the symmetrical half-bridge resonant converter achieves a higher efficiency. Simulation and a prototype of 1500 W power output were built to verify the theoretical analysis. The experimental results show that the power loss of SHRC is 39.7 W while that of FRC is 79.4 W, which is consistent with the theoretical analysis. The global efficiency of the IPT based on the proposed converter is 91.6%.

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Section: Resonance Analysismentioning

confidence: 99%

Section: Comparison Of Ss/s Shrc and Frcmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Series-Series/Series Compensated Inductive Power Transmission System with Symmetrical Half-Bridge Resonant Converter: Design, Analysis, and Experimental Assessment

et al. 2019

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“…k i , α, and β are empirical constants determined by the core material characteristic. k i = 0.33, α = 1.98, and β = 1.64. f, B, and V are operating frequency, flux density and volume of the core [26]. By considering the dielectric characteristic of capacitors, the loss of capacitors is given by Equation (51), where tan δ(f ) is the dissipation factor of capacitors and I indicate the current stress on the capacitors [26].…”

Section: Efficiency and Power Loss Calculationmentioning

confidence: 99%

A Family of Bidirectional DC–DC Converters for Battery Storage System with High Voltage Gain

et al. 2019

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In low power energy storage systems, to match the voltage levels of the low-voltage battery side and high-voltage direct current (DC) bus, a high voltage gain converter with bidirectional operation is required. In this system, the cost effectiveness of the design is a critical factor; therefore, the system should be designed using a small number of components. This paper proposes a set of bidirectional converters with high voltage gain range based on the integration of the boost converter with a Ćuk converter, single ended primary inductor converter (Sepic), and buck-boost converter. The proposed converters consist of a small number of components with a high voltage gain ratio. Detailed comparisons are made with respect to the operating mode, number of components, voltage, and current ripple and efficiency. The efficiency of proposed converters are higher than the conventional converters in entire power range, and 6% higher efficiency can be achieved in large duty cycle by calculating loss analysis. To verify performances of the proposed converters, three 200-W prototypes of the converters are developed under the same experimental conditions. The results revealed that converter I exhibits the highest efficiency in the boost mode (92%) and buck mode (92.2%). The experimental results are shown to verify the feasibility and performances of the set of converters.

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Visual map of power transmission of magnetically coupled wireless power transfer system based on independent analysis of transmitter and receiver sides

Takeda

Koseki

2021

Electrical Engineering Japan

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A wireless power transfer (WPT) technology has recently garnered significant attention owing to its advantages of removing wire and mitigating charging concerns. In a conventional resonance-based compensation circuit design, the power transmission characteristics strongly depend on the coupling condition of the transmitter and receiver coils. Therefore, some non-resonance-based designs have been proposed. However, they are complicated and lack the resonance condition; therefore, circuit designers cannot comprehensively understand their power transmission characteristics. This study proposes a visualization method for the power transmission characteristics based on a divided analysis of WPT systems. The proposed visual map, which consists of simple circles and lines, can help in intuitively understanding the tendency of WPT and evaluate the transmission power of the compensation circuits, including the non-resonance condition. The tendency obtained from the visual map was validated via numerical simulations and experiments. The experimental results were significantly consistent with the intuitively estimated tendency and the evaluated power transmission.

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Optimized <italic>LCC</italic>-Series Compensated Resonant Network for Stationary Wireless EV Chargers

Cited by 105 publications

References 42 publications

Series-Series/Series Compensated Inductive Power Transmission System with Symmetrical Half-Bridge Resonant Converter: Design, Analysis, and Experimental Assessment

Series-Series/Series Compensated Inductive Power Transmission System with Symmetrical Half-Bridge Resonant Converter: Design, Analysis, and Experimental Assessment

A Family of Bidirectional DC–DC Converters for Battery Storage System with High Voltage Gain

Visual map of power transmission of magnetically coupled wireless power transfer system based on independent analysis of transmitter and receiver sides

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