Wireless power transfer (WPT) using magnetic resonance is the technology which could set human free from annoying wires. In fact, WPT adopts same basic theory has already been developed for at least 30 years with term inductive transfer. developing rapidly in recent years. At kilowatts level, distance increases several millimeters to hundred a grid load efficiency above 90%. The advances make very attractive electric vehicle (EV) charging applications both stationary and dynamic scenarios....

This paper proposes a novel dual-phase-shift (DPS) control strategy for dual-active-bridge isolated bidirectional DC-DC converter. The proposed DPS consists of phase shift between the primary and secondary voltages isolation transformer, gate signals diagonal switches each H-bridge. Simulation on 600-V/5-kW prototype shows that has excellent dynamic static performance compared to traditional phase-shift (single shift). In this paper, concept ldquoreactive powerrdquo is defined, corresponding...

This paper proposes a double-sided LCC compensation network and its tuning method for wireless power transfer (WPT). With the proposed topology method, resonant frequency is irrelevant with coupling coefficient between two coils also independent of load condition, which means that system can work at constant switching frequency. Analysis in domain given to show characteristics method. We propose tune realize zero voltage (ZVS) Primary-side switches. Simulation experimental results verified...

Wireless power transfer (WPT) is an emerging technology that can realize electric transmission over certain distances without physical contact, offering significant benefits to modern automation systems, medical applications, consumer electronics, etc. This paper provides a comprehensive review of existing compensation topologies for the loosely coupled transformer. Compensation are reviewed and evaluated based on their basic advanced functions. Individual passive resonant networks used...

Wireless power transfer system (WPTS)-based wireless electric vehicles, classified into roadway-powered vehicles (RPEVs) and stationary charging (SCEVs), are in the spotlight as future mainstream transportations. RPEVs free from serious battery problems such large, heavy, expensive packs long time because they get directly road while moving. The capacity, efficiency, lateral tolerance, electromagnetic field, air-gap, size, weight, cost of WPTSs have been improved by virtues innovative...

In this paper, an inductor–inductor–capacitor (LLC) resonant dc–dc converter design procedure for onboard lithium-ion battery charger of a plug-in hybrid electric vehicle (PHEV) is presented. Unlike traditional resistive load applications, the characteristic nonlinear and highly related to charging profiles. Based on features LLC characteristics profiles, considerations are studied thoroughly. The worst-case conditions primary-side zero-voltage switching (ZVS) operation analytically...

A double-sided LCLC-compensated capacitive power transfer (CPT) system is proposed for the electric vehicle charging application. Two pairs of metal plates are utilized to form two coupling capacitors wirelessly. The structure can dramatically reduce voltage stress on and maintain unity factor at both input output. 2.4-kW CPT designed with four 610-mm × copper an air gap distance 150 mm. experimental prototype reaches a dc-dc efficiency 90.8% output power. At 300-mm misalignment case, drops...

A more accurate battery state of charge (SOC) estimation method for electric drive vehicles is developed based on a nonlinear model and an extended Kalman filter (EKF) supported by experimental data. constructed separating the into open circuit voltage two-order resistance-capacitance model. EKF used to eliminate measurement process noise remove need prior knowledge initial SOC. hardware-in-the-loop test bench was built validate method. The results show that proposed can estimate SOC with...

The operation, design and control of an isolated bidirectional DC–DC converter for hybrid electric vehicle energy management applications are discussed. Different operation modes boundary conditions distinguished by phase-shift angle load conditions. absolute relative output voltage ripple was derived. dead-band effect safe operational area further investigated. relations between power leakage inductance switching frequency also presented. proposed simulated a prototype built tested....

With the development of electric drive vehicles (EDVs), state-of-charge (SOC) estimation for lithium-ion (Li-ion) batteries has become increasingly more important. Based on analysis some most popular model-based SOC methods, proportional-integral (PI) observer is proposed to estimate in EDVs. The structure PI analyzed, and convergence method with model errors verified. To demonstrate superiority compensation properties observer, simple-structure RC battery utilized Li-ion battery. validate...

This paper focuses on building an efficient, online, and intelligent energy management controller to improve the fuel economy of a power-split plug-in hybrid electric vehicle (PHEV). Based detailed powertrain analysis, battery current can be optimized using dynamic programming (DP). Three types drive cycles, i.e., highway, urban, urban (congested), are classified, six typical cycles analyzed simulated study all driving conditions. The online is built, which consists two neural network (NN)...

This paper compares the characteristics of series–series and double-sided Inductor-Capacitor-Capacitor (LCC) compensation topologies for electric vehicle (EV) wireless chargers. Both well-tuned mistuned two methods are analyzed in detail. The mistuning considered here is mainly caused by variations relative position between primary secondary sides. output power displacements compared both topologies, as well impacts load on performances topologies. voltage current stresses components also...

Permanent-magnet (PM) motors with both magnets and armature windings on the stator (stator PM motors) have attracted considerable attention due to their simple structure, robust configuration, high power density, easy heat dissipation, suitability for high-speed operations. However, current in industrial, residential, automotive applications are still dominated by interior permanent-magnet (IPM) because claimed advantages of not been fully investigated validated. Hence, this paper will...

This paper presents an integrated <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> <tex-math notation="LaTeX">$LCC$</tex-math></inline-formula> compensation topology for electric vehicle/plug-in hybrid vehicle wireless chargers. The effect of the coupling between additional coil and main on is studied. proposed will reduce size make system more compact with extremely high efficiency. basic characteristics are analyzed based...

There is a need for charging electric vehicles (EVs) wirelessly since it provides more convenient, reliable, and safer option EV customers. A wireless system using double-sided <italic xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">LCC</i> compensation topology proven to be highly efficient; however, the large volume induced by coils drawback. In order make compact, this paper proposes new method integrate compensated coil into main structure. With...

This paper proposes a four-plate compact capacitive coupler and its circuit model for large air-gap distance power transfer (CPT). The four plates are arranged vertically, instead of horizontally, to save space in the electric vehicle charging application. two that on same side placed close each other maintain coupling capacitance, they different sizes between primary secondary sides. is presented, considering all six capacitors. LCL compensation topology used resonate with provide high...

Three different control algorithms, traditional single-phase-shift control, dual-phase-shift (DPSC), and model-based phase-shift (MPSC), are implemented in a hardware setup compared for full-bridge-based isolated bidirectional dc-dc converter. The differences among their dynamic performance steady-state operations quantitatively analyzed. Experimental results showed good agreement with theoretical analysis. MPSC the best performance, while DPSC can eliminate reactive power under light-load...

This paper presents a simple circuit for balancing series-connected battery cells. The is composed of one low-voltage metal–oxide–semiconductor field-effect transistor (MOSFET) each cell and symmetrical multiwinding transformer group Only control signal needed all MOSFETs, energy can be directly transferred from higher voltage cells to lower A small capacitor added form resonant with the magnetizing inductance so that soft switching achieved in some operation range obtain high efficiency....

This paper proposes a continuous dynamic wireless power transfer system for electric vehicles that reduces pulsations during the charging process. Multiple rectangular unipolar coils are used at primary side as transmitters, and another coil works receiver secondary side. The transmitters placed closely together to reduce variation of magnetic fields along moving track receiver. structure induces self-coupling between adjacent transmitters. An LCC-compensated circuit topology is utilized,...