A5009540666- Advanced DC-DC Converters
- Electric Motor Design and Analysis
- Multilevel Inverters and Converters
- Wireless Power Transfer Systems
- Advanced Battery Technologies Research
- Induction Heating and Inverter Technology
- Magnetic Bearings and Levitation Dynamics
- Microgrid Control and Optimization
- Energy Harvesting in Wireless Networks
- Magnetic Properties and Applications
- Electric and Hybrid Vehicle Technologies
- Silicon Carbide Semiconductor Technologies
- Innovative Energy Harvesting Technologies
- Sensorless Control of Electric Motors
- Electric Vehicles and Infrastructure
- Power Systems and Renewable Energy
- Experimental Learning in Engineering
- Real-time simulation and control systems
- Electromagnetic Compatibility and Noise Suppression
- Vehicle Dynamics and Control Systems
- GaN-based semiconductor devices and materials
- Industrial Technology and Control Systems
- Electrical Contact Performance and Analysis
- Electromagnetic Launch and Propulsion Technology
- HER2/EGFR in Cancer Research
University of California, Merced
2024-2025
University of California, Davis
2025
Hong Kong Polytechnic University
2015-2024
Shaanxi University of Science and Technology
2024
Polytechnic University
2018-2023
Brigham Young University
2023
National Institution For Youth Education
2022
University of Maryland, College Park
2018
John Wiley & Sons (United States)
2018
Tuen Mun Hospital
2016
Battery monitoring is vital for most electric vehicles (EVs), because the safety, operation, and even life of passenger depends on battery system. This attribute exactly major function battery-management system (BMS)-to check control status within their specified safe operating conditions. In this paper, a typical BMS block diagram has been proposed using various functional blocks. The state charge (SOC) estimation implemented Coulomb counting open-circuit voltage methods, thereby...
The objective of this paper is to propose a new inverter topology for multilevel voltage output. This designed based on switched capacitor (SC) technique, and the number output levels determined by SC cells. Only one dc source needed, problem balancing avoided as well. structure not only very simple easy be extended higher level, but also its gate driver circuits are simplified because active switches reduced. operational principle targeted modulation strategies presented, power losses...
Two improved torque-sharing functions for implementing torque ripple minimization (TRM) control are presented in this paper. The proposed dependent on the turn-on angle, overlap and expected torque. This study shows that a given angle have significant effects upon speed range, maximum speed, copper loss, efficiency. Hence, genetic algorithm is used to optimize at various demands operating under TRM order maximize range minimize loss. Furthermore, four derive optimized results. At same time,...
The series battery string or supercapacitor automatic equalization system based on quasi-resonant switched-capacitor converter is presented in this paper. It realizes the zero-voltage gap between cells and allows maximum energy recovery a system. not only inherits advantage of conventional cell balancing system, but also overcomes drawback conduction loss, switching finite voltage difference among cells. All switches are MOSFET controlled by just pair complementary signals synchronous...
The method of the optimization design with multi-objectives for switched reluctance motors (SRMs) in electric vehicles (EVs) is proposed this paper. It desired that EVs have high torque, efficiency, and torque density. Thus, developed function selected as correct compromise between maximum average per copper loss, motor lamination volume, by using three weight factors base values. stator rotor pole arc angles are optimized variables. Furthermore, authors also discuss requirements some...
The increase of transmission frequency reveals more merits than low- or medium-frequency distribution among different kinds power applications. High-frequency inverter serves as source side in high-frequency ac (HFAC) system (PDS). However, it is complicated to obtain a with both simple circuit topology and straightforward modulation strategy. A novel switched-capacitor-based cascaded multilevel proposed this paper, which constructed by switched-capacitor frontend H-Bridge backend. Through...
A series of switched-capacitor (SC) cell balancing circuits is proposed for rechargeable energy storage devices like battery and supercapacitor strings in this paper. Taking a basic SC-based unit as an equivalent resistor, the behavioral models are developed to evaluate their performance. Comparing with existing circuits, main advantage that speed independent both number cells initial mismatch distribution voltages. In order improve operation performance respect minimizing resistance,...
As the electronic interfaces between distributed energy resources and electrical network, power converters play a vital role in voltage stabilization conversion. So far, various converter control methods have been developed. Now it is urgently needed to compare understand these approaches support smart microgrid pyramid. This article provides an overview of state-of-the-art parallel applications. The most important schemes address existing challenges, including concentrated control,...
A switched-capacitor-based step-up resonant converter is proposed. The voltage conversion of the converters in mode. By adding a different number switched-capacitor cells, output ratios can be obtained. ratio from 2 to any whole therefore generated by these switching-capacitor techniques. tank used assist zero-current switching hence current spike, which usually exists for classical eliminated. Both high-frequency operations and high efficiency are possible. Generalized analysis design...
A family of switched-capacitor resonant circuits using only two transistors is presented. The circuit operates under zero-current switching and, therefore, the loss zero. It also offers a wide choice voltage conversions including fractional as well multiple and inverted conversion ratios.
A new quadratic boost converter is presented in this study. Compared with the conventional converter, proposed has feature of lower buffer capacitor voltage stress. This advantage very valuable for high and high-voltage gain applications. The also employed only one active switch two LC (inductor-capacitor) filters. Detailed analysis its continuous current mode operation discontinuous both are presented. In addition, modelling developed prototype circuit built experimental results confirm...
A series-parallel switched-capacitor (SC) power converter is reconfigured as a new voltage equalization circuitry for series-connected batteries or supercapacitors in this paper. The model of the equalizer derived and successfully used to analyze speed energy loss. It very useful tool design SC-based systems meet different balancing requirements. analysis modeling methods can be extended other voltage-balancing systems. prototype built experimental results are provided confirm theoretical method.
This paper presents three criteria for evaluating the motoring operations of switched reluctance motor (SRM) drives electric vehicles (EVs). They imply torque, copper loss, and torque ripple, respectively. The effects turn-off turn-on angles on these are investigated under hysteresis current control. To fulfill best operation, consequently, multiobjective optimization function is developed by using weight factors groups base values: correct balance between maximum average per root mean...
This paper proposes a switched-capacitor multilevel inverter for high-frequency ac power distribution systems. The proposed topology produces staircase waveform with higher number of output levels employing fewer components compared to several existing inverters in the literature. is beneficial where asymmetric dc voltage sources are available, e.g., case renewable energy farms based microgrids and modern electric vehicles. Utilizing available as inputs single solves major problem connecting...
In this paper, a novel high step-up pulse width modulation dc-dc converter integrating coupled-inductor and switched-capacitor (SC) techniques is presented. The proposed consists of synchronous rectification Boost unit multiple coupled-inductor-SC units. Its structure can therefore be easily extended for ultrahigh voltage gain. diodes employed in the operate under soft-switching condition by utilizing leakage inductance coupled inductor. Low-voltage-rated transistors used to improve...
A 13-level inverter based on switched-capaci-tor technique is proposed in this article. It consists of ten transistors, four diodes, and capacitors with self-balanced voltages. The transistors form two H-bridges one half-bridge resulting simple structure easy design gate drivers. With a hybrid level-shifted phase-shifted pulsewidth modulation algorithm, voltage ripples low harmonic components output are suppressed simultaneously. Compared the existing solutions, has simpler lower cost per...
This letter describes two improved 13-level inverters based on switched-capacitor. Compared with their original structure, which is published recently, one less high-voltage capacitor required in the proposed and blocking voltage of inverting half-bridge reduced by half. In addition, new inherit various advantages such as a high boost factor 6, self-balanced voltages, ripples. Circuit description, operation principle, hybrid PWM modulation, ripples are analyzed feasibility finally verified...
High power LED provides a high luminous and efficient for using as lighting source. Because of the advent device, becomes one new trends in industry. In this paper, circuit design based on constant current flyback heat distribution matter are discussed. The aims work provide solution to replace traditional device.
The history of the centralized and distributed power system is introduced far away from being first built by Edison, which started confrontation between ac dc system. Although has dominated for a long century because easy transmission some other benefits, still gave good performances attracted more attention during past three decades. This paper will discuss current developing stage following contents: basic structure characteristics; benefits distribution system; development techniques...
This paper presents a new switched reluctance motor (SRM) with wide speed range for the application of electric vehicles. It has an in-wheel structure direct drive and multiple teeth per stator pole to enhance output torque. Also, number rotor poles is more than that teeth. A 6/16 three-phase SRM concepts multi-teeth been proposed analysis. The torque performance topology proven by theoretical Moreover, design formula introduced novel combination poles. parameters are optimized genetic...
This study is to propose a multi-input converter which designed based on switched-capacitor instead of magnetic components. The number its inputs can be any figure. output voltage level the summation multiple input levels share with common neutral. There no need have level-shift or boost-strap for adjusting inputs. active switches and capacitors required both are equal sources. Only pair complementary pulse signals needed control all these switches. operated under high frequency....