Power Electronics and Power Conversion-Related Applications of Micro Energy Devices

A special issue of Micromachines (ISSN 2072-666X). This special issue belongs to the section "D:Materials and Processing".

Deadline for manuscript submissions: closed (28 February 2022) | Viewed by 6371

Special Issue Editors


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Guest Editor
Department of Electrical Engineering, I-Shou University, Kaohsiung City 84001, Taiwan
Interests: power electronics; switching power converter; LED driver
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Guest Editor
Department of Electrical Engineering, I-Shou University, Kaohsiung City 84001, Taiwan
Interests: sliding mode control; intelligent control; grey theory; power electronic converters
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Guest Editor
Department of Electrical Engineering, I-Shou University, Kaohsiung City 84001, Taiwan
Interests: inverters; photovoltaic power systems; LED drivers
Special Issues, Collections and Topics in MDPI journals

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Guest Editor
Department of Electrical Engineering, I-Shou University, Kaohsiung City 84001, Taiwan
Interests: networked control system; fault tolerant control; descriptor systems; optimization problems
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

The power conversion of micro energy devices converts available energy into more useful forms, such as converting mechanical, chemical, thermal, kinetic energy, solar energy, or wind power into electricity, propulsion, or cooling. Typical micro energy conversion devices include micro heat engines, micro turbines, micro fuel cells, vibration energy harvesters, micro rocket engines, micro coolers, and so on. In addition, microelectromechanical systems are ultra-compact systems composed of micromechanical components such as sensors, actuators and electronic circuits on a silicon wafer using the microfabrication and manufacturing technology. The microelectromechanical systems contribute to the ultra-miniaturization of various products, such as the digital microdisplays of projectors, nozzles inside the heads of ink-jet printers, piezoelectric ceramic actuators, and various sensors such as gyroscopes, pressure sensors, acceleration sensors, and flow rate sensors. In addition, energy harvesting is a process from which energy can be obtained, captured, and stored from external sources and devices for use in small wireless autonomous devices, wearable electronic devices, and wireless sensor networks. Power electronics is the application of solid-state electronics and the latest semiconductor technology for harvesting, converting, and controlling energy and power. Accordingly, this Special Issue aims to invite original research papers and review articles that focus on the recent developments and technology for power electronics and power conversion-related applications involving micro energy devices and microelectromechanical systems.

Prof. Dr. Chun-An Cheng
Prof. Dr. Hung-Liang Cheng
Prof. Dr. En-Chih Chang
Prof. Dr. Chien-Hsuan Chang
Dr. Ching-Min Lee
Guest Editors

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Keywords

  • micro energy devices
  • microelectromechanical systems
  • micro power generation
  • micro heat engines
  • micro fuel cells
  • micro energy harvesting
  • micro propulsion
  • micro coolers

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Related Special Issue

Published Papers (2 papers)

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Research

22 pages, 7244 KiB  
Article
Low-Stress and Optimum Design of Boost Converter for Renewable Energy Systems
by Kashmala Salim, Muhammad Asif, Farman Ali, Ammar Armghan, Nasim Ullah, Al-Sharef Mohammad and Ahmad Aziz Al Ahmadi
Micromachines 2022, 13(7), 1085; https://doi.org/10.3390/mi13071085 - 8 Jul 2022
Cited by 14 | Viewed by 2130
Abstract
This paper examines the design and analysis of DC–DC converters for high-power and low-voltage applications such as renewable energy sources (RESs) and comparisons between converters based on switch stresses and efficiency. The RESs including photovoltaic arrays and fuel cell stacks must have enhanced [...] Read more.
This paper examines the design and analysis of DC–DC converters for high-power and low-voltage applications such as renewable energy sources (RESs) and comparisons between converters based on switch stresses and efficiency. The RESs including photovoltaic arrays and fuel cell stacks must have enhanced output voltages, such as 380 V DC in the case of a full bridge inverter or 760 V DC in the case of a half bridge inverter, in order to interface with the 220 V AC grid-connected power system. One of the primary difficulties in developing renewable energy systems is enhancing DC–DC converters’ efficiency to enable high step-up voltage conversion with high efficiency and low voltage stress. In the present work, the efficiency, current, and voltage stress of switches of an isolated Flyback boost converter, simple DC–DC Boost converter, and an Interleaved boost converter, are explored and studied relatively. The most suitable and optimized options with a high efficiency and low switching stress are investigated. The more suitable topology is designed and analyzed for the switch technology based on the Silicon-Metal Oxide Semiconductor Field Effect Transistor (Si-MOSFET) and the Gallium Nitride-High Electron Mobility Transistor (GaN-HEMT). The Analytical approach is analyzed in this paper based on efficiency and switching stress. It is explored that GaN HEMT based Flyback boost converter is the best. Finally, the future direction for further improving the efficiency of the proposed boost converter is investigated. Full article
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17 pages, 3796 KiB  
Article
Commutation Torque Ripple Reduction Strategy of Brushless DC Motor Drives Based on Boosting Voltage of DC-Link Small Capacitor
by Xinmin Li, He Yuan, Wei Chen, Lihong Yu and Xin Gu
Micromachines 2022, 13(2), 226; https://doi.org/10.3390/mi13020226 - 29 Jan 2022
Cited by 3 | Viewed by 3013
Abstract
Based on the brushless DC motor system with DC-link small capacitance powered by a single-phase AC power source, a boosting DC-link voltage strategy to reduce the commutation torque ripple of brushless DC motors is proposed in this paper. The control strategy utilizes the [...] Read more.
Based on the brushless DC motor system with DC-link small capacitance powered by a single-phase AC power source, a boosting DC-link voltage strategy to reduce the commutation torque ripple of brushless DC motors is proposed in this paper. The control strategy utilizes the special topology of the motor system to boost the DC-link capacitor voltage in a specific zone during the non-commutation period. During the commutation period, the high voltage of the DC-link capacitor is released to meet the voltage requirement of the brushless DC motor during commutation. In order to reduce the commutation torque ripple and ensure the normal operation of the brushless DC motor, each rectifier cycle is divided into three zones according to the characteristics of the periodic change of the rectifier output voltage. Different operation modes are proposed for different zones. In DC-link capacitor boost voltage mode, the DC-link capacitor boosts the voltage to meet the voltage of the motor demand during the commutation period for achieving the purpose of reducing the commutation torque ripple. In this paper, the controller of the brushless DC motor system is designed and the experimental platform is built. The experimental results verified the correctness of the theoretical analysis and the feasibility of the proposed method. Full article
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