Results 41 to 50 of about 18,520 (212)

Supercapacitor/battery hybrid energy storage unit for brushless DC motor operation

IET Electric Power Applications, 2020
In this study, a supercapacitor (SC)/battery hybrid energy storage unit (HESU) is designed with battery, SC and metal–oxide–semiconductor field‐effect transistors. Combined with the operation of brushless DC motor (BLDCM) and the output mode of the proposed HESU, the vector combinations that are suitable for different operation states of the BLDCM are ...
Tingna Shi, Haitian Lu, Yanfei Cao, Xinmin Li, Changliang Xia   +4 more
openaire   +1 more source

Brushless Operation of Axial-Flux Wound-Rotor Synchronous Machine Utilizing Third Harmonic

Mathematics
The brushless operation presented in this study is of an axial-flux wound-rotor synchronous machine (AFWRSM) which uses the third harmonic and the fundamental components of current.
Syed Mehdi Abbas, Junaid Ikram, Zafar Ayub, Tanveer Yazdan, Mudassir Raza Siddiqi   +4 more
doaj   +1 more source

Brushless Field Excitation Scheme for Wound Field Synchronous Machines

Applied Sciences, 2020
A new harmonic field excitation technique for the brushless operation of wound field synchronous machines (WFSMs) is proposed in this paper. The proposed scheme involves conventional three-phase and single-phase inverters operating at different ...
Syed Sabir Hussain Bukhari, Ghulam Jawad Sirewal, Faheem Akhtar Chachar, Jong-Suk Ro   +3 more
doaj   +1 more source

Brushless Wound Rotor Synchronous Machine Topology Using Concentrated Winding for Dual Speed Applications

IEEE Access, 2023
Permanent magnet (PM) machines have broad applicability and a rapid output rise due to their good power factor, high efficiency, and power density. However, with the recent high cost, unavailability, and demagnetization issues of PMs, the wound rotor ...
Sheeraz Ahmed, Mudassir Raza Siddiqi, Qasim Ali, Tanveer Yazdan, Asif Hussain, Jin Hur   +5 more
doaj   +1 more source

Comparative Analysis of Fault-Tolerant Dual-Channel BLDC and SR Motors

Energies, 2019
This article presents the results of a comparative analysis of two electronically commutated brushless direct current machines intended for fault-tolerant drives.
M. Korkosz, P. Bogusz, J. Prokop, B. Pakla, G. Podskarbi   +4 more
doaj   +1 more source

Energy Consumption Optimization in Trajectory Planning for Fuel Cell Hybrid Uavs Based On HMPC

Advanced Robotics Research, EarlyView.
The endurance limitation of multirotor drones is a critical challenge. This study adopts a hybrid power system of fuel cells and lithium‐ion batteries. Using Nondominated Sorting Genetic Algorithm II, it integrates trajectory planning with energy management optimization.
Xindi Wang, Jianyang Dong, Yongming Yao, Kaijin Hu, Jianxiong Cui, Yikai Luo, Jiawen Zhang, Shichao Niu   +7 more
wiley   +1 more source

Design and Optimization of Permanent Magnet Brushless Machines for Electric Vehicle Applications

Energies, 2015
In this paper, by considering and establishing the relationship between the maximum operating speed and d-axis inductance, a new design and optimization method is proposed.
Weiwei Gu, Xiaoyong Zhu, Li Quan, Yi Du
doaj   +1 more source

Improved current-regulated delta modulator for reducing switching frequency and low-frequency current error in permanent magnet brushless AC drives [PDF]

, 2005
The conventional current-regulated delta modulator (CRDM) results in a high current ripple and a high switching frequency at low rotational speeds, and in low-frequency current harmonics, including a fundamental current error, at high rotational speeds ...
Howe, D., Wipasuramonton, P., Zhu, Z.Q.
core   +1 more source

Design Optimization of a Variable Stiffness Robotic Gripper with Passive Restoration Fabricated by Multimaterial 3D Printing

Advanced Robotics Research, EarlyView.
A multimaterial robotic gripper fabricated via multimaterial 3D printing integrates conductive thermopolymer joints with flexible elastomeric components. Joule heating enables precise joint‐level stiffness modulation, enhanced by embedded temperature sensors, passive shape restoration, and active cooling, enabling versatile manipulation capabilities ...
Daniel Jee Seng Goh, Guo Liang Goh, Selvanther Sivarajan, Van Pho Nguyen, Wai Yee Yeong   +4 more
wiley   +1 more source

Design and Analysis of Single Inverter-Fed Brushless Wound Rotor Vernier Machine

IEEE Access, 2022
In this paper, a brushless wound rotor vernier machine (Bl-WRVM) with a single inverter configuration is proposed to achieve the brushless operation.
Sara Tariq, Junaid Ikram, Syed Sabir Hussain Bukhari, Qasim Ali, Asif Hussain, Jongsuk Ro   +5 more
doaj   +1 more source