A5045269107- Electric Motor Design and Analysis
- Magnetic Bearings and Levitation Dynamics
- Magnetic Properties and Applications
- Sensorless Control of Electric Motors
- Multilevel Inverters and Converters
- Evolutionary Algorithms and Applications
Southeast University
2022-2025
Aiming at the problems of existing hybrid-magnetic-circuit variable flux memory machine (HMC-VFMM), such as weak regulation (FR) capability and low efficiency in high-speed region, this article proposes a novel separated HMC-VFMM (SHMC-VFMM), which innovatively arranges series magnetic circuit on <italic xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">d</i> -axis parallel xmlns:xlink="http://www.w3.org/1999/xlink">q</i> -axis. The SHMC design can...
Variable flux memory machine (VFMM) applying low coercivity force (LCF) permanent magnets (PMs) is suitable for electric vehicles (EVs) since its air-gap can be adjusted easily. In this article, a novel series magnetic circuit VFMM with self-flux leakage paths (SMC-VFMM-SLP) proposed, in which the design concept of introduced to enhance regulation (FR) range and keep high torque density simultaneously. The control leakages based on magnetization states (MSs) employed LCF PMs. thus under...
Variable flux memory machine (VFMM) with a wide speed range and high efficiency has potential application in electric vehicles (EVs) because the magnetization state (MS) of employed low coercivity force (LCF) permanent magnets (PMs) can be flexibly adjusted by applying short time current pulse. However, it is very difficult for existing VFMMs to balance their torque output capacities operation abilities. In this paper, new hybrid magnetic circuit (HMC) VFMM self-flux leakage paths proposed...
Variable flux memory machine (VFMM) can dynamically adjust its air-gap magnetic field by changing the magnetization states of employed low corrective force (LCF) permanent magnets (PMs). Due to demagnetization risk LCF PMs under armature current, it is necessary analyze their stability in various operation states. The series hybrid magnet VFMM (SHM-VFMM) inverter open-circuit (IOC) fault studied this article. Firstly, topology investigated SHM-VFMM introduced, and field-circuit coupled model...
In conventional series hybrid magnet variable flux memory machine (SHM-VFMMs), LCF PMs are reversely protected by high corrective force (HCF) PMs, which inevitably limits the regulation range. To address this issue, a new SHM-VFMM with spatially separated and HCF is proposed. The ranges of proposed machines investigated compared using magnetic circuit method to reveal wide range mechanism machine. Moreover, basic electromagnetic characteristics two verify feasibility superiority...
In this article, the rules and internal structural relationship of mutual evolution among different magnetic circuit (MC) structures hybrid PMs variable flux memory machines (VFMMs) are studied, a topology construction method based on MC structure is proposed. This can rapidly expand topological database in form multiples, which provides sufficient population for seeking that achieve optimal balance various electromagnetic characteristics VFMM. The symmetrical electromotive force...
This paper proposes a novel parallel magnetic circuit variable flux machine by employing leakage paths (PMC-VFMFLP), improving the torque density, regulation range, and speed operation range of conventional PMC-VFMs with barriers. Both high coercivity force (HCF) low (LCF) permanent magnets (PMs) are applied in this machine. The key to proposed design lies position relative parameters two kinds PMs. finite-element analysis (FEA) is adopted validate effectiveness FEA results indicate that...