Yang, H., Lyu, S., Lin, H. et al. (5 more authors) (2019) Stepwise magnetization control strategy for DC-magnetized memory machine. IEEE Transactions on Industrial Electronics, 66 (6). pp. 4273-4285. ISSN 0278-0046
Abstract
Memory machine (MM) equipped with hybrid permanent magnets (PMs), i.e., NdFeB and low coercive force (LCF) PMs, exhibits acceptable torque capability at low speeds and high efficiency at high speeds. Previous literatures have addressed that the constant power speed range (CPSR) of MMs can be further extended by online PM flux control, and the requirement of flux-weakening (FW) inverter current can be reduced as well. Nevertheless, how to coordinate the d-axis vector FW and PM magnetization control over a whole operating range in a reasonable manner remains unreported. Therefore, this paper proposes and implements a stepwise magnetization control strategy on a DC-magnetized memory machine based on the operating characteristics under various PM magnetization states and speed ranges. The configuration, principle and mathematical model of the investigated machine are introduced first. Then, the proposed control strategy is established by dividing the operating envelop into several FW regions, and an appropriate FW control scheme is utilized at each stage. It demonstrates that the CPSR can be effectively extended by simply applying the demagnetizing current pulses in several steps. This simplifies the control efforts considerably without resorting to continuous PM flux control and frequent actions of the switching devices. The effectiveness of the proposed control strategy is verified by experimental results.
Metadata
Item Type: | Article |
---|---|
Authors/Creators: |
|
Copyright, Publisher and Additional Information: | © 2018 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other users, including reprinting/ republishing this material for advertising or promotional purposes, creating new collective works for resale or redistribution to servers or lists, or reuse of any copyrighted components of this work in other works. Reproduced in accordance with the publisher's self-archiving policy. |
Keywords: | Control strategy; DC-magnetized; flux weakening; memory machine; stepwise magnetization; variable flux |
Dates: |
|
Institution: | The University of Sheffield |
Academic Units: | The University of Sheffield > Faculty of Engineering (Sheffield) > Department of Electronic and Electrical Engineering (Sheffield) |
Depositing User: | Symplectic Sheffield |
Date Deposited: | 29 Nov 2018 14:25 |
Last Modified: | 02 Nov 2021 14:27 |
Status: | Published |
Publisher: | Institute of Electrical and Electronics Engineers |
Refereed: | Yes |
Identification Number: | 10.1109/TIE.2018.2860544 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:139335 |