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Ultra-Low Inductance PMSM Drive Using a DC Current Sensor

Title
Ultra-Low Inductance PMSM Drive Using a DC Current Sensor
Authors
ChoiHyeon-GyuHaJung-IkLeeKahyun
Ewha Authors
이가현
SCOPUS Author ID
이가현scopus
Issue Date
2024
Journal Title
IEEE Transactions on Industrial Electronics
ISSN
0278-0046JCR Link
Citation
IEEE Transactions on Industrial Electronics vol. 71, no. 6, pp. 5597 - 5607
Keywords
AC motor drivescurrent measurementsignal reconstructionsingle-shuntultralow inductance motor
Publisher
Institute of Electrical and Electronics Engineers Inc.
Indexed
SCIE; SCOPUS WOS scopus
Document Type
Article
Abstract
This article presents a single shunt current sensing drive method for ultralow inductance permanent magnet synchronous motors that can reliably reconstruct phase currents even at very low speeds. Single current shunt inverters using dc current measurement entail the problem of having dead zones where the phase currents cannot be reconstructed. Voltage injection at the switching frequency can be a solution to avoid this, but at the expense of the newly introduced current ripple. That current ripple is exacerbated in ultralow inductance motors and can cause drive failure, especially at low speeds. To rule out voltage injection, this article presents a drive scheme that combines sequential two-phase excitation with a dc current averaging method using an RC low-pass filter. This permits three-phase current reconstruction from the average of dc current measurements per half-switching period, regardless of the active vector duration. Experimental demonstrations in this article show that the proposed driving method allows reliable current reconstruction at both startup and low speed without a significant current ripple. The current reconstruction and dynamic control performance are demonstrated with both steady-state and transient experiments. © 1982-2012 IEEE.
DOI
10.1109/TIE.2023.3288203
Appears in Collections:
공과대학 > 전자전기공학전공 > Journal papers
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