JRM Vol.32 No.5 pp. 984-993
doi: 10.20965/jrm.2020.p0984


Development of Hydraulic Pump Drive System Using Switched Reluctance Motor with Servo Function

Ha Tham Phan*, Seiya Itagaki*, and Yasukazu Sato**

*Department of Mechanical Engineering, Graduate School of Engineering, Yokohama National University
79-5 Tokiwadai, Hodogaya-ku, Yokohama, Kanagawa 240-8501, Japan
Yokohama National University
79-5 Tokiwadai, Hodogaya-ku, Yokohama, Kanagawa 240-8501, Japan

March 31, 2020
July 30, 2020
October 20, 2020
hydraulic pump, actuator, switched reluctance motor, servomotor, closed hydraulic circuit

A switched reluctance motor (SRM) generates a reluctance torque without the power of a permanent magnet, rendering it a candidate for rare-earth free motors. Compared with a permanent magnet synchronous motor (PMSM), SRMs also offer operational advantage in high-temperature environments owing to their robust structure. However, SRMs are generally inferior to PMSMs in terms of torque ripple, noise, and speed control, in particular. Therefore, this study attempts to improve the controllability of SRMs by proposing an SRM driving method in the form of a bidirectional rotation torque and a speed-controllable servomotor. The advantage of this method is evaluated experimentally using a closed-loop hydraulic system (valveless control system), which includes a hydraulic pump driven by an SRM to supply hydraulic power to actuators. The results show that the pump flow rate and hydraulic motor speed are consistent with the sinusoidal commands corresponding to the forward and reverse rotations of the SRM.

Bidirectional rotational speed control system of SRM with hydraulic pump/motor

Bidirectional rotational speed control system of SRM with hydraulic pump/motor

Cite this article as:
H. Phan, S. Itagaki, and Y. Sato, “Development of Hydraulic Pump Drive System Using Switched Reluctance Motor with Servo Function,” J. Robot. Mechatron., Vol.32 No.5, pp. 984-993, 2020.
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Last updated on May. 10, 2024