Abstract
The in-wheel switched reluctance motor (IWSRM) has significant potential for utilization in electric vehicle (EV) because of its inherent advantages such as low cost, robustness, wide speed range, and direct drive mode. However, the unbalanced radial force caused by eccentricity of IWSRM results in increasing vehicle vibration and decreasing riding comfort. In this paper, various vertical vibration control strategies for IWSRM are proposed and compared to improve the vibratory behavior of vehicle. First, effects of eccentricity ratio and eccentric angle on radial force, torque, and inductance are investigated by numerical analysis method for IWSRM. Then, IWSRM model, vehicle model, and suspension model are developed, based on which two common control algorithms (i.e. CCC and PWM) are provided and used as benchmarks to compare with the newly proposed two (i.e. CCC-F and PWM-F). They are designed by introducing the vehicle vertical acceleration as an extra control objective. Finally, the dynamic response of four control strategies are analyzed and the comparison results show that each of them performs differently under different driving conditions. As a result, a switchable controller based on the proposed control algorithms is presented to improve the overall performance of the IWSRM for EVs under various driving modes.
Highlights
Compared with traditional vehicles, electric vehicles (EVs) have great potentials to change the automotive industry thanks to the advantages such as less environment pollution, lower noise, and higher efficiency [1]–[3]
in-wheel switched reluctance motor (IWSRM) suffers from high torque ripple and unbalanced radial force caused by a great nonlinear step-by-step magnetic field [6]–[8]
In [20] and [21], H∞ control theory was applied to achieve active control for the suspension equipped with in-wheel motors (IWMs), and the results showed considerable improvement in performance was achieved
Summary
Electric vehicles (EVs) have great potentials to change the automotive industry thanks to the advantages such as less environment pollution, lower noise, and higher efficiency [1]–[3]. In [22], a semi-active vibration control strategy for IWSRM was proposed based on a dynamic vibration absorbing structure to effectively improve ride comfort and reduce the SRM vibration. In [23], for reducing the SRM vertical vibration, a linear quadratic gaussian controller was proposed for electromagnetic active suspension to suppress the unbalanced radial force. The stator of IWM was connected to either sprung mass or unsprung mass by using novel dynamic vibration absorbing structure in [24] and [25], the results showed the vehicle ride comfort and road handling were both improved. In [29], a combined vibration feedback control strategy was proposed by using current chopping control (CCC) method, which can effectively reduce radial force and ensure vehicle performance. This paper proposes an improved PWM control method for IWSRM in starting period to suppress the vehicle vertical vibration.
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
