Tubular linear permanent magnet synchronous machine applied to semi-active suspension systems

Abstract

Purpose Semi-active suspension systems with electromagnetic dampers allow energy regeneration and the required control strategies are easier to implement than the active suspensions are. This paper aims to address the application of a tubular linear permanent magnet synchronous machine for a semi-active suspension system. Design/methodology/approach Classical rules of mechanics and electromagnetics were applied to describe a dynamic model combining vibration and electrical machines theories. A multifaceted MATLAB®/Simulink model was implemented to incorporate equations and simulate global performance. Experimental tests on an actual prototype were carried out to investigate displacement transmissibility of the passive case. In addition, simulation results were shown for the dissipative semi-active case. Findings The application of the developed model suggests convergent results. For the passive case, numerical and experimental outcomes validate the parameters and confirm system function and proposed methodology. MATLAB®/Simulink results for the semi-active case are consistent, showing an improvement on the displacement transmissibility. These agree with the initial conceptual thoughts. Originality/value The use of linear electromagnetic devices in suspension systems is not a novel idea. However, most published papers on this subject outline active solutions, neglect semi-active ones and focus on experimental studies. However, here a dynamic mechanical-electromagnetic coupled model for a semi-active suspension system is reported. This is in conjunction with a linear electromagnetic damper.

A Review of Electromagnetic Energy Regenerative Suspension System & Key Technologies

“…To further improve the magnetic flux density inside the linear motor to improve the overall performance of the electromagnetic energy regenerative suspension system. Eckert et al [52,53] designed a two-layer Halbach array of tubular linear motors integrated with the suspension system, as shown in Fig. 11a.…”

Development of Empirical Model for Electromagnetic Damping Coefficient Damper

“…Faraday's induction principle states that when a magnetic bar is inserted into a cylindrical coil (solenoid), it induces the generation of electromagnetic flux within the coil. As a result, the solenoid becomes operational and exhibits its intended functionality [8], [17], [18]. The voltage produced in a single turn of wire wrapped around a magnetic core is equal to the rate of change of the magnetic flux enclosing that wire.…”

Validação do Modelo Dinâmico de um Atuador Eletromagnético Linear Tubular Utilizando Cossimulação com Método dos Elementos Finitos

“…As topologias mais comuns de atuadores são a de indução, de relutância, síncrono de ímãs permanentes com ou sem ranhuras e síncrono com arranjo de quase-Halbach (Boldea, 2013;Eckert et al, 2018). Estudos recentes têm se focado nesta última categoria, mais especificamente em atuadores síncronos de ímãs permanentes com duplo arranjo de quase-Halbach e bobina longa trifásica (Eckert et al, 2016;Zanatta et al, 2018). Esta topologia possui algumas vantagens quando comparada às outras, como alta densidade de força, pequenas perdas magnéticas, pequena massa móvel e força de relutância praticamente nula (Eckert et al, 2018).…”