Modelling of electromagnetic excitation forces of small induction motor for vibration and noise analysis

BLDC motor and drive conducted RFI simulation for automotive applications

“…Similarly, the real-time simulations of induction motors have been performed. Some authors such as Strahan [11], Zhang et al [12], Jack et al [13], [14], and Cho [15] have studied motor performance via numerical solutions of these, or similar, differential equations. Typically, models based on the solution of such equations can be used to evaluate general electromechanical behavior but RFI concerns cannot be taken into account.…”

“…Fundamentally, this was an exercise of modeling the various electromechanical torques as circuit elements. Considering the first term of the right-hand side of (3) dealing with the torque contribution from the moment of inertia of the motor and fan, we write (15) to (16) where is the angular velocity of the motor rotor (rad s ). This expression is analogous to the relationship governing the current through a capacitor .…”

Analytical model to calculate radial forces in permanent-magnet synchronous machines

“…In PMSMs the stator field is created by coils and the rotor field is produced by permanent magnets which are located in the rotor, hence the name. From the analysis of these fields plenty of characteristic of the machine, electromagnetic torque, electromagnetic forces (EMF), et cetera [6][7][8][9] can be obtained. ________________________________ I. Gómez, G. Almandoz, J. Poza, and G. Ugalde are with the University of Mondragón, 20500 Arrasate -Mondragón.…”

Noise source identification of a BLDC motor

“…For identification of mechanical noise sources, misalignment, unbalance, fan shape, resonance, and vibration modes have been extensively considered to describe noise behavior [1][2][3][4][5][6]. Reduction of noise by considering electromagnetic sources has been also actively studied in many research works [7][8][9][10][11][12].…”