Torque ripple is a periodic disturbance in torque, and so it is not a static value. Torque is often seen as an average value, such as that which is shown by the black line in the top graph. However, torque has a frequency component and an amplitude component. It is an AC imposed ove...
The experimental results show that this method significantly reduces the damaging impact of the reluctance torque ripple without complicating computations or changing the stator and rotor structures of the motor. Additionally, the switching frequency and consequently switching losses are reduced using the ...
In this paper, a comparison of classical DTC technique, conventional fuzzy logic based DTC and the 12 sector methodology fuzzy logic DTC is carried out based on the output torque ripple frequency. Simulated results using MATLAB/ Simulink show improved performance of fuzzy logic methodologies over ...
Google Share on Facebook torque ripple [′tȯrk ‚rip·əl] (design engineering) cog McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc. Want to thank TFD for its existence?Tell a friend about us, add a link to this ...
In this webinar, uncover the critical importance of torque ripple in motor drive systems. Discover its effects and how employing high-fidelity motor models, powered by JMAG’s finite element analysis (FEA) data, can elevate your understanding. Learn about the method for integrating FEA data into...
stall torque (cooled) Ripple torque (cogging, reluctance torque) Tu Tp Tcw1 Tcw2 T3 Tsw Tr Nm Nm Nm Nm Nm Nm Nm 1195 854 632 474 237 449 2.6 Power loss (copper) at Tp (130 °C) Power loss (copper) at Tcw1 (120 °C) Plp W 5477 Plw W 1934 Motor constant (25 °C) ...
A periodic disturbance observer determines real part I^An and imaginary part I^Bn of an estimated current including a periodic disturbance, from value of identification identifying a system transfer function of an nth order torque ripple frequency component from a command torque to a detected torque...
IGBT switching frequency is determined by the hysteresis band. Reference current is taken for hysteresis control of 3-phase current. The position sensor determines turning off and on phases of motor windings. Noise is added with actual motor speed by using the sum block and given as an input ...
Disclosed is an electric motor system with reduced torque ripple comprising a sinusoidally magnetized permanent magnet, a sinusoidal inverter, a higher resolution position sensor, a composite iron sta
2. A control system for suppressing torque ripple of a synchronous motor, comprising: (a) the synchronous motor having multi-phase armature windings and a field winding; (b) a frequency converter for supplying AC current of variable frequencies to said armature windings; (c) a position det...