ABSTRACT
Interior Permanent Magnet (IPM) motor is widely used for many industrial applications
and has relatively high torque ripple generated by reluctance torque. Since the
configuration of the stator has great influence on reluctance torque, different stator
configuration is necessary to improve the torque performance of IPM motor. Natural
variable modeling and performance comparison of Interior Permanent Magnet Motor
with Concentrated winding (CW), Short pitched and Full pitched distributed winding
(DW) is presented in this project report. Three phase Interior Permanent Magnet Motor
with identical rotor dimensions, air gap length, series turn number, stator outer radius,
and axial length was studied with different stator winding configuration. Basic
parameters and machine performance, such as inductances, copper losses, power density,
efficiency at high and low speed, torque ripple, rotor speed with load torque, phase
currents, electromagnetic torque, controllability and demagnetization tolerance are
compared. As a means of supplementing analysis of the IPM motor, winding function
theory (WFT) is used to analyze the motor. Winding function theory has enjoyed success
with induction, synchronous, and even switched reluctance machines in the past. It is
shown that this method is capable of analyzing IPM motor with different stator
configuration and the simulations were carried out by using Embedded MATLAB
function. It was observed that, the concentrated winding IPM motor has a lower copper
loss of 0.3 kw and 3.7 kw at low and high speed respectively and 133 Nm high peak
torque developed, pull out power of 58 kw, torque ripple of 96 Nm, average torque of
142 Nm, demagnetization tolerance of 60%, amplitude of the fundamental winding is
26.45 and efficiency of 89. the short pitched distributed winding IPM motor has a lower
copper loss of 0.35 kw and 3.6 kw at low and high speed respectively and 116 Nm high
peak torque developed, pull out power of 57 kw, torque ripple of 71 Nm, average torque
of 185 Nm, demagnetization tolerance of 78%, amplitude of the fundamental winding is
27.53 and efficiency of 87. As for full pitched distributed winding IPM motor has a lower
copper loss of 0.35 kw and 3.6 kw at low and high speed respectively and 116 Nm high
peak torque developed, pull out power of 56 kw, torque ripple of 71 Nm, average torque
of 185 Nm, demagnetization tolerance of 78%, amplitude of the fundamental winding is
29.3 and efficiency of 88.
Nasiru, A (2021). Natural Variable Modeling and Performance of Interior Permanent Magnet Motor with Concentrated and Distributed Windings. Afribary. Retrieved from https://track.afribary.com/works/natural-variable-modeling-and-performance-of-interior-permanent-magnet-motor-with-concentrated-and-distributed-windings
Nasiru, Aliyu "Natural Variable Modeling and Performance of Interior Permanent Magnet Motor with Concentrated and Distributed Windings" Afribary. Afribary, 15 May. 2021, https://track.afribary.com/works/natural-variable-modeling-and-performance-of-interior-permanent-magnet-motor-with-concentrated-and-distributed-windings. Accessed 09 Sep. 2024.
Nasiru, Aliyu . "Natural Variable Modeling and Performance of Interior Permanent Magnet Motor with Concentrated and Distributed Windings". Afribary, Afribary, 15 May. 2021. Web. 09 Sep. 2024. < https://track.afribary.com/works/natural-variable-modeling-and-performance-of-interior-permanent-magnet-motor-with-concentrated-and-distributed-windings >.
Nasiru, Aliyu . "Natural Variable Modeling and Performance of Interior Permanent Magnet Motor with Concentrated and Distributed Windings" Afribary (2021). Accessed September 09, 2024. https://track.afribary.com/works/natural-variable-modeling-and-performance-of-interior-permanent-magnet-motor-with-concentrated-and-distributed-windings