Control of open-end induction motor by multi-objective GA based selective harmonic elimination PWM to reduce zero sequence currents and torque ripples

• Autorzy: Kumar K. Kalyan , Anuradha K. , Suryakalvathi M.
• Języki publikacji: EN

Abstrakty

EN

A double inverter powered induction motor with open stator winding has few benefits, including excessive error forbearance functionality, great flexibility and lesser rating of DC input voltage etc. For this Configuration, two types of Modules can be implemented: they are Non-Isolated DC link and Isolated DC link. In these two, Non-Isolated DC link is a good choice due to effective DC-link utilization and ruggedness, which is very beneficial in many applications. However, this module produces more zero sequence currents (Z-SC) by means of common mode (CMMD) voltage, which flows through DC bus. The circulation of Z-SC must be as little as possible since it merely rises the amplitude of currents in all phases. High ripple frequency of currents and torque, in addition results in extra loss, which not only reduces the efficiency, but influences loading ability and quickens the aging of drive. The Triplen harmonics can be defined as harmonics with integer of three times the frequency at fundamental, when they are in Phase in all Phases forms the Z-SC. In this paper, a novel SHE method is chosen to target Triplen harmonics in Single DC Source Module (Non- Isolated) and holding preferred fundamental quantity, which aids in improving the torque handling ability of the motor. In addition, the investigation of dual inverter fed OEW-IM with both common DC source as well as separate DC sources is also explored in the SHE for different number of switching angles and variable Modulation Index (MI) towards the torque ripples and Z-SC reduction given. The foremost challenge related to the SHE method is resolving a set of higher order nonlinear equations with a number of variables. A Multi-objective GA method is provided for that challenge which effects the reduction in Z-SC so that torque ripples will be minimized. Moreover, the novel SHE method reduces the number of harmonics better than the conventional SHE, which further decreases TH-D with decent fundamental quantity. For validation, the essential mathematical formulations and simulation results are presented.

Słowa kluczowe

EN

open-end winding induction machine; zero sequence currents; torque ripple; selective harmonic elimination; triplen harmonics

PL

maszyna indukcyjna; uzwojenie otwarte; tętnienie momentu obrotowego; selektywna eliminacja harmonicznych; potrójne harmoniczne

• Wydawca: Institute of Heat Engineering, Warsaw University of Technology
• Czasopismo: Journal of Power Technologies
• Rocznik: 2023
• Tom: Vol. 103, nr 1
• Strony: 72--87
• Opis fizyczny: Bibliogr. 35 poz., rys., tab., wykr.

Twórcy

autor

Kumar K. Kalyan

• JNTUK, Research Scholar, Hyderabad, India

autor

Anuradha K.

• VNRVJIET, Professor, Hyderabad, India

autor

Suryakalvathi M.

• JNTUH, Professor, Hyderabad, India

Bibliografia

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