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Closed-Loop Voltage Control for Maximizing Inverter Output Voltage in the Field Weakening Region of Induction Machines

Lookup NU author(s): Hamidreza Gashtil, Professor Volker Pickert, Dr Dave Atkinson, Dr Mohamed Dahidah, Professor Damian Giaouris



This is the authors' accepted manuscript of an article that has been published in its final definitive form by IEEE, 2022.

For re-use rights please refer to the publisher's terms and conditions.


It is desirable in induction motors drives to maximize the inverter output voltage to increase the output torque and power in the field weakening (FW) region. Existing FW control methods produce high torque ripples and show high step reductions of the d-axis current during the transient period from constant torque to FW. In addition, many proposed controllers are difficult to tune and require specific control algorithms to deal with parameter sensitivities. In this paper, a closed-loop voltage control method is developed based on the d-axis reference current to maximize the voltage extraction from dc-link voltage while minimizing the above disadvantages. This is achieved by applying the proposed d-axis current which compensates the difference between the hexagonal reference voltage and stator voltage for corresponding stator voltage vector position. Therefore, the output torque and power of the induction machine is maximized in the field weakening region. The proposed method is first presented analytically and then simulation and experimental results are included to verify the control method.

Publication metadata

Author(s): Gashtil H, Pickert V, Atkinson DJ, Dahidah MSA, Giaouris D

Publication type: Article

Publication status: Published

Journal: IEEE Journal of Emerging and Selected Topics in Industrial Electronics

Year: 2022

Issue: ePub ahead of Print

Online publication date: 18/07/2022

Acceptance date: 06/07/2022

Date deposited: 06/07/2022

ISSN (print): 2687-9735

ISSN (electronic): 2687-9743

Publisher: IEEE


DOI: 10.1109/JESTPE.2022.3192120

ePrints DOI: 10.57711/kwtx-e793


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