Sensorless control method of induction motors with new feedback gain matrix and speed adaptive law for low speed range
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Leilei Guo
,
Shuai Wang
,
Yanyan Li
Abstract
The conventional adaptive full-order observer-based speed sensorless control method for induction motor is prone to instability at low-speed region as improper feedback gain matrix and imprecise speed adaptive law are often used. To address these problems, a new feedback gain matrix design approach as well as a new speed adaptive law design technique are proposed in this paper. Firstly, considering that the d-axis current estimation error in the traditional feedback gain matrix design method has a great influence on the stability of the speed estimation algorithm, especially at low speeds, a new feedback gain matrix design method is proposed to minimize the d-axis current estimation error. Secondly, a new speed adaptive law design technique is studied based on the conventional method, which only requires the d-axis and q-axis current estimation error with a weight coefficient to be designed, simplifying the conventional speed adaptive law. Thirdly, the transfer function from the speed observation error to the proposed adaptive error is analyzed by Routh stability criterion theory, and the weight coefficient suitable for full range stable operation is determined by MATLAB software. Fourthly, the stability of the proposed method in this paper is analyzed using the poles distribution maps. Finally, the proposed method is experimentally verified based on a 2.2 kW induction motor experimental platform. The experimental results show that the proposed method can make the induction motor operate steadily at low-speed and zero-speed region with rated load. In addition, the proposed method has better anti-disturbance performance than the existing method.
Funding source: Scientific and Technological Project in Henan Province
Award Identifier / Grant number: 232102241026
Funding source: Outstanding Youth Science Foundation of Henan Province
Award Identifier / Grant number: 242300421074
Funding source: Henan Province Key R&D Project
Award Identifier / Grant number: 241111242300
Award Identifier / Grant number: 241111210400
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Research ethics: The local Institutional Review Board deemed the study exempt from review.
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Author contributions: The authors have accepted responsibility for the entire content of this manuscript and approved its submission.
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Competing interests: The authors state no conflict of interest.
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Research funding: This work was supported in part by the Scientific and Technological Project (https://kjt.henan.gov.cn/) in Henan Province (232102241026), in part by the Outstanding Youth Science Foundation (https://kjt.henan.gov.cn/) of Henan Province (242300421074), and in part by Henan Province Key R&D Project ([https://kjt.henan.gov.cn/], 241111210400, 241111242300).
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Data availability: The raw data can be obtained on request from the corresponding author.
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© 2024 Walter de Gruyter GmbH, Berlin/Boston
Articles in the same Issue
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- Sensorless control method of induction motors with new feedback gain matrix and speed adaptive law for low speed range
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- Experimental studies on insulating oils for power transformer applications
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- Power coordination and control of DC Microgrid with PV and hybrid energy storage system
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Articles in the same Issue
- Frontmatter
- Research Articles
- Improving islanded distribution system stability with adaptive decision-making framework
- Sensorless control method of induction motors with new feedback gain matrix and speed adaptive law for low speed range
- An improved CB-DPWM strategy with NP voltage balance and switching loss reduction for 3-L NPC converter
- Single-ended protection scheme for three-terminal hybrid DC transmission system based on refractive coefficients
- Long-distance transmission conductor condition sensing based on distributed fiber optic sensing technology
- Data integrity cyber-attack mitigation using linear quadratic regulator based load frequency control in hybrid power system
- Investigation of DG units influence on 66 kV sub-transmission system network considering region load growth: a case study
- Influence of increasing Integration of Solar photovoltaic on Small Signal and Transient stability of Nigeria Power System
- Implementation of SOC-based power management algorithm in a grid-connected microgrid with hybrid energy storage devices
- Experimental studies on insulating oils for power transformer applications
- Power distribution system restoration based on soft open points and islanding by distributed generations
- Power coordination and control of DC Microgrid with PV and hybrid energy storage system
- An investigation on NGR failure in Indian smart cities while replacing the existing overhead lines by underground cables
