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Implementation of Sensorless AC Drive Controllers

Ajita K. Bhosale, Sarika K. Bhosale

Abstract


The primary objective of this paper is to showcase the utilization of FPGA (Field Programmable Gate Array) technology in the implementation of sensorless AC drive controllers tailored for embedded electrical systems. To address the challenges posed by very low speeds and standstill conditions, the experimental validation of a vector control scheme employing the injection of a rotating high-frequency voltage is conducted, with a particular focus on its efficacy in conjunction with BSSG. Moving beyond these scenarios, specifically for low and high-speed operation, an innovative Extended Kalman Filter (EKF) algorithm is employed. The proposed FPGA-based implementation not only demonstrates the practical viability of sensorless AC drive controllers but also highlights the adaptability and efficiency of the chosen control strategies across a broad range of operating conditions. This research contributes to the advancement of embedded electrical systems by offering a comprehensive and experimentally validated approach to sensorless AC drive control, particularly leveraging the capabilities of FPGA technology.


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References


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