Abstract:Calibration is the backbone of any sensor and measurement philosophy. The conventional calibration techniques for electrical parameter measurement using nonlinear sensors are affected by the repeating analogue signals and lead to errors in measurement. This research paper investigates different regression-based mathematical models to calibrate the Hall sensor for measuring RMS and the fundamental frequency. The novelty of this research work lies in the feature-based input modelling to measure RMS current and f… Show more
“…For smoother VTOL operation, cogging situation is needed to be suppressed. To save the unnecessary time wasted in re-designing of model, the surrogate model of cogging torque is designed using Polynomial Regression to develop the desired DOP [36].…”
Section: G Dop Development Procedures -Polynomial Regression Based Su...mentioning
As an extensively used traction component of unmanned aerial vehicles (UAV), outer-rotor-permanent- magnet-synchronous-motor with inner-periphery-inset- magnet structure (OR-PMSM-IPIM) has eminent advantages with respect to its electromagnetic performance. In order to achieve light weight, high efficiency, efficient speed-torque and low turbulence in UAV, a novel method for optimizing design parameters of OR-PMSM-IPIM is proposed in this paper. A modified slime mold inspired optimization (SMO) algorithm is designed by introducing its collective behavior and swarm intelligence in the environment. In order to avoid collapsing for local optimal spots and enhance diversity in the population, the modified framework of SMO is proposed in this work by introducing complex group interaction patterns in the traditional SMO algorithm. In order to verify the effectiveness and convergence speed of proposed methodology, few comparative experiments are administered. The application of proposed method is tested by developing design-parameter-optimization (DPO) problem for OR-PMSM-IPIM. The analysis results show that the performance of optimized model of OR-PMSM-IPIM has been improved through proposed SMO design optimization.
“…For smoother VTOL operation, cogging situation is needed to be suppressed. To save the unnecessary time wasted in re-designing of model, the surrogate model of cogging torque is designed using Polynomial Regression to develop the desired DOP [36].…”
Section: G Dop Development Procedures -Polynomial Regression Based Su...mentioning
As an extensively used traction component of unmanned aerial vehicles (UAV), outer-rotor-permanent- magnet-synchronous-motor with inner-periphery-inset- magnet structure (OR-PMSM-IPIM) has eminent advantages with respect to its electromagnetic performance. In order to achieve light weight, high efficiency, efficient speed-torque and low turbulence in UAV, a novel method for optimizing design parameters of OR-PMSM-IPIM is proposed in this paper. A modified slime mold inspired optimization (SMO) algorithm is designed by introducing its collective behavior and swarm intelligence in the environment. In order to avoid collapsing for local optimal spots and enhance diversity in the population, the modified framework of SMO is proposed in this work by introducing complex group interaction patterns in the traditional SMO algorithm. In order to verify the effectiveness and convergence speed of proposed methodology, few comparative experiments are administered. The application of proposed method is tested by developing design-parameter-optimization (DPO) problem for OR-PMSM-IPIM. The analysis results show that the performance of optimized model of OR-PMSM-IPIM has been improved through proposed SMO design optimization.
“…Inductive current transformers (CTs) are used in power systems to adjust large currents to an appropriate level for measuring, protection and control equipment [6][7][8]. However, their use for the transformation of distorted currents requires additional tests over a wide frequency range, particularly concerning the specification of their accuracy for harmonics [5,[9][10][11][12][13][14][15][16]. This ensures proper power measurement and its quality monitoring in the condition of a distorted current and voltage.…”
This paper presents the evaluation of tested inductive CTs’ accuracy for distorted current harmonics in accordance with the optional accuracy class WB1 introduced by the new edition of the standard IEC 61869-1 published in the year 2023. The tests were performed in compliance with the interpretation sheet IEC 61869-2:2012/ISH1:2022. Therefore, the resistive and the resistive–inductive loads of the secondary winding of tested inductive CTs were used, as this was required for the given test conditions. The results indicate that the units designed for the transformation of a sinusoidal current of a frequency of 50 Hz ensure the high wideband transformation accuracy of the distorted current harmonics, as demanded by the power quality monitoring and distorted electrical power and energy requirements. The key to this is proper design using modern magnetic material(s) for the magnetic core and its oversizing in relation to the requirements for a given accuracy class defined for the transformation of sinusoidal currents with a rated frequency. Both tested inductive CTs with a rated primary current RMS value equal to 300 A, class 0.2 and 0.5, ensured compliance with the requirements of the WB1 wideband accuracy class.
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