Design of a Low-Order FIR Filter for a High-Frequency Square-Wave Voltage Injection Method of the PMLSM Used in Maglev Train

Zhao, He; Zhang, Liwei; Liu, Jie; Zhang, Chao; Cai, Jingyi; Shen, Lu

doi:10.3390/electronics9050729

Cited by 7 publications

(3 citation statements)

References 27 publications

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“…The essence of the FIR filter is to weigh and sum the values of the past time. Compared to the IIR filter, there is no need to feedback on the output, so the structure is simple and easy to implement in programming [23].…”

Section: Harmonic Filtermentioning

confidence: 99%

Differential equation fault location algorithm with harmonic effects in power system

et al. 2023

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About 80% of faults in the power system distribution are earth faults. Studies to find effective methods to identify and locate faults in distribution networks are still relevant, in addition to the presence of harmonic signals that distort waves and create deviations in the power system that can cause many problems to the protection relay. This study focuses on a single line-to-ground (SLG) fault location algorithm in a power system distribution network based on fundamental frequency measured using the differential equation method. The developed algorithm considers the presence of harmonics components in the simulation network. In this study, several filters were tested to obtain the lowest fault location error to reduce the effect of harmonic components on the developed fault location algorithm. The network model is simulated using the alternate transients program (ATP)Draw simulation program. Several fault scenarios have been implemented during the simulation, such as fault resistance, fault distance, and fault inception angle. The final results show that the proposed algorithm can estimate the fault distance successfully with an acceptable fault location error. Based on the simulation results, the differential equation continuous wavelet technique (CWT) filter-based algorithm produced an accurate fault location result with a mean average error (MAE) of less than 5%.

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Section: Harmonic Filtermentioning

confidence: 99%

Differential equation fault location algorithm with harmonic effects in power system

et al. 2023

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“…The command filter(b,a,x) requires the numerator b and denominator a coefficients which represent a rational transfer function, whereas the data input is defined as x. Provided that a = 1 and b = 1/N, the result is a moving-average expression that filters the high frequency signals along the the number of elements N to be filtered (this is also known as the filter order) expressed in Equation ( 22) [45].…”

Section: Digital Filter Designmentioning

confidence: 99%

An Efficient and Robust Current Control for Polymer Electrolyte Membrane Fuel Cell Power System

et al. 2021

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Taking into account the restricted ability of polymer electrolyte membrane fuel cell (PEMFC) to generate energy, it is compulsory to present techniques, in which an efficient operating power can be achieved. In many applications, the PEMFC is usually coupled with a high step-up DC-DC power converter which not only provides efficient power conversion, but also offers highly regulated output voltage. Due to the no-linearity of the PEMFC power systems, the application of conventional linear controllers such as proportional-integral (PI) did not succeed to drive the system to operate precisely in an adequate power point. Therefore, this paper proposes a robust non-linear integral fast terminal sliding mode control (IFTSMC) aiming to improve the power quality generated by the PEMFC; besides, a digital filter is designed and implemented to smooth the signals from the chattering effect of the IFTSMC. The stability proof of the IFTSMC is demonstrated via Lyapunov analysis. The proposed control scheme is designed for an experimental closed-loop system which consisted of a Heliocentric hy-Expert™ FC-50W, MicroLabBox dSPACE DS1202, step-up DC-DC power converter and programmable DC power supplies. Comparative results with the PI controller indicate that a reduction of 96% in the response time could be achieved using the suggested algorithm; where, up to more than 91% of the chattering phenomenon could be eliminated via the application of the digital filter.

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“…This includes a radial basis function neural network (RBFNN) for self-tuning of the proportional-integral-derivative (PID) controller. In [16], a low-order finite impulse response (FIR) filter, for a high-frequency signal injection method in the permanent magnet linear synchronous motor (PMLSM), was designed for position observation. The filter coefficients were obtained using constraint equations based on the amplitude-frequency characteristics of the FIR filter.…”

Section: The Special Issuementioning

confidence: 99%

Advanced Control for Electric Drives: Current Challenges and Future Perspectives

Merabet

2020

Electronics

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In the Special Issue “Advanced Control for Electric Drives”, the objective is to address a variety of issues related to advances in control techniques for electric drives, implementation challenges, and applications in emerging fields such as electric vehicles, unmanned aerial vehicles, maglev trains and motion applications. This issue includes 15 selected and peer-reviewed articles discussing a wide range of topics, where intelligent control, estimation and observation schemes were applied to electric drives for various applications. Different drives were studied such as induction motors, permanent magnet synchronous motors and brushless direct current motors.

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Design of a Low-Order FIR Filter for a High-Frequency Square-Wave Voltage Injection Method of the PMLSM Used in Maglev Train

Cited by 7 publications

References 27 publications

Differential equation fault location algorithm with harmonic effects in power system

Differential equation fault location algorithm with harmonic effects in power system

An Efficient and Robust Current Control for Polymer Electrolyte Membrane Fuel Cell Power System

Advanced Control for Electric Drives: Current Challenges and Future Perspectives

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