Investigation on Zero-Sequence Signal Injection for Improved Harmonic Performance in Split-Phase Induction Motor Drives

Rakesh, P. R.; Narayanan, G.

doi:10.1109/tie.2016.2643620

Cited by 25 publications

(11 citation statements)

References 33 publications

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“…Rakesh, et.al. have recently implemented 24SSVPWM using carrier comparison method [11]. The authors establish the average per-phase voltage expressions for the inverter leg voltages to derive a common mode signal which can be generated from reference voltages.…”

Section: Carrier Based Implementations Of 24 Sector Svpwmsmentioning

confidence: 99%

Comparative assessment of voltage modulation methods for asymmetric six-phase machines

Kanchan

Haq

Peretti

2020

2020 22nd European Conference on Power Electronics and Applications (EPE'20 ECCE Europe)

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A comparative analysis of various techniques for pulse width modulation (PWM) of asymmetrical six-phase permanent magnet synchronous machine (PMSM) is presented in this paper. An asymmetric six-phase PMSM consists of two sets of three-phase winding groups spatially displaced by 30 0 . A current control architecture based on a vector space decomposition (VSD) approach has been utilized for control of PM machine, having individual current controller in each harmonic plane. The output voltage references from current controllers is then used for PWM generation. Various PWM methods from literature, which have been proposed for two-level converter-fed six-phase machines, are then reviewed and most promising 12 and 24 sector SVPWM methods are implemented in the above control architecture. Most common industrial adaptation of six-phase drives consists of two independent three-phase drive units configured to supply two three-phase winding sets. In such situation, it can happen that these drives can have their own independent three-phase modulators synchronized to its own clock. Problems can arise due to independent operation of these two sets of drives while controlling a six-phase machine due to lack of synchronization between these two modulators as well as non-synchronous sampling of machine currents. The main objective of this paper is to compare the performance of above PWM modulators with respect to different situations considering synchronization between reference signals to modulators as well as synchronization between sampling of phase current of two drives.

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Section: Carrier Based Implementations Of 24 Sector Svpwmsmentioning

confidence: 99%

Comparative assessment of voltage modulation methods for asymmetric six-phase machines

Kanchan

Haq

Peretti

2020

2020 22nd European Conference on Power Electronics and Applications (EPE'20 ECCE Europe)

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“…Because the vibration waveform is periodic, by Fourier transform, the vibration waveform can be converted into sinusoidal frequency components. 28–30 Harmonic of the vibration waveform is a frequency component with the frequency, which is an integer multiple of the vibration frequency (fundamental frequency). Thus, the vibration waveform can be expressed as where c 0 is the relative offset, m is the order of harmonics.…”

Section: Orifice Shape Designmentioning

confidence: 99%

Analytical solution to orifice design in a rotary valve controlled electro-hydraulic vibration exciter for high-frequency sinusoidal vibration waveform

Wang

Quan

et al. 2019

Proceedings of the Institution of Mechanical Engineers, Part E:

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The present study is focused on a novel method for the acquisition of high-frequency sinusoidal vibration waveform with electro-hydraulic vibration exciter. A rotary valve controlled electro-hydraulic vibration exciter is proposed to make it easier to obtain high vibration frequency than the conventional servo valve controlled counterpart. Three common used offices are taken into consideration: rectangular orifice, triangular orifice, and semicircular orifice. Analytical solution to orifice design of shape and axial length is suggested for the accurate control of vibration waveform. Harmonic theory borrowed from electronic technology is used as an evaluation index for the shape of vibration waveform. The orifice shape design decision is made according to the total harmonic distortion of vibration waveform. The nonlinear differential equation which models vibration waveform is established. The orifice axial length is designed according to the supply pressure, vibration frequency, and amplitude. Both theoretical and experimental results show that rectangular orifice is desirable for high-frequency sinusoidal vibration waveforms. With the orifice design solution, the proposed vibration exciter can output the vibration waveform with total harmonic distortion of less than 1% as compared with sinusoidal waveform and maximum error of 5% as compared with experimental value at vibration frequency of higher than 100 Hz, and greatly extend the frequency bandwidth when sinusoidal vibration waveform is required.

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“…r(k) is the residual signal with a micro-distortion signal. L and M are a gain matrix of the micro-distortion detection and the gain matrix of the residual signal, respectively [4].…”

Section: Distortion Correction Of Lidar Scanning Micromentioning

confidence: 99%

“…Lidar mapping technology quickly and accurately acquires three-dimensional information of objects, making it widely used in production and life [3]. However, due to factors, such as the outdoor light, the lidar scanning signal is slightly distorted, which affects the accuracy of the acquired information [4]. Detection for micro-distortion of lidar scanning signals improves the quality of the acquired lidar scanning signal, which is of great significance for ensuring the utilization efficiency of lidar scanning signals [5].…”

Section: Introductionmentioning

confidence: 99%

Micro-Distortion Detection of Lidar Scanning Signals Based on Geometric Analysis

et al. 2019

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When detecting micro-distortion of lidar scanning signals, current hardwires and algorithms have low compatibility, resulting in slow detection speed, high energy consumption, and poor performance against interference. A geometric statistics-based micro-distortion detection technology for lidar scanning signals was proposed. The proposed method built the overall framework of the technology, used TCD1209DG (made by TOSHIBA, Tokyo, Japan) to implement a linear array CCD (charge-coupled device) module for photoelectric conversion, signal charge storage, and transfer. Chip FPGA was used as the core component of the signal processing module for signal preprocessing of TCD1209DG output. Signal transmission units were designed with chip C8051, FT232, and RS-485 to perform lossless signal transmission between the host and any slave. The signal distortion feature matching algorithm based on geometric statistics was adopted. Micro-distortion detection of lidar scanning signals was achieved by extracting, counting, and matching the distorted signals. The correction of distorted signals was implemented with the proposed method. Experimental results showed that the proposed method had faster detection speed, lower detection energy consumption, and stronger anti-interference ability, which effectively improved micro-distortion correction.

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Investigation on Zero-Sequence Signal Injection for Improved Harmonic Performance in Split-Phase Induction Motor Drives

Cited by 25 publications

References 33 publications

Comparative assessment of voltage modulation methods for asymmetric six-phase machines

Comparative assessment of voltage modulation methods for asymmetric six-phase machines

Analytical solution to orifice design in a rotary valve controlled electro-hydraulic vibration exciter for high-frequency sinusoidal vibration waveform

Micro-Distortion Detection of Lidar Scanning Signals Based on Geometric Analysis

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