Search

Your search keyword '"Bu, Feifei"' showing total 16 results
Start Over Author "Bu, Feifei" Search Limiters Peer Reviewed Journal ieee transactions on industrial electronics
16 results on '"Bu, Feifei"'

4. A New Data-Driven Diagnosis Method for Mixed Eccentricity in External Rotor Permanent Magnet Motors

Author

Zhou, Shengsen, Ma, Conggan, Wang, Yanyan, Wang, Dafang, He, Yu-Ling, Bu, Feifei, and Wang, Ming

Abstract

In this article, a new data-driven diagnosis method is proposed for mixed eccentricity (ME) in the external rotor permanent magnet motors (ERPMMs). Differently from the previous articles, the proposed method has the advantages of large sample size, high sample diversity, high efficiency, and strong generalization ability. First, the improved parametric analytical model (AM) of back electromotive force (EMF) of the ERPMMs is established. Then, the characteristics of the back EMF are analyzed. Accordingly, its amplitudes of fundamental waves and sideband harmonics are selected as the ME indexes. Afterwards, by using the proposed parametric AM, a database of ME signals is established efficiently, which contains tens of thousands of labeled samples. Furthermore, based on the back propagation neural network, a high-precision diagnosis model for ME in the ERPMM is established. Interference faults, such as unbalanced stator windings and uneven magnetization are also discussed. Finally, an experimental prototype for simulating the ME is manufactured and the effectiveness of the proposed method is verified. The maximum absolute diagnostic error is less than 4.0%. It provides a new idea for multiparameter diagnosis for ME.

Published
2023
Full Text
View/download PDF

15. Three-Phase Single-Stage AC?DC Converter Based on Magnetic-Combination Transformer With Power Factor Correction.

Author

Li, Chunjie, Huang, Wenxin, Bu, Feifei, Fan, Changxin, and Zhu, Pengcheng

Subjects
AC DC transformers, POWER factor measurement, ELECTROLYTIC capacitors, ELECTRIC potential measurement, VELOCITY modulation
Abstract

To improve the power factor and reliability for medium/high-power supply, a three-phase single-stage ac–dc converter based on magnetic-combination transformer with power factor correction (PFC) function is presented in this paper. According to the three-phase instantaneous power balance principle and the concept of the magnetic-flux superposition, a novel magnetic-combination transformer is proposed, which can make three-phase symmetrically and sinusoidally fluctuant power add to be constant. Therefore, the induced voltage of the secondary winding is constant. To realize sinusoidally fluctuant power in the input stage, dc-link filter capacitance can be reduced to a several-microfarad level. Single-stage PFC function, no electrolytic capacitor, and constant output voltage can be realized in the converter. The principle and the structure of the novel magnetic-combination transformer are analyzed in detail in this paper. Simulation and experimental results are presented to verify the feasibility of the proposed converter. [ABSTRACT FROM AUTHOR]

Published
2016
Full Text
View/download PDF

16. Parameter Design and Static Performance of Dual Stator-Winding Induction Generator Variable Frequency AC Generating System With Inductive and Capacitive Loads.

Author

Bu, Feifei, Hu, Yuwen, Huang, and Zhuang, Shenglun

Subjects
*CAPACITORS, *ELECTRIC filters, *INDUCTION generators, *EXCITATION systems of electric generators, *REACTIVE power, *ELECTRIC inductance
Abstract

In this paper, the design methods of the auxiliary excitation capacitors and the filter inductances are investigated for the dual stator-winding induction generator (DWIG) variable frequency ac (VFAC) generating system with inductive and capacitive loads, and the system static performance is presented as well. For this generating system, the proper selection of the auxiliary excitation capacitors and the filter inductances can minimize the reactive power capacity of the control winding, reduce the capacity of the static excitation converter (SEC) and improve the system static performance of the output voltage. The corresponding design principles and methods are proposed based on the change law of the control-winding reactive power and the requirements of the control-winding current. The experimental results show that the proposed design methods are correct and valid, and the DWIG VFAC generating system has a good static performance with the minimum-capacity control-winding reactive power and a compact-size SEC. [ABSTRACT FROM PUBLISHER]

Published
2014
Full Text
View/download PDF

Catalog

Books, media, physical & digital resources
See catalog results