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Yihua Hu
University of Liverpool
166Publications
18H-index
1,057Citations
Publications 166
Newest
The 2-degree-of-freedom direct drive induction motor (2DoFDDIM) is capable of implementing rotary, linear or helical motion, which has the definite advantages of integrated structure, high material utilization and so on. In this paper, the characteristics analysis of the three kinds of motions are presented. The air-gap magnetic field distributions and mechanical characteristics of the 2DoFDDIM with three motions are derived respectively. The results show that there is super synchronous speed or...
#1Guipeng Chen (Ha Tai: Xiamen University)H-Index: 5
#2Liping Mo (Ha Tai: Xiamen University)
Last.Yihua Hu (University of Liverpool)H-Index: 18
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Equivalent power electronics converters (PECs), which have same performance characteristics but dissimilar configurations, are easily mistaken as different converters to be repeatedly studied in the practice, resulting in extra workload. Therefore, it is essential to implement the equivalence identification to avoid the undesired repeated research. In order to accomplish this goal, a computer-aided solution is proposed in this letter, aiming to quickly and precisely identify the equivalent PECs....
#1Guipeng Chen (Ha Tai: Xiamen University)H-Index: 5
#2Zhufeng Jin (ZJU: Zhejiang University)
Last.Xinlin Qing (Ha Tai: Xiamen University)H-Index: 3
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Thanks to the favorable advantage of low cost, integrated three-port dc–dc converters with reduced switches have attracted extensive attention. In order to provide more new topologies, this paper aims to propose a programmable topology derivation method, which effectively simplifies the cumbersome process of the conventional combination method. Instead of the manual connection and examination, the proposed alternative can quickly and rigorously derive multiple viable integrated three-port dc–dc ...
Last.Yihua HuH-Index: 18
view all 5 authors...
Aimed at addressing the problem that the subjective selection of start prediction time (SPT) in rolling bearing remaining useful life (RUL) prediction will lead to excessive noise in the prediction signal, a linear-regression-based SPT point determination was proposed. The sliding window linear regression method was used to establish sliding windows in the root mean square (RMS) range to obtain the RMS gradient domain. The threshold for the RMS gradient was set, and the continuous trigger thresh...
When an emergency happens to electric vehicles, the voltage of the DC-bus capacitor which is an important part of the permanent magnet synchronous machine (PMSM) drive system requires to be reduced as quickly as possible. Recently, a new idea of directly using the windings to discharge the capacitor has come forth. This paper proposes a physical energy flow model (EFM) to explain explicitly the winding-based discharge mechanism firstly. In the EFM, the performance characteristics of a classical ...
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