Searched for: author%3A%22Cao%2C+Zhi%22
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van Ewijk, Stijn (author), Ashton, Weslynne S. (author), Berrill, Peter (author), Cao, Zhi (author), Chertow, Marian (author), Chopra, Shauhrat S. (author), Fishman, Tomer (author), Fitzpatrick, Colin (author), Sprecher, B. (author)
This white paper presents 10 insights into the circular economy from the field of industrial ecology. Industrial ecology is a scientific field that takes a systems perspective to explore the society-wide use of materials and energy and address the related impacts on the natural environment. The circular economy is a framework for sustainable...
report 2023
document
Cao, Zhi (author), Huang, Yunkai (author), Peng, Fei (author), Dong, J. (author)
Position sensing is one of the crucial parts of the active magnetic bearing (AMB) system. The printed circuit board (PCB) eddy current position sensor is a new type of position sensor for the AMB system, which makes a compact structure, high sensing quality, and is low cost. In this article, an improved driver circuit is proposed for this new...
journal article 2022
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Cao, Zhi (author), Huang, Yunkai (author), Guo, Baocheng (author), Peng, Fei (author), Dong, J. (author), Hemeida, Ahmed (author)
To facilitate the active magnetic bearing (AMB) design and analysis, an accurate and fast model that considers both rotor eccentricity and the saturation effect is necessary. In this article, a novel hybrid analytical model (HAM) for effective calculation of the magnetic field of the AMB is proposed. Eccentricity and local saturation are...
journal article 2022
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Peng, Fei (author), Cao, Zhi (author), Dong, J. (author), Huang, Yunkai (author)
This article proposes a rotor position and speed estimation method for the interior permanent magnet synchronous machine (IPMSM) in the full-speed range. The proposed method is implemented in the synchronous rotating frame. Based on the voltage equation of the IPMSM in the synchronous rotating frame, a single-variable optimization problem is...
journal article 2021
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Cao, Zhi (author), Huang, Yunkai (author), Guo, Baocheng (author), Dong, J. (author), Peng, Fei (author)
This paper applies two different analytical methods, i.e., the perturbation method and superposition method, to calculate the magnetic flux density distribution and the magnetic force of the active magnetic bearing (AMB) with the rotor eccentricity. These two methods are thoroughly analyzed, compared and validated by the finite element model ...
journal article 2020
Searched for: author%3A%22Cao%2C+Zhi%22
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