Research Projects

Novel Radial-Flux Double-Sided Interior Permanent-Magnet Eddy-Current Coupler: Modeling, Design, and Prototyping

Sajjad Mohammadi , Gholamreza davarpanah , Mojtaba Mirsalim

(2013-2014)

• The main contribution of this project is to propose a novel double-sided interior PM (DSIPM) radial-flux eddy-current coupler. The DSIPM coupler introduces several advantages over surface-mounted PM structures. Also, due to the low momentum of inertia, a better dynamic performance is achieved. 3-D FEM is also employed in the analysis and evaluation. Finally, a prototype is built to confirm the validity of the design.


Novel 5-Phase Switched Reluctance Motor with Improved Torque Density: Design and Prototyping.

Gholamreza Davarpanah and Mojtaba Mirsalim

(2013-2014)

• M.S. thesis of Gholamreza Davarpanah


Novel Radial-Flux Interior PM Eddy-Current Coupler: Modeling, Design, and Prototyping

Sajjad Mohammadi , Ali Vakilian Zand , Mojtaba Mirsalim and Javad Shokrollahi Moghani

(2012-2013)

The main contribution of this project is to propose a novel interior PM (IPM) radial-flux eddy-current coupler, and the corresponding modeling by combining 3-D MEC approaches with Faraday’s and Ampere’s laws. Therefore, it is possible to easily model the device. In addition to flexibility and simplicity, the proposed approach is able to account for saturation and permeability of iron, and both characteristics of PMs i.e. remanence and coercivity. A number of design considerations are also presented. The IPM coupler introduces several advantages over surface-mounted PM structures. Superiorities of the proposed model over the existing approach is also demonstrated. 3-D FEM is also employed in the analysis and evaluation. Finally, a prototype is built to confirm the validity of the developed model.


Novel Axial-Flux Interior PM Eddy-Current Coupler: Modeling, Design, and Prototyping

Sajjad Mohammadi and Mojtaba Mirsalim

(2012-2013)

One of main contribution of this project is to develop a new analytical framework for a novel interior PM (IPM) axial-flux eddy-current couplers by combining 3-D MEC approaches with Faraday’s and Ampere’s laws. Therefore, it is possible to easily model the device. In addition to flexibility and simplicity, the proposed approach is able to account for saturation and permeability of iron, and both characteristics of PMs i.e. remanence and coercivity. A number of design considerations are also presented. The proposed IPM coupler introduces several advantages over surface-mounted PM structures. Superiorities of the proposed model over the existing approach is also demonstrated. 3-D FEM is also employed in the analysis and evaluation. Finally, a prototype is built to confirm the validity of the developed model.


Axial-Flux Surface-Mounted PM Eddy-Current Coupler: Modeling, Design, and Prototyping

Sajjad Mohammadi and Mojtaba Mirsalim

(2012-2013)

In this project, by combining Faraday’s and Ampere’s laws, and MEC techniques, a new analytical model for axial-flux eddy-current couplers has been offered. The proposed framework provides a good flexibility and simplicity, and is able to account for all geometrical parameters and material properties, e.g., saturation and permeability of the iron parts, remanence and coercivity of PMs, and actual current paths. Moreover, it can handle machines with complicated geometries. A number of design-related considerations are analytically derived as well. The 3-D FEM is also employed in the analyses and the evaluation of the model. Compared to the existing approaches, advantages of the proposed model in terms of accuracy and effectiveness are shown. Finally, the device is prototyped to validate the results obtained from the FEM and the proposed analytical model.