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Objective
Advances in motor technology are key elements in progressing electric-powered vehicle development. The more compact the motor, the greater the freedom in terms of vehicle layout and packaging while higher outputs increase performance and driving pleasure. The 3D Motor was developed to meet these requirements.
Features
- With the energy consumption of a conventional lightweight vehicle, it generates torque equivalent to that of a V8 4.5L engine (528Nm) and power equivalent to a 2.5L engine (at Ф280).
- The slim design allows it to be placed between the engine and transmission in a hybrid (HEV) design, or within the wheels of a pure EV.
System Overview
Structuring of 3D magnetic path
The compact dimensions and high output of the motor was made possible by its disc shape. 3D magnetic field analysis helped develop a structure which enables magnetic flux to flow efficiently. Despite its size, the area available for the magnetic flux is larger, which results in higher power output.
Optimised layout of electromagnetic coil and permanent magnets
Performance in an electric motor is determined by how the magnetic flux passes through the electromagnetic coil. By optimising the layout of the electromagnetic coil and permanent magnet in the 3D Motor, it has been possible to use multi-phase current to deliver highly efficient control of the coil and effective use of the magnetic flux.
