The Engineering and Scientific Center "TEMP" has received a patent for an arc-stator asynchronous motor. The development is intended for use in electrical engineering and aims to increase the reliability of the device's operation.
The motor consists of two main parts: a stationary annular inductor and two rotating rotors. The inductor is assembled from individual segments, and its winding is divided into two halves for ease of assembly. The design is reinforced with stiffening ribs and insulated ties. The rotors are also assembled from segments that have slots and special teeth. The length of the teeth is slightly less than the length of the slots – this is done so that the parts can expand when heated without jamming each other.
As explained in the patent description, the design simplifies coil replacement and improves access to the moving parts of the mechanism, which enhances maintainability.
Thanks to its ability to develop high torque, the new motor is suitable for driving hydraulic systems in construction and special machinery, as well as for high-torque drives in mills, winches, and similar equipment. The special stator design allows for the creation of efficient traction drives for locomotives, which can increase the tractive effort of rolling stock. The motor can also operate in both motor and generator modes, which expands the range of its possible applications.
Other TEMP developments and related electric motor developments
The Engineering and Scientific Center "TEMP" has previously caught our attention: in February 2026, we reported on a patent by the center's specialists for a linear asynchronous motor with a lightweight secondary element. There, engineers also solved the problem of reducing the structure's mass without losing traction characteristics – in particular, they replaced solid ferromagnetic plates with a lattice system of beams and rods, and provided special spacers to compensate for thermal expansion.
In parallel, other Russian developers are actively patenting electric machines with dual functionality. In March 2026, we wrote about the electric motor-generator from "Innovatsionnye Motory" – a device combining motor and generator modes in one housing. The new arc-stator motor from "TEMP" also supports both operating modes, which fits into the general trend towards creating universal electric machines.