Canadian Manufacturing

Frost & Sullivan applauds ePropelled for electric motors

ePropelled's eDTS system includes an electric motor that makes it possible to reduce battery size and lower the cost of electric vehicle manufacture while keeping the same driving range, according to a company statement.

December 17, 2021   by CM Staff

ePropelled

SAN ANTONIO — Frost & Sullivan recognized ePropelled with the 2021 North American Automotive Electric Motor Product Leadership Award. The company’s eDTS system includes an electric motor that makes it possible to reduce battery size and lower the cost of electric vehicle manufacture while keeping the same driving range, according to a statement from ePropelled.

The company’s Dynamic Torque Switching system includes motor windings and a switch matrix. The switch matrix connects the sections of the windings in a series, series parallel combinations, or all in parallel. ePropelled stated that the windings are still manufactured in the same manner as standard electric motor windings for consistency.

ePropelled also stated that the switch matrix, a semiconductor switch, is designed to exclude moving parts and does not involve complex manufacturing processes. This is the only physical part not present in standard motors. The inverter drive software selects the winding combination to use from the available switch maps based on the demand for the vehicle torque or power.

ePropelled also stated that their eDTS system can increase the range of a vehicle by at least 15 per cent due to increased motor efficiency. The company stated that their system can also reduce battery size, resulting in  a vehicle weight reduction of 5 per cent. Additionally, the company noted that high-efficiency motors enable reduction in active materials used (copper, magnets, and electrical steel).

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The software in the inverter drive decides the winding combinations to use from the available switch maps, resulting in unmatched efficiency increases. Each map retains high efficiency and compares to the output performance of a particular gear when using a gearbox. Software control enables the eDTS to have multiple zones or gears within the torque and speed limits.