An electric motor drive system for a propulsion device, the system comprising: a battery stack (20) having an earth terminal and an end terminal (21); an electric motor (10) electrically connected to be powered by the battery stack, the motor configured to, in use, be connected to drive the propulsion device; a power converter (40) electrically connected between the battery stack and the electric motor; and a switch (30) between the power converter and the battery stack, the switch arranged to switch between a first state electrically connecting the end terminal (21) of the battery stack to the power converter to provide a maximum battery voltage to the power converter, and a second state electrically connecting a tap point (22) from one or more intermediate nodes, intermediate the earth terminal and the end terminal, of the battery stack, to provide a voltage less than the maximum battery voltage to the power converter.
ELECTRIC POWER ARRANGEMENT FOR PROPULSION
ELEKTRISCHE LEISTUNGSANORDNUNG FÜR ANTRIEB
AGENCEMENT D'ALIMENTATION ÉLECTRIQUE POUR PROPULSION
2025-08-06
Patent
Electronic Resource
English
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