US 12,255,511 B2
Multi-operating-voltage motor
Roland-Alois Hoegerle, Tuttlingen (DE); and Juergen Barth, Denkingen (DE)
Assigned to Aesculap AG, Tuttlingen (DE)
Appl. No. 17/795,589
Filed by Aesculap AG, Tuttlingen (DE)
PCT Filed Jan. 22, 2021, PCT No. PCT/EP2021/051487
§ 371(c)(1), (2) Date Jul. 27, 2022,
PCT Pub. No. WO2021/151798, PCT Pub. Date Aug. 5, 2021.
Claims priority of application No. 10 2020 101 990.4 (DE), filed on Jan. 28, 2020.
Prior Publication US 2023/0080962 A1, Mar. 16, 2023
Int. Cl. H02K 3/28 (2006.01); H02P 25/18 (2006.01)
CPC H02K 3/28 (2013.01) [H02P 25/18 (2013.01); H02K 2213/09 (2013.01)] 11 Claims
OG exemplary drawing
 
1. An electric motor with a motor winding interconnection for operating an electrosurgical instrument with exactly one motor platform, which is provided and configured to operate the motor at a first operating voltage and at a second operating voltage different from the first operating voltage, and a circuit is provided on the motor platform, which is formed in each case by three phases with in each case one phase coil each, and at least one phase coil is formed from N>1 interconnected individual coils, wherein, in the first operating voltage, the N individual coils of each phase coil are connected in parallel and in the second operating voltage, the N individual coils of each phase coil are connected in series, and the switching between the first and second operating voltages via at least one short-circuiting means per phase coil is provided, wherein the at least one short-circuiting means is configured as a passive component that short-circuits the respective interconnected individual coils to connect the individual coils in parallel for the first operating voltage or in series for the second operating voltage, and wherein the motor platform is provided and designed in such a way that the motor characteristic and the characteristic values of the motor are identical during operation in the first and second operating voltages.