Abstract: An electric motor has a stator and a rotor for rotation relative to the stator. The stator has a plurality of stator windings distributed along the circumference of the stator. Each stator winding is connected to a respective end terminal. Driver circuitry is coupled to the plurality of stator windings for creating a rotating magnetic field for driving the rotor. The driver circuitry has one driver module per stator winding. Each driver module is mounted close to its respective stator winding. Each driver module is connected to the respective end terminal of its respective stator winding without a parasitic impedance of any significance being present in between said driver module and said stator winding.
Type:
Grant
Filed:
July 12, 2018
Date of Patent:
June 27, 2023
Assignee:
Flekkefjord Elektro AS
Inventors:
Alf Magne Midtbø Versland, Eirik Fønstelien, Karoline Ulvan, Anders Fuglesteg Nilsen, Bjørn Harald Snersrud, Geir Pettersen
Abstract: An electric winch has a winch drum and a winch base. The winch drum has a drive train with an electric motor. The winch base has mounting portions being configured for rotatably holding and supporting the winch drum and the drive train. The electric winch further has a liquid-based cooling system. The winch base has a foot portion in between the mounting portions. The liquid-based cooling system is a closed-loop system and is integrated in the foot portion of the electric winch base, mounting portions, and winch drum without requiring connection to further liquid-connection points.
Abstract: An electric motor has a stator and a rotor for rotation relative to the stator. The stator has a plurality of stator windings distributed along the circumference of the stator. Each stator winding is connected to a respective end terminal. Driver circuitry is coupled to the plurality of stator windings for creating a rotating magnetic field for driving the rotor. The driver circuitry has one driver module per stator winding. Each driver module is mounted close to its respective stator winding. Each driver module is connected to the respective end terminal of its respective stator winding without a parasitic impedance of any significance being present in between said driver module and said stator winding.
Type:
Application
Filed:
July 12, 2018
Publication date:
April 22, 2021
Applicant:
Flekkefjord Elektro AS
Inventors:
Alf Magne Midtbø Versland, Eirik Fønstelien, Karoline Ulvan, Anders Fuglesteg Nilsen, Bjørn Harald Snersrud, Geir Pettersen