Search International and National Patent Collections

1. (WO2018100120) ELECTRIC MACHINE WITH A COOLING SYSTEM AND A METHOD FOR COOLING AN ELECTRIC MACHINE

Pub. No.:    WO/2018/100120    International Application No.:    PCT/EP2017/081085
Publication Date: Fri Jun 08 01:59:59 CEST 2018 International Filing Date: Fri Dec 01 00:59:59 CET 2017
IPC: H02K 9/20
H02K 9/16
H02K 9/18
F28D 15/02
Applicants: ELAPHE POGONSKE TEHNOLOGIJE D.O.O.
Inventors: STROJNIK, Martin
GOTOVAC, Gorazd
DETELA, Andrej
Title: ELECTRIC MACHINE WITH A COOLING SYSTEM AND A METHOD FOR COOLING AN ELECTRIC MACHINE
Abstract:
The present invention relates to an electric machine with a cooling system, comprising a stator, a rotor rotatable relative to the stator an evaporator thermally coupled to a heat source of the electric machine, a two-phase coolant configured to evaporate within the evaporator when applied with a heat flow emitted by the heat source of the electric machine and a condenser in which the coolant condenses and an according method. In order to improve the ability of the cooling system to reliably absorb the heat emitted by the electric machine in different possible operation modes while providing a simple and reliable construction it is suggested to provide a first coolant reservoir coupled to the evaporator and at least partially filled with a liquid coolant, whereby the enthalpy of the coolant within the first coolant reservoir is adapted to increase or decrease dependent on the amount of heat flow emitted by the heat source of the electric machine.