Abstract:
PURPOSE: An arrangement and a method for cooling an electrical machine are provided to efficiently cool down an electric machine by transmitting refrigerant between to a sheet pack. CONSTITUTION: An electric machine(1) comprises an outer rotor(2) revolving around a rotary shaft. A cylindrical stator(5), including a sheet pack(4) in the end part of an air gap(3), is arranged inside a rotor. The sheet pack is alternately arranged in shaft direction of the electric machine. A spiral spacer is arranged between the sheet pack to separate the sheet pack. The stator is cooled down by a spiral duct.
Abstract:
PROBLEM TO BE SOLVED: To obtain a method for effectively cooling an apparatus and an electrical machine which is manufactured at low cost. SOLUTION: The electrical machine 1 has an outer rotor 2 rotating about its rotating shaft and a stator 5 mounted inside it. A first flow 6a of a coolant is led from both ends of the stator 5 into a stator sheet pack 4 through a cooling channel 7a in the axial direction, and a second flow 6b enters an air gap 3, from both ends of the stator 5 and is led into the stator sheet pack 4 through at least one cooling channel 8 in the radial direction. Both flows 6a, 6b of the coolant are led into an heat exchanger 9, disposed inside the stator sheet pack in a radial direction. A fan 11 is disposed inside the heat exchanger 9, in a radial direction R to feed the first flow 6a and the second flow 6b of the coolant into both ends of the stator 5. COPYRIGHT: (C)2011,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a cooling element for a stator of an electric machine. SOLUTION: The electric machine 25 has a rotor and a stator 26. A surface 14 on the periphery of the stator of the electric machine 25 is divided into sections 22b equal to the length L of the stator. The cooling element has at least two modules 2. Each of the modules 2 has adjustable pipes 3a which are practically parallel to the longitudinal axis of the stator. The ends of these pipes are coupled by connecting parts 4a. A coolant flows (Fd) in these adjustable pipes 3a in the opposite direction. The maximum width of each of the modules 2 is equal to the width Wu of the peripheral surface section 22b. COPYRIGHT: (C)2010,JPO&INPIT
Abstract:
The object of the invention is an arrangement in a synchronous machine, which synchronous machine contains n-phased winding (U,V,W) and has constantly operating magnetisation means. According to the invention, switching means have been fitted in a synchronous machine, by means of which the synchronous machine can be connected to the input source and disconnected from the input source, together with switching devices (K1,K2,K3) by means of which the phase winding (U,V,W) can be isolated from other phase windings and/or the input source and connected to other phase windings (U,V,W) and/or input source.
Abstract:
método para fabricação de bobina de enrolamento de máquina elétrica. o objetivo da invenção é um método para fabricação de uma bobina elétrica a partir de cabo chato (2) e uma máquina elétrica que inclui a bobina. a bobina inclui flancos (8, 10) que ficam localizados nas fendas da máquina elétrica e fora das fendas existem extremidades da bobina (12, 14) que formam as partes finais das bobinas. o método de acordo com ainvenção inclui as fases segquintes: um cabo chato (2) é enrolado em um lingote de bobina (6) no qual círculos de enrolamento estão nos mesmos planos e no qual existem dois flancos de bobina retos paralelos (8, 10) nos lados opostos da bobina. os flancos paralelos da bobina (8, 10) são então curvados um para o outro substancialmente em um ângulo reto quando comparado com o plano de enrolamento.
Abstract:
In an electrical machine cooling element according to the invention, the electrical machine (25) comprises a rotor and a stator (26). In the electrical machine (25), the outer surface (14) of the stator is divided into sections (22a-b) equal to the length (L) of the stator. The cooling element (1) comprises a minimum of two modules (2), each module (2) comprising adjacent pipes (3a-c) substantially parallel to the stator's longitudinal axis, the ends of the pipes being joined using connecting parts (4a-b). The cooling agent flows in opposing directions (F d ) in the adjacent pipes, and the width of the module (2) is equal to the width (Wu) of the outer surface section (22a-b) at most.
Abstract:
The object of the invention is an arrangement in a synchronous machine, which synchronous machine contains n-phased winding (U,V,W) and has constantly operating magnetisation means. According to the invention, switching means have been fitted in a synchronous machine, by means of which the synchronous machine can be connected to the input source and disconnected from the input source, together with switching devices (K1,K2,K3) by means of which the phase winding (U,V,W) can be isolated from other phase windings and/or the input source and connected to other phase windings (U,V,W) and/or input source.
Abstract:
The object of the invention is a pole module (30) for the rotor of an electrical machine and a corresponding rotor. According to the invention, the pole module (30) comprises a non-magnetic body part (2') equal in width to at least two rotor poles (8) and at least two sheet packs (10) attached to the body part (2') that constitute corresponding poles (8) of the rotor. In the pole module (30), a permanent magnet piece (18) is fitted in the space between two adjacent sheet packs (10).