Global Patent Index - EP 1020012 A1

EP 1020012 A1 2000-07-19 - A ROTARY ELECTRIC MACHINE

Title (en)

A ROTARY ELECTRIC MACHINE

Title (de)

ROTIERENDE ELEKTRISCHE MASCHINE

Title (fr)

MACHINE ELECTRIQUE ROTATIVE

Publication

EP 1020012 A1 (EN)

Application

EP 98945745 A

Priority

  • SE 9801741 W
  • SE 9703555 A

Abstract (en)

[origin: WO9917432A1] A rotary electric machine of alternating current type designed to be connnected directly to a distribution or transmission network comprises at least one electric winding. The winding comprises at least one electric conductor, a first layer with semiconducting properties surrounding the conductor, a solid insulating layer surrounding the first layer and a second layer with semiconducting properties surrounding the insulating layer. A brushless excitation system, switchable between positive and negative excitation, is also arranged for excitation of the machine. An electric power plant comprises such a rotary electric machine. In a method of exciting a rotary electric machine with both positive and negative excitation current direction, a two-way field over-voltage protection means (8, 10, 12, 14) or a two-way discharge circuit is connected temporarily across the field winding (4) of the machine.

IPC 1-7 (main, further and additional classification)

H02K 19/26; H02K 19/36

IPC 8 full level (invention and additional information)

H02P 9/30 (2006.01); H02K 3/30 (2006.01); H02K 3/40 (2006.01); H02K 19/26 (2006.01); H02K 19/36 (2006.01); H02P 9/02 (2006.01); H02P 9/14 (2006.01)

CPC (invention and additional information)

H02K 19/36 (2013.01); H02P 9/02 (2013.01); H02K 3/40 (2013.01); H02K 2203/15 (2013.01)

Citation (search report)

See references of WO 9917432A1

Designated contracting state (EPC)

AT BE CH DE DK ES FI FR GB GR IT LI NL PT

EPO simple patent family

WO 9917432 A1 19990408; AU 736279 B2 20010726; AU 9292198 A 19990423; BR 9812569 A 20000801; CA 2305422 A1 19990408; CN 1272246 A 20001101; EA 002196 B1 20020228; EA 200000363 A1 20001225; EP 1020012 A1 20000719; IL 134819 D0 20010520; JP 2001518780 A 20011016; NO 20001318 A 20000314; NO 20001318 D0 20000314; NZ 503658 A 20011130; PL 339569 A1 20001218; SE 512721 C2 20000502; SE 9703555 D0 19970930; SE 9703555 L 19990331; ZA 9808874 B 19990604

INPADOC legal status


2004-05-12 [18D] DEEMED TO BE WITHDRAWN

- Effective date: 20031104

2002-02-06 [17Q] FIRST EXAMINATION REPORT

- Effective date: 20011219

2000-09-13 [RAX] REQUESTED EXTENSION STATES OF THE EUROPEAN PATENT HAVE CHANGED

- Free text: SI PAYMENT 20000502

2000-09-13 [RBV] DESIGNATED CONTRACTING STATES (CORRECTION):

- Designated State(s): AT BE CH DE DK ES FI FR GB GR IT LI NL PT

2000-07-19 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20000502

2000-07-19 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

- Designated State(s): AT BE CH DE DK ES FI FR GB GR IT LI NL PT