Electric motor
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United States of America Patent
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-
Jan 24, 2006
Grant Date -
Dec 16, 2004
app pub date -
Nov 16, 2001
filing date -
Nov 16, 2001
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The invention relates to an electric motor, in particular for high speed operation, comprising a motor housing (4); inside the housing (4), a stator (2) having a core (8) and windings (9) toroidally wound on the core (8); and a rotor (1) inside the stator (2). The motor comprises an inductance controlling ring (3) in soft-magnetic material around the stator core (8), increasing for each phase the leakage inductance and forming for each phase an integrated filter inducatnce (L1, L2, L3) outside the core (8) of the stator (2) but still inside the motor housing (4).
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