PERMANENT-MAGNET ELECTRICAL MACHINE USING POWER-SAVING CONTROL GEAR Russian patent published in 2005 - IPC

FIELD: electrical engineering; dynamoelectrical machines including power generators.

SUBSTANCE: proposed electrical machine using separate and coordinated positive and negative interaction forces between primary part 2 and secondary part 3 has its primary part incorporating one or more pairs (C₁, C₂) of pole groups (E₁, E₂; E₃, E₄) with pole groups of at least one pair mechanically isolated and electrically offset relative to one another through pole pitch p; each pole group has ferromagnetic core (A₁, A₂, A₃, A₄) and at least electromagnetic winding (B₁, B'₁, B₂, B'₂, B₃, B'₃, B₄, B'₄); its secondary part 3 has series of alternating reverse-polarity permanent magnets (3₁, 3₂ through 3₁₀) and associated control system 5. Each pole pitch corresponds to (n + 1/2) of permanent magnet size in this direction, where n equals 0 or positive integer number. Magnetic forces are balanced out due to typical paired disposition of pole groups acting separately during conductive pole pitches p₁, during power supply to electromagnetic windings, and in absence of power supply during neutral pole pitches p₂ next to pole pitches p₁; each pole pitch corresponds to (n + 1/2) of permanent magnet size, where n equals 0 or positive integer number; control system can build up electromagnetic forces between primary part 2 and secondary part 3 which are balanced by permanent-magnet forces.

EFFECT: enhanced effectiveness of energy conversion by dynamoelectrical machine.

15 cl, 9 dwg