Matches 1 - 23 out of 23


Match Document Document Title
US20080265702 Permanent magnetic brushless motor with length adjustable air gap based on load  
A permanent magnetic brushless motor with a length adjustable air gap comprises: a body; a stator secured to one end of the body; a spindle pivotally installed to the body; a part of the spindle...
US20110133592 ROTARY ELECTRICAL MACHINE  
A rotary electrical machine has a mechanism capable of varying an output characteristic, without increasing mechanical loss, or without consuming the electric power that does not contribute to...
US20110074238 Electric Motor With Axially Movable Rotor Assembly  
A mechanical structure (16) for enabling a rotor (28) in a permanent magnet electric motor A to be moved axially relative to a stator (14) under an actuating force, without experiencing frictional...
US20110101815 Electric Motor or Generator with Mechanically Tuneable Permanent Magnetic Field  
Apparatus and method for tuning the magnetic field of brushless motors and alternators to obtain efficient operation over a broad RPM range. The motor or alternator includes fixed windings (or...
US20090108712 SHORT-FLUX PATH MOTORS / GENERATORS  
According to one embodiment of the present invention, an electric machine includes a stator and a rotor. The stator includes a stator pole including a first leg and a second leg, and a gap defined...
US20120126740 Permanent Magnet Motor with Field Weakening  
A permanent-magnet electrical machine is disclosed in which the rotor has a fixed back iron and movable back iron segments. When the movable back iron segments are in a first position, such as in...
US20120074913 Windmill Generator with Mechanically Tuneable Permanent Magnetic Field  
Apparatus and method for tuning the magnetic field of windmill generators to obtain efficient operation over a broad RPM range. The windmill generator includes fixed windings (or stator) inside a...
US20090127963 ELECTRIC MOTOR WITH FIELD WEAKENING  
An electric motor comprising a rotor, a stator and a field weakening device. The rotor has a plurality of magnets mounted thereto, and the stator is located adjacent to the rotor and has a...
US20070096581 Brushless permanent magnet motor/generator with axial rotor decoupling to eliminate magnet induced torque losses  
A permanent magnet motor/generator that includes a stator, a rotor provided with a plurality of permanent magnets at a peripheral surface thereof and having a central axis which coincides with the...
US20120286615 Permanent Magnet Motor with Field Weakening  
A permanent-magnet electrical machine is disclosed in which the rotor or stator have at least one movable iron segment. A magnetic field of the electric machine is weakened when the movable iron...
US20060273682 Permanent-magnet generator with magnetic flux controls  
A permanent-magnet generator with flux control means, which has a device simple in construction to increase or decrease air gaps for flux path in response to an rpm of a rotor, regulating a...
US20090295250 Magnet Type Brushless Generator and Magnet type Brushless Starter  
There is provided a magnet type brushless generator capable of particularly controlling an output voltage to be uniform even in a driving operation at a variable rpm from a low-speed rotation to a...
US20140069151 MOTOR AND WASHING MACHINE HAVING THE SAME  
A motor may adjust interlinkage magnetic flux of a rotor and a stator so as to rotate at high speed by lowering torque during a dehydration operation of a washing machine. The motor includes a...
US20070194651 Electric machine and magnetic field modifying assembly therefor  
Provided is an magnetic field modifying assembly (10) for an electric machine (18) having a stator (24) arranged to generate a primary magnetic field, and a rotor (30) arranged to interact with...
US20140312730 ROTARY ELECTRIC MACHINE  
A rotary electric machine includes: a stator; a rotor; a control device that causes the stator to generate a rotating magnetic field; and a magnetic flux supply element supported by a rotary shaft...
US20070210666 ELECTRIC ROTATING MACHINE  
The electric rotating machine includes a fixed stator fixed to the inner circumferential side of a housing, a moving stator rotatably supported on the inner circumferential side of the housing, a...
US20120286616 MOTOR  
A clutch mechanism moving together with an actuator allows coupling or decoupling an inner rotor to or from a power shaft, thereby controlling a rotation angle. This structure allows a polarity of...
US20070236095 Electric motor apparatus  
A DC electric motor apparatus includes a stationary magnet set which includes an outer, hollow-cylindrical stationary magnet set portion and an inner, solid-cylindrical stationary magnet set...
US20100314963 PERMANENTLY EXCITED ELECTRICAL MACHINE  
The invention relates to a permanently-excited electrical machine with a stator and a rotor. The stator has a coil arrangement and the rotor is provided with permanent magnet elements, or the...
US20120264554 ELECTRIC MOTOR ASSEMBLY WITH MOVABLE ROTOR SEGMENTS TO REDUCE BACK ELECTROMOTIVE FORCE  
An electric motor assembly includes a rotor hub, and a rotor supported on the rotor hub. The rotor hub has first and second hub portions, and the rotor has first and second annular rotor segments...
US20100231081 MOTOR  
A motor is provided with: an inner rotor having inner permanent magnets arranged in a peripheral direction and an outer rotor having outer permanent magnets arranged in the peripheral direction,...
US20160365760 MOTOR STRUCTURE FOR VARIABLE COUNTER ELECTROMOTIVE FORCE  
A motor structure for varying a counter electromotive force is provided. The motor structure includes a rotor that is fixed annularly and concentrically to a radially outside from an exterior...
US20150326101 ROTARY ELECTRIC MACHINE  
This disclosure discloses a rotary electric machine including a magnetic body and a rotor core. The magnetic body includes at least a first columnar part, a second columnar part and a third...

Matches 1 - 23 out of 23