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WO/2010/042188A1 |
Disclosed is a system and method for controlling current in a switched reluctance motor by changing a dwell state including starting the motor in a normal mode, measuring current in the motor, comparing the measured current to a first th...
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WO/2010/039213A1 |
A vehicle electrical system comprises a generator, voltage regulator, electrical energy source, and control device. The generator provides electrical current to one or more electrical loads. Voltage transients from electrical load variat...
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WO/2010/035244A2 |
An electromagnetic step-by-step wobble type micromotor comprises an internal component and an annular component external to the internal one. The external component can play as stator and the internal component as rotor, or vice versa. T...
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WO/2010/024793A1 |
A permanent magnet-type stepping motor (20) broadly includes: a movable member (e.g., a rotor) having a number of magnetic poles (21 ) on a surface thereof, with adjacent poles being of opposite polarity, the number of poles being a func...
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WO/2010/013866A1 |
Disclosed is a step actuator. The step actuator includes a housing; a stator installed in the housing; a rotor positioned radially inward from the stator, the rotor rotating and protruding from one side of the housing; a bearing installe...
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WO/2010/004756A1 |
Provided is a motor device in which the entire length of a motor can be shortened as much as possible while the positional deviation of a shaft in a thrust direction is prevented and a shaft length sufficient to suppress the inclination ...
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WO/2009/114086A2 |
Embodiments of actuators (20) comprise an electromagnetically conductive housing (22); a rotor (24); a first stationary pole member (48); a second stationary pole member (42);; a first permanent magnet (44) connected to the first pole me...
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WO/2009/069383A1 |
Provided is a motor, which can be more miniaturized but can output a high torque although miniaturized. The motor (1) comprises a rotor (10) including a permanent magnet (11) and a spindle (13), and a stator (20) including a pair of magn...
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WO/2009/033594A1 |
The invention relates to a thermal imaging camera comprising a thermal imaging sensor and a cover plate that can be displaced between an open and a closed position by means of an electric drive. The invention is characterised in that the...
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WO/2009/022366A2 |
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WO/2009/006796A1 |
A stepping motor having a stator (5, 5', 5”) with distal paired auxiliary magnetic poles (58, 58', 58”). The motor includes a rotor (3, 3', 3”) having multiple magnetic poles (32, 32', 32”) arranged along its circumference at equ...
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WO/2008/156316A2 |
A stepping motor includes: a rotating shaft; a rotor fixed to the rotating shaft; a terminal unit disposed at a side of the rotor, and having an external power supply applied thereto; a coil coupled to the terminal unit; and an outer yok...
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WO/2008/146061A2 |
Homopolar generator (4). An axial magnetised permanent magnet (11) is sandwiched between two iron rings (12) having many litte teeth (9) facing the air gap (24). The teeth (North poles) of the upper ring are circumf erentially shifted fr...
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WO/2008/146944A1 |
[PROBLEMS] To provide a hybrid rotating electric machine producing little noise and a large torque. [MEANS FOR SOLVING PROBLEMS] An HB stepping motor (10) comprises a two-phase eight-main-pole stator (20) and a rotator (30) composed of t...
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WO/2008/087068A1 |
The invention relates to an electrical machine, in particular an EC synchronous motor with permant excitation in the armature (20), and multiphase winding (18) in a claw pole system (19) of the stator (16), and three connections for a th...
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WO/2008/085520A1 |
This invention pertains to the magnetic motors field and comprises a number of parallel, rotatable shafts (10, 11) whereon are affixed a number of equally spaced, perpendicular extensions (21) which also comprise a number of permanent ma...
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WO/2008/082285A1 |
The invention relates to electric engineering, in particular to electric machines which are provided with a polyphase armature winding and are used for a step electric drive. The aim of said invention is to increase the reliability of a ...
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WO/2008/078607A1 |
A coil bobbin (50) comprises a cylindrical body portion (55) on which a coil (49) is wound, a pair of flange portions formed at both sides of the body portion (55), and terminal portions (51a, 51b) which are formed on the pair of flange ...
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WO/2008/045413A2 |
A high efficiency, low maintenance single stage or multi-stage centrifugal compressor assembly for large cooling installations. The assembly is highly efficient by virtue of a variable frequency drive (VFD) that drives a permanent magnet...
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WO/2008/029971A1 |
A magnetic rotation device includes a rotation axis (20): a plurality of rotating bodies (30- 3) fixedly installed along the rotation axis (20) at a specific interval, each of the rotating bodies (30a-3, 30b-3, 30c-3, 30d-3) being divide...
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WO/2008/018166A1 |
Provided is a motor which is thinned by improving the structure of a section for feeding a driving coil with power. In a motor (1), a stator (2) is provided with substrate holding sections (231, 241) for holding a power feeding substrate...
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WO2007106134B1 |
Electrically driven wheel, device, apparatus and method for a tracked vehicle with built in cogs and a brushless DC motor having permanent magnet high multiple pole motors with a mounting shaft inside of the vehicle wheels. Suspension sy...
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WO/2008/002557A2 |
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WO/2007/134574A1 |
The invention relates to an electromotive device for operating gas exchange valves on internal combustion engines, comprising a rotary actuator exerting forces on one or more valve stem ends of one or more gas exchange valves by means of...
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WO/2007/134566A2 |
A stepper motor (1) based on the reluctance principle has a primary part (2) and a secondary part (3) which is capable of moving in relation thereto. The primary part (2) has at least three pole assemblies (4), which are offset with resp...
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WO/2007/121338A2 |
A stator for a motor having a rotor includes a plurality of laminations each formed in a first elongated arrangement. Each lamination includes a first leg, a second leg, and an intermediate portion that are configured to be rearranged an...
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WO/2007/073671A1 |
A motor includes a housing (1), which has a stator and a shaft (2) therein. A rotor is mounted on the shaft. A guide member driven by a driving device is disposed between the stator and the rotor and can rotate around the shaft. The stat...
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WO/2007/058069A1 |
A stepping motor for generating vibration in which the stopping position can be securely held by increasing a detent torque. The pole teeth of one stator yoke of a set of one-phase stator yokes are formed in two types of pole teeth with ...
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WO/2007/052331A1 |
A stepping motor having a rotor, a stator, and a mold case including a flange and a case body. The outer surface of pole teeth of a stator yoke is exposed at the outer surface of the mold case. The pole teeth to be exposed and their arra...
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WO/2007/048329A1 |
A stepping motor comprises coil assemblys with end coil, and an electronic device having the stepping motor. The stepping motor includes a permanent magnetic rotor and a stator. The rotor has multiple poles and the magnetism between two ...
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WO/2007/044155A1 |
The present invention relates to a motor having a stator with a magnetized rotor rotatably positioned in the stator. The stator and the rotor each have at least two magnetic poles. At least one of the stator poles has a different area co...
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WO/2007/040274A1 |
An upper cover (15) is provided with a step (15f) on the periphery of a supporting section (15d) which supports a rotating shaft (17), for placing a circuit board (16), and on an inner plane of the supporting section (15d), a recessed se...
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WO/2007/033871A1 |
The invention relates to a module (6) for primary parts (12) of synchronous motors (7, 8, 13) which are excited by permanent magnets, which comprise at least one secondary part (9) which is at least sectionally devoid of permanent magnet...
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WO/2007/034868A1 |
[PROBLEMS] To obtain an inexpensive, low-vibration, high-torque dynamo-electric machine having a simple winding such as an HB type stepping motor, including a four winding structure having a two-phase, four-main pole inductor, where a ro...
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WO/2007/033886A1 |
The invention relates to a reluctance motor comprising a rotor (1) and a stator. The rotor (1) is provided with individual rotor poles (4) which have a curved outer contour. A step-type transition (10) is embodied in the outer contour so...
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WO/2007/018261A1 |
[PROBLEMS] To provide a motor not requiring a complex control circuit, produced in a simple structure at low cost, having a long lifetime, and downsized and thinned. [MEANS FOR SOLVING PROBLEMS] Either a rotor (1) or a stator (3) has per...
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WO/2007/014674A1 |
A permanently excited electrical machine (10) having a stator (12) and a rotor (14), in which either the stator (12) has a coil arrangement (28) and the rotor is provided with permanent magnet elements (50) or the rotor has a coil arrang...
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WO/2007/011494A2 |
A stepper motor (30; 41) includes a rotor (32; 43) having equally spaced rotor teeth (34; 45) defining a full step angle, and a stator (36; 47) with stator poles (38; 49) wound with coils that can be driven in a series of phases so as to...
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WO/2006/134800A1 |
[PROBLEMS] To provide a thin stepping motor. [MEANS FOR SOLVING PROBLEMS] This stepping motor (1) comprises a rotor (10) and a stator (20) surrounding the rotor (10). The rotor (10) is formed of a permanent magnet (11) in which a plurali...
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WO/2006/126788A1 |
There is provided a bearingless step motor in which a rotating shaft can rotate while rising from a main body by a magnetic force without using a mechanical bearing. The bearingless step motor comprises a stator including stator cores ha...
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WO/2006/123668A1 |
A pulse motor has a first iron core having iron core teeth, and a second iron core having iron core teeth arranged opposite the first iron core with an air gap in between, and auxiliary pole teeth formed between the iron core teeth. A le...
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WO/2006/118150A1 |
It is possible to suppress generation of vibration without requiring an additional electronic part or modification of an existing arrangement. Yokes (41a to 41d) have a magnetic pole tooth (42) formed in such a way that the ratio of the ...
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WO/2006/115358A1 |
A spindle motor, obtaining more accurate shaft perpendicularity and more convenient assembling process, is disclosed, the spindle motor includes: a rotor; a bearing housing into which the rotor is inserted; a base plate fixing the bearin...
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WO/2006/109679A1 |
A stepping motor, comprising stators disposed at both ends of a rotor magnet in the axial direction of a shaft. Each of the stators comprises an inner yoke and an outer yoke. Each of the inner and outer yokes comprises a plurality of pol...
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WO/2006/108105A2 |
Stator of a rotary electrical machine made of three axially adjacent stator segments (4) . Each stator segment comprises a ring coil (7) with claw poles. The claw poles consist of blocks (32,33,34) forming poles and yoke. The blocks (32,...
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WO/2006/106601A1 |
A polyphase stepping motor enabling a reduction in the vibration and torque ripple of a rotor even if a current flowing to a stator coil is switched. Stator units are divided into pieces of 2n (n means the integer of one or larger) per p...
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WO/2006/097003A1 |
The present application relates to a drive unit for an agitator, which may be attached to the bottom, wall or cover of a mixing vessel. The agitator is especially applicable to purposes where a relatively large and slowly rotating agitat...
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WO/2006/075420A1 |
[PROBLEMS] To provide a stepping motor capable of providing a specified drive torque without sacrificing the magnetic performance of a magnet against stators and increasing a driving performance including control responsiveness by reduci...
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WO/2006/033206A1 |
A stepping motor reduced in size of the outline of a housing in consideration of heat radiation and enabling the installation of a mounting plate in a saved space. A mold case (13) and the mounting plate (14) are mounted by a locked part...
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WO/2006/024344A1 |
The invention relates to a selector drive for automatic manual transmissions of motor vehicles, which comprises an electric motor whose rotation is transmitted to the selector mechanism for selecting a selector position by means of a mec...
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