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Matches 401 - 450 out of 11,416

Document Document Title
WO/2009/121666A2
The invention relates to switchgear (10) comprising a power supply (16) built into a common housing, and at least two drives (30, 32). The power supply (16) can be fed by an external supply voltage and an external consumer can be connect...  
WO/2009/118135A1
The method is used to start up a multiphase electric motor operating in star-connected mode. The method provides for conductive bridging of at least one coil portion of one phase of the motor and electrical separation of the bridged coi...  
WO/2009/114198A1
A motor start circuit for an AC induction motor employs a DC relay (20k, 120k) whose NC contacts are placed in series with the start capacitor (18). A half full- wave rectifier arrangement (30) has an AC input connected to the junction (...  
WO/2009/061220A9
Provided is a method of operating a motor at a low speed. The method includes sensing an event corresponding to an angular position of the motor. If the event occurs between a first time threshold and a second time threshold, the method ...  
WO/2009/021302A3
The present invention relates to a system and a method for energizing an auxiliary winding of a capacitor-start single-phase induction motor. Said system and method aim at reducing the voltage level in the bidirectional switches present ...  
WO/2009/021303A3
The present invention relates to a method of actuating a single- phase motor, a system for actuating a single-phase motor and a single-phase motor, especially applied to a system that enables one to actuate single- phase induction motors...  
WO/2008/046885A3
The invention relates to a method for controlling an electric motor by means of a softstarter. The present invention is also concerned with a softstarter device for control of electric motors. According to the invention, the motor torque...  
WO/2009/096649A1
When it is determined that a rotor is initially in a stationary state, a current vector is applied to a coil by a vector control method so as to rotate the rotor in a forward direction from a present position of the rotor regardless of a...  
WO/2009/009232A3
A system and method for determining stator winding resistance, and a temperature of the stator windings based on the stator winding resistance for thermal protection of an AC motor. The system includes a circuit having an input connectab...  
WO/2009/062058A4
A drive apparatus includes a movable member, at least one linear electrical actuator for generating a first force, and at least one linear hydraulic actuator for generating a second force. The at least one linear electrical actuator and ...  
WO/2009/061220A3
Provided is a method of operating a motor at a low speed. The method includes sensing an event corresponding to an angular position of the motor. If the event occurs between a first time threshold and a second time threshold, the method ...  
WO/2009/054740A3
By definition, 1 Oersted = 4π /10 x NI / cm. In 1930, this definition of Oersted was adopted by the I.E.C. Prior to that time the Oersted had been used in the United States as the unit of magnetic reluctance. In 1947, when I finished my...  
WO/2009/077668A2
The invention relates to a system (100) for powering an electric machine (M). One particularly interesting application of the present invention is to the field of powering electric motors used in automobiles. The system (100) comprises a...  
WO/2009/070089A1
A method and system for controlling an electric AC motor having three stator windings, for example for an electric car drive system. The stator windings are connected in a star configuration during operation in a low speed region with hi...  
WO/2009/061220A2
Provided is a method of operating a motor at a low speed. The method includes sensing an event corresponding to an angular position of the motor. If the event occurs between a first time threshold and a second time threshold, the method ...  
WO/2009/062058A1
A drive apparatus includes a movable member, at least one linear electrical actuator for generating a first force, and at least one linear hydraulic actuator for generating a second force. The at least one linear electrical actuator and ...  
WO/2009/056018A1
An apparatus (10, 110, 510, 610) for controlling the starting and stopping of an AC induction motor comprises: a first magnetic permeable portion (20, 40, 120, 140, 520, 540, 620, 640) having first, second and third legs (21, 22, 23, 41,...  
WO/2009/007465A3
The invention relates to a starter device for cranking internal combustion machines, with a connection (K50) for starter control, with an electric starter motor (13), wherein an electric supply line (16) is disposed from a plus-terminal ...  
WO/2009/054740A2
By definition, 1 Oersted = 4π /10 x NI / cm. In 1930, this definition of Oersted was adopted by the I.E.C. Prior to that time the Oersted had been used in the United States as the unit of magnetic reluctance. In 1947, when I finished my...  
WO/2007/139570A3
A trash can can include a sensor for detecting the presence of an object near a lower portion of the trash can. The detection of the object can be used to signal the trash can to open its lid. The trash can can include an electric drive ...  
WO/2006/031839A3
A multi-phase unipolar motor is configured such that each stator pole is formed with bifilar wound primary and inductively associated secondary windings corresponding with one phase. The primary winding at one stator pole corresponding w...  
WO/2009/049052A1
A fan system comprises a hub, a plurality of fan blades, a drive system, and a stationary tube. The hub is configured to rotate. The fan blades are mounted to the hub. The drive system comprises a rolatable hollow output shaft. The hollo...  
WO/2009/001291A3
The control system comprises: a switch (TR) in series with a winding (W) of the motor (M) between two terminals (A, B) which are connected to a supply of an alternating voltage (V), a first detector circuit (1) suitable for providing a s...  
WO/2009/000996A3
The invention relates to a rotary electric machine including a first member (10) capable of generating a rotating magnetic field relative to the first member and a second member (6) provided with a winding through which can flow a curren...  
WO/2009/026688A1
An optical controlling circuit and an electrical controlled circuit such as a motor control circuit are interconnected by an electro-optic interface. A passive optical switch located in the optical circuit at a position remote from the e...  
WO/2009/021303A2
The present invention relates to a method of actuating a single- phase motor, a system for actuating a single-phase motor and a single-phase motor, especially applied to a system that enables one to actuate single- phase induction motors...  
WO/2009/023206A1
A method for controlling a multi -phase motor includes withholding energization of a first phase of the motor for a non-zero period when the first phase's dwell time begins. Energization of the first phase is activated upon the expiratio...  
WO/2009/023205A1
A power factor correction system includes a rectifier that rectifies the voltage of an alternating current (ac) power source to produce a voltage waveform that transitions, in a half sinusoid, from a minimum amplitude to a maximum amplit...  
WO/2009/023106A1
An IGBT/FET-based energy savings device, system and method (1) wherein a predetermined amount of voltage below a nominal line voltage and/or below a nominal appliance voltage is saved, thereby conserving energy. Phase input connections (...  
WO/2009/021302A2
The present invention relates to a system and a method for energizing an auxiliary winding of a capacitor-start single-phase induction motor. Said system and method aim at reducing the voltage level in the bidirectional switches present ...  
WO/2009/017704A1
A gate driver for performing gate shaping on a first transistor of having gate, source, and drain terminals, the first transistor being selected from a switching stage of a power switching circuit having high- and low-side transistors se...  
WO/2009/007465A2
The invention relates to a starter device for cranking internal combustion machines, with a connection (K50) for starter control, with an electric starter motor (13), wherein an electric supply line (16) is disposed from a plus-terminal ...  
WO/2009/001291A2
The control system comprises: a switch (TR) in series with a winding (W) of the motor (M) between two terminals (A, B) which are connected to a supply of an alternating voltage (V), a first detector circuit (1) suitable for providing a s...  
WO/2009/000996A2
The invention relates to a rotary electric machine including a first member (10) capable of generating a rotating magnetic field relative to the first member and a second member (6) provided with a winding through which can flow a curren...  
WO/2008/155156A2
The effectiveness with which an electric tool (10) having a rechargeable battery (24) can be operated is dependant on the temperature prevailing in the electric tool (10). In order to increase the operation of the electric tool (10) at l...  
WO/2008/153576A1
A motor starter is disclosed. The motor starter includes control circuitry integrally arranged with at least one current path and a processor included in the control circuitry. The motor starter further includes at least one processor al...  
WO/2008/027873A3
A solid state reversing AC motor starter that employs a DC power source and a power bridge emρloying insulated gate bipolar transistors that provide an ungrounded three phase AC output. The AC output is connected to the power input of t...  
WO/2008/145647A1
The invention relates to a circuit arrangement for the selective operation of at least two electric machines (1, 2) that are each supplied via a plurality of phase lines, comprising: - one voltage protection module (5) for limiting an in...  
WO2007125251A8
The invention relates to a motorized system for closing a building, of the roller shutter type with the particular feature that it has a two-phase asynchronous motor which comprises two windings (2; 3) and is combined with a speed-varyin...  
WO/2008/138454A2
The invention relates to an electric drive which comprises at least one motor (31) which is or can be supplied with an electric motor current (30) by means of a converter (26), a current regulator (22) by means of which the motor current...  
WO/2008/140153A1
A self-magnetizing motor incorporates a control circuit that starts the motor, controls a magnetizing unit, and then operates the motor. The control circuit can include relay, such as a bi-directional conductive power semiconductor devic...  
WO/2007/081675A3
A control system for a vehicle includes a controller, an object sensor, and a motor. The motor receives power from a power source upon receiving a panel control signal. The motor moves a movable panel of the vehicle along a path between ...  
WO/2006/050271A3
A compressor (26) is powered by a motor (24) which is, in turn, powered by a variable speed drive (VSD) (20). The switching frequency and voltage/frequency relationship of the VSD (20) may be adjusted dynamically to maximize efficiency.  
WO/2008/130560A1
A mover (344) moving a stage (238) along a first axis and about a second axis includes a magnetic component (454), and a conductor component (456). The magnetic component (454) includes one or more magnets (454D) that are surrounded by a...  
WO/2008/130411A1
A solid state soft start controller system (10) has a power supply (20), an electric motor (34), a thyristor (18) electrically interconnected between the power supply (20) and the electric motor (34) so as to selectively allow current to...  
WO/2007/089083A3
The present invention discloses a control apparatus for a linear compressor which can vary a cooling force and prevent an inrush current. The control apparatus for the linear compressor includes a coil winding body (L) laminated on the l...  
WO/2008/130648A1
A method and apparatus are provided for providing one or more brushed motor control signals for controlling the operation of a brushed motor, including a signal for disconnecting the power applied to the brushed motor so that the brushed...  
WO/2008/130957A1
A method of controlling a motorized window treatment provides for continued operation of the motorized window treatment during an overload condition, a low-line condition, or an electrostatic discharge (ESD) event. The motorized window t...  
WO/2007/149360A3
A method and apparatus for an automated waste receptacle includes a waste flap, a motor positioned on a bottom side of the waste flap and an actuator located in proximity of the top side of the waste flap, wherein the actuator is configu...  
WO/2008/005363A3
A method and system for controlling a current regulator motor control for parking a motor rotor in a predetermined position, wherein a first current command and a first angle command are supplied to a current regulator for a first parkin...  

Matches 401 - 450 out of 11,416