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WO2003100948B1 |
A two-phase switched reluctance motor (fig.4) with a pluraty of rotor poles (404) having asymmetric reluctance (405) about a central raidla axis of the respective rotor pole and a plurality of salient stator poles (402) having the same w...
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WO/2004/012327A1 |
A method and an apparatus are described for monitoring a rotating synchronous electric machine (9), which comprises a rotor having a rotor winding and a stator having a stator winding. The method comprises the steps of determining the st...
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WO/2004/001933A2 |
This invention relates to an alternating current electric motor, single phase or multiphase or synchronous generator, with primary windings (main windings) and de-saturation additional windings. Each additional winding is fed through one...
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WO/2003/105331A2 |
A generator starting system utilizes a portable universal battery pack to start an internal combustion engine of the generator. The system is adapted to utilize any one of a plurality of universal battery packs having outputs of varying ...
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WO/2003/103128A1 |
A three phase motor starting system is provided to reduce the in-rush current to the motor in order to obtain a soft start of the motor. The soft start of the motor equates to reduced impact forces on motor parts and device components co...
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WO/2003/100944A1 |
A rotor for an electrical motor (100) may include a plurality of salient radial field rotor poles (109) and a plurality of salient axial field rotor poles (110). The radial field rotor poles (109) and the axial field rotor poles (110) ar...
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WO/2003/100958A1 |
A power converter for a switched reluctance motor (SRM) or a permanent magnet brushless direct current (dc) motor (PMBDCM) that includes a front-end boost partial circuit (551) for connecting with a first phase winding of the motor (552)...
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WO/2003/087634A1 |
The invention relates to a method for determining the moving direction of a motor, especially an electric motor of a transmission actuating system for gear selection and/or shifting, whereby at least one signal of the motor is detected. ...
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WO/2003/079755A2 |
An asymmetrical drive motor (150) and apparatus (100) with the asymmetric drive motor (150) driving a barrier (112). The asymmetric motor (150) drives the barrier (112) at different drive powers according to direction, time of travel, sa...
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WO/2003/072388A1 |
A control system for individually controlling power from a single voltage source to a plurality of motors is described. A chopper circuit, in conjunction with the control system, generates drive−pulses, which operates the IGBT switchin...
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WO2003007468A9 |
An HVAC system has at least one variable speed controller for an AC induction motor, especially of the Permanent Split Capacitor (PSC) type. The variable speed controller provides switched power via a modulating triac to the main coils o...
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WO/2003/056693A1 |
Control apparatus for the starting of a high-voltage alter-nating-current motor (M1) with a voltage rating of at least 3 kV, the electric power supply to said motor being implemented using a transformer (T1) that raises the voltage of a ...
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WO/2003/045724A2 |
In an electrically driven automobile, a dynamo-electric generating device(s), (12) is attached to one or more free-running wheels (8, 9) of the vehicle, which are not connected to the power drive of the vehicle. The free-running wheels (...
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WO/2003/044928A1 |
An improved polyphase induction motor (400) having one or more capacitive elements (114, 114a, 114b) electrically connected in parallel with phase windings (102, 106, 302, 306), from an off-center tap (116, 116a) to an end (121, 104, 304...
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WO/2003/038986A1 |
The invention relates to a circuit for operating an electric motor (46), said circuit containing a timer (22). A regulator produces a first switching signal (20) for triggering the current supply of the electric motor (46), according to ...
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WO/2003/030347A1 |
When a canned motor (3) is stopped, the voltage at which the canned motor (3) is not started and the input current of the canned motor (3) is not higher than rated current is applied to the canned motor (3). By applying the voltage, a st...
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WO/2003/021751A1 |
Reversible motor including a stator comprising two windings (a-a', b-b'), a start apparatus (c-c') connected to one of the two windings (a-a', b-b') in series, switches (310,330,350) for providing power to the two windings selectively, w...
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WO/2003/021761A1 |
A device for implementing a method for controlling a switched-reluctance motor having a rotor and excitable phases is disclosed. The device comprises a controller (51) and interface (54) for implementing a master control routine includin...
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WO/2003/009448A2 |
The invention relates to a method for controlling a reluctance motor and a reluctance motor with a rotor (1) and a stator, whereby the rotor (1) comprises a number of rotor segments (2) and the stator has a number of coils (3) dependent ...
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WO/2003/007466A1 |
A DC motor drive circuit for stabilizing the rotation of the DC motor just after power supply and for preventing its reverse rotation just after a stop of power supply. As the circuits for supplying a power source voltage to a DC motor (...
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WO/2002/095922A1 |
A stator in a synchronous fan includes first and second main windings, and an auxiliary winding. Illustratively, the first and second main windings are wound in a bifilar arrangement. In addition, the stator has a switch to switch the st...
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WO2002061924A9 |
A controllable switching mechanism (100) integrally housed within a motor (100) to optimally couple the windings (112, 114, 116) of an AC motor for improved torque-speed characteristics. The switching mechanism (100) includes a plurality...
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WO/2002/091558A1 |
A system for controlling a synchronous motor, comprising a current sensor for measuring the electric current of a synchronous motor; a coordinate transformer for coordinate-transforming the electric current measured by the current sensor...
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WO2001059916A9 |
A motor includes a stator core, a rotor in rotational relationship with the stator core and a main winding on the core. The main winding includes a 4-pole configuration and an 8-pole configuration and the motor has a 4-pole auxiliary win...
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WO/2002/060046A1 |
A starting circuit for an induction motor is provided whereby a stationary rotor flux is established then a stored charge supplied to a motor winding in order to provide a starting torque. Before applying a mains power supply to the moto...
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WO/2002/051592A1 |
A speed controller operates a DC-powered fastener drive assembly to efficiently drive fasteners from a DC power supply (22), thereby achieving a fully portable hand tool. In particular, the speed controller accelerates a flywheel (28) wi...
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WO/2002/052711A2 |
A motor starter. The motor starter comprises a motor; start, run, shorting and transition contactors operably associated with the motor; and run, start, shorting and transition auxillary contactors. The transition auxillary contactor ope...
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WO/2002/050618A2 |
A power generation system is disclosed having several embodiments such as in one embodiment, the power generation system includes a fuel source to provide fuel, a turbogenerator (200), coupled to the fuel source, to generate AC power, an...
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WO/2002/045250A1 |
The present invention relates to a power conversion device. It is an object of the present invention to limit an inrush current while reducing overall weight and volume of the device even under a high rated power. In order to achieve the...
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WO/2002/045251A1 |
A method and system that provides for simultaneous or independent start-up of two or more three-phase AC motors (1, 4) with reduced starting current. Two AC motors have their stator windings connected in series across the power network. ...
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WO/2002/043064A2 |
A motor current control method is provided to reduce voltage and current spikes within a spindle motor and a power supply. Subsequently, the amount of current applied to the spindle motor is monitored. In addition, an apparatus for limit...
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WO/2002/041485A1 |
The present invention discloses devices and methods for improved starting and stopping of rotary motors. A rotary electrical machine (3) is supplied with a voltage from a voltage supply (10). The magnitude of a phase current is measured....
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WO/2002/041468A2 |
The invention relates to a device and a method for determining an electrical starting rotor angle of an electromotor. According to the invention, the electromotor (10) is subjected to an approximately sinusoidal voltage and the correspon...
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WO/2002/009264A1 |
An electronic circuit for starting a single phase induction motor, of the type containing a rotor and a stator with at least one running coil (B1) and one starting coil (B2), for operating jointly with an alternating current source (F), ...
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WO/2001/097364A1 |
In a method for starting an electric motor, which is operated by alternating current and which has a stator (1) with a main winding (H) and a first auxiliary winding (AUX1) and a rotor with permanent magnets and at least one short-circui...
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WO/2001/096735A1 |
The invention relates to a starter device (1) for an internal combustion engine (2). Said starter device is provided with an electric starter motor (3), a power supply (16), and with a drive device (4) for the starter motor (3). The driv...
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WO/2001/089073A2 |
A method is provided for controlling the starting of an AC induction motor (12) with a soft starter (14). The windings (20a-20c) are connected in a delta configuration and each winding has a corresponding thyristor switch (22a-22c) conne...
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WO/2001/089074A2 |
A method is provided for controlling a three-phase, AC induction motor (12). Each phase of the AC induction motor (12) is connected to an AC input source (18) by a thyristor switch (22a-22c) and a bypass contactor (24a-24c) connected in ...
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WO/2001/089072A2 |
A method is provided for controlling a three-phase, AC induction motor (12). Each phase of the AC induction motor (12) is connected to an AC input source (18) by a thyristor switch (22a-22c) and a bypass contactor (24a-24c) connected in ...
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WO/2001/078225A1 |
A single-phase motor (10) particularly for submersed pumps, characterized in that it comprises an annular capacitor (14) interposed between the pump coupling head (15) and the stator winding pack (12).
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WO/2001/077769A1 |
Disclosed are a power control apparatus and method thereof capable of controlling a load power by adjusting an AC power voltage supplied to a streetlamp, a computer system, and an electronic equipment according to a load characteristic a...
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WO/2001/071901A1 |
Triac controller (200) including a driver (208) providing a firing pulse to a triac within each half period of an alternating current power supply. A soft start subcircuit and a zero crossing detector (215) direct the driver (208) to pro...
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WO/2001/069745A1 |
The invention relates to an assembly for adjusting mobile elements of furniture, comprising a motor, a control circuit which is provided with push-button switches, a current supply circuit, a mains connection, a mains supply circuit, a m...
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WO/2001/061835A2 |
The aim of the invention is to improve a method for controlling an electric driving motor (10) of an adjusting device pertaining to a motor vehicle by means of a variable voltage that is applied to said motor and in such a way that an EM...
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WO/2001/056143A1 |
The invention relates to an electrical switchgear, especially a semiconductor soft-starter with reverse function on semiconductor basis. The aim of the invention is to reduce the number of components required for such a switchgear. To th...
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WO/2001/048907A1 |
A food processor with a motor control circuit that disables speed regulation during motor start operation and high torque operation. Whenever motor speed is less than a set speed, both a motor starter winding (11) and a main winding (13)...
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WO/2001/048903A1 |
The invention relates to a method for operating a 3-phase controller circuit, especially a soft start device for 3-phase motors, with a controllable semi-conductor circuit (2) in two of its three phase branches (L1-T1, L2-T2, L3-T3), res...
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WO/2001/041293A1 |
A method and apparatus for deriving characteristics of a utility signal for synchronizing the output of a motor drive with the utility for a transfer or capture operation. With the drive in idle, the voltage and phase angle of an input t...
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WO/2001/035516A1 |
The invention relates to an alternating motor with starter, wherein the starting element is a capacitor or capacitor bank which connects between power source and motor. When it starts step by step, capacitive reactance will decrease step...
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WO/2001/035520A1 |
Device and method for controlling supply of current and static capacitance to compressors, the device including a control signal providing part for providing control signals for controlling currents and static capacitances to be supplied...
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