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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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WO/2001/035521A1 |
Device and method for controlling supply of current and static capacitance to a compressor, the device including a control signal generating part for providing control signals for controlling a current and a static capacitance of the uti...
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WO/2001/018340A1 |
The invention relates to a method for regulating an actual speed of the working stroke of a motor-vehicle window-pane, during its displacement from a closed position into an open position and vice versa and to a device which is suitable ...
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WO/2001/015310A1 |
An electrical machine comprises a rotor without windings, a stator having an armature winding (24, 25) and a field winding (10) for generating a magnetomotive force in a direction extending transversely of the magnetomotive force generat...
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WO/2001/013507A1 |
An electrical machine comprises a rotor without windings, a stator having an armature winding (24, 25) and a field winding (10) for generating a magnetomotive force in a direction extending transversely of the magnetomotive force generat...
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WO/2001/013508A1 |
An electrical machine comprises a rotor without windings, a stator having an armature winding (24, 25) and a field winding (10) for generating a magnetomotive force in a direction extending transversely of the magnetomotive force generat...
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WO/2001/013506A1 |
A combined contactor (1)/slow starter (5). The soft starter (5) is fitted on the contactor (1).
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WO/2001/013511A1 |
An electrical machine comprises a rotor without windings, a stator having an armature winding (24, 25) and a field winding (10) for generating a magnetomotive force in a direction extending transversely of the magnetomotive force generat...
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WO/2000/077920A1 |
A start circuit for a single-phase AC motor controls the current through the start or auxiliary winding (14) based on time rate of change of voltage (dV/dt) or current (dI/dt), or based on the current or voltage dropping or rising some f...
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WO/2000/077919A1 |
A method of controlling an induction motor is disclosed. The method includes the steps of: a) selecting a mode of driving the induction motor; b) manually setting a driving current value, a peak current value, a Y-starting time period, a...
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WO/2000/072428A1 |
A compact miniature motor includes a DC motor (10), a worm gear (32), a pinion transfer gear (34), at least one cluster gear (48), an output gear (56), and an output shaft (52). The gears form a gear train that wraps tightly around the D...
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WO/2000/072437A1 |
A method of starting an open-loop vector control, the method comprising the steps of determining a stator inductance model of a synchronous machine, measuring (2) the stator inductance of the synchronous machine in a plurality of directi...
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WO/2000/069061A1 |
A single-phase variable-frequency power supply (1) with two output voltages (3, 4) drives a single-phase AC motor (6) that has a start circuit (7) and main winding (5). For permanent split-capacitor motors, the power supply (1) maintains...
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WO/2000/068965A1 |
Disclosed is an electromagnetic switch device for star-delta connections including a body, three power terminals respectively connected to three-phase power lines at one side of the body, three main starting terminals respectively connec...
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WO/2000/066952A1 |
A method of starting a freezer and its compressor, in which a small inverter is used to control the number of revolutions of the compressor while maintaining the starting torque of the compressor at an adequate level. The driving motor i...
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WO/2000/057528A1 |
An improvement in a starting system for an electric motor, which drives a hermetic compressor of refrigeration and comprises a main winding (1), and an auxiliary winding (2), which are energized by an electric current source (3), through...
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WO/2000/048302A1 |
The present invention is a power supply (10) that starts a load (20) with a heavy start-up power draw from a power grid (12) and then switches the load to a generator (22) for lower power draw operation thereby avoiding the need for a la...
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WO/2000/043167A1 |
A robot device capable of natural, autonomous motion, which has motion-induced emotional instinct models and is provided with a control means (32) for determining its motion by changing an emotional instinct model based on elements of in...
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WO/2000/039917A2 |
A prime mover such as a microturbine generator is operated to generate dc power, and an inverter is controlled to convert the dc power to ac power. The ac power is supplied to an electric motor. The frequency of the ac power is ramped up...
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WO/2000/036731A1 |
The invention relates to a drive unit for units of a motor vehicle such as window lifters,wipers or the like, comprising an electric motor (10), a power switch arranged in the electric power circuit of the electric motor (10) and a contr...
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WO/2000/019594A1 |
A method and a device for controlling an electric motor arranged to serve as drive source for electrically driven hand tools or stationary machines, which during operation are made subject to varying loads. According to the invention are...
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WO/2000/019593A1 |
A small synchronous motor with high reliability so devised that transition from start operation to synchronous operation is ensured. A microcomputer (22) switching-controls the current application range to a range where the rectified cur...
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WO/2000/017987A2 |
The present invention provides an improved DC electric starter-generator having high starting torque, compact size and weight, increased efficiency and reliability, and being particularly suitable for a starter-generator for aircraft eng...
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WO/2000/014844A1 |
The invention relates to a method for moving a vehicle part between at least two positions, wherein the vehicle part is driven by an electric motor, pulse signals corresponding to the rotational movement of the electric motor are generat...
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WO/2000/008746A1 |
A method for the starting and steady-state supply of a permanent-magnet synchronous motor, particularly for driving a centrifugal hydraulic pump. The method comprises three successive steps: a first learning step, a second starting step,...
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WO/1999/066633A1 |
A device with an electromotor (10) has a microcontroller (12) for influencing at least one motor function and a non-volatile storage element (14) for storing at least one variable as a specification for this motor function. The device al...
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WO/1999/053604A1 |
A starting system for an electric motor, comprising an actuating means (10) provided inside the electric motor and submitted to a magnetic field produced by the main coil (1) upon its energization for operation of the electric motor, sai...
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WO/1999/049563A1 |
An induction machine (20) adapted for variable speed operation, including low and zero speed, comprising: a polyphase stator having two separate stator windings (abc, xyz) with separate input terminals for each winding by which drive pow...
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WO/1999/049562A1 |
A motor starter circuit providing recovery of the energy trapped in the motor windings when the supply voltage and current have opposite polarities by selectively controlling actuation of a plurality of high speed switches. The circuit, ...
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WO/1999/044108A1 |
A synchronization controller capable of constant control of torques at a high speed and with high accuracy even in an application where an abrupt load fluctuation occurs. The controller can set the quantity of a torque for controlling th...
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WO/1999/037014A1 |
The driver circuit (10) comprises a first triac or the like (11) for connection in series with the stator winding (5, 6) of the motor between the terminals (12, 13) of an alternating-current voltage supply, the gate of the first triac (1...
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WO/1999/033163A1 |
A motor controller unit (9) includes an operating program that controllably responds to manual motor start (17) and stop (18) commands for protection of the semiconductor switches (21-23) connected with each phase of a multi-phase electr...
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WO/1999/029035A1 |
A method for controlling turn-on/off of a motor preheating device, wherein a motor (4) is preheated with a high electric power efficiency by generating heat by hysteresis loss and by resistance loss by periodically reversing the directio...
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WO/1999/012253A1 |
An electronic control apparatus to operate an alternating current induction motor protecting same from power line blackouts, brownouts and providing self-adjusting, linearized, non-stepped reduced voltage output coinciding to work load t...
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WO/1998/044615A1 |
Methods and devices are provided for varying the number of poles on a rotor of an electrical motor by providing the rotor of the motor with a conductor control circuit which can control characteristics of the magnetic field generated by ...
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WO/1998/033101A1 |
The invention relates to an array for tracking detection of electric control motors with incremental position detection, specially in adjusting motors in motor vehicles, in which evaluation electronics is provided to determine the positi...
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WO/1998/032214A1 |
The invention relates to a control system for the starting and running of a single-phase synchronous motor with a permanent-magnetic rotor (9), wherein the single-phase synchronous motor (1) comprises at least one stator coil (5, 6) whic...
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WO/1998/029939A1 |
An adjustable speed control for use on a children's ride-on vehicle, where the speed control includes a switch assembly (32) interposed between battery (24) and motors (20, 22) of the vehicle. Switch assembly (32) is selectively operable...
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WO/1998/016995A1 |
Disclosed is an operating mechanism for a vacuum pump. In order to enable a better power adaptation and to have a pump operating independently of the network voltage, it is suggested that the operating mechanism, which may be connected t...
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WO/1998/008291A1 |
This PMDC machine concept operates from a constant dc voltage source (30) with maximum torque capacity throughout its rotational speed range. The back electromotive force (back-emf) produced by the machine windings (21) under the constan...
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WO/1998/001942A1 |
An apparatus for estimating rotor position of a rotating machine having an even number of phase windings selects first and second phase position estimates developed in response to pulses applied to phase windings having associated phase ...
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WO/1997/050162A1 |
An inverter type driving apparatus for variable-speed control of a motor, and more particularly to a motor driving apparatus which restricts an overcurrent and the stop of the apparatus due to the overcurrent at the start of the motor op...
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WO/1997/030509A1 |
An electric induction motor can be given a kick start without excessive current drain on the supply by first connecting a unidirectional supply to a winding of the motor to build up a stationary rotor flux and then applying a starting cu...
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WO/1997/025770A1 |
A motor (33) having terminals U, V and W connected through reactors (32) to the corresponding phases of a power supply (31), each reactor (32) being connected in parallel with a switch (35). The motor is further provided with terminals Z...
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WO/1997/023941A1 |
A hybrid single-phase variable reluctance motor system has a stator (1) having a pair of oppositely disposed salient main poles (4) provided with main windings (12) and at least one pair of oppositely disposed salient auxiliary poles (5,...
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WO/1997/020382A1 |
A servo device comprises the following elements: an electric synchronous motor (1) of linear or rotary design with a mobile runner and fixed stator, either the runner or stator being provided with three-phase rotary current windings and ...
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WO/1997/020381A1 |
An apparatus for controlling the speed of an induction motor (112) includes a first winding (116) and a second winding (118). The first winding (116) and second winding (118) are adapted to be coupled to an AC source (144) for supplying ...
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WO/1997/011523A1 |
An electrical circuit for a switch having a lockout feature is described. The circuit permits both a primary operator and an auxiliary operator to operate a bi-directional motor (30) by activating separate low-current switches (SW1, SW2,...
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