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WO/2005/021317A1 |
The invention relates to a contactless energy supply for electrical consumers applied to the mobile part of a linear motor, said energy supply being provided without considerable additional material and production costs and without addit...
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WO/2005/020425A1 |
When the drive current supplied to a VCM (3) is large, a driver (D2) is turned on and a driver (D3) is turned off, so that the voltage across a detection resister (RS1) causes a current detected by a current detection amplifier (A1) to b...
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WO2004030407B1 |
A drive mechanism @is comprised with a set comprising a plurality of magnetic bodies, means for supplying a frequency signal to said set,and means for producing movement caused by the attraction/repulsion between the magnetic bodies. The...
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WO/2005/008879A1 |
A device for estimating the pole of a double salient pole motor with high accuracy by eliminating the effect of the double salient pole of the motor, i.e. the effect of axial shift of an alternating current due to the rotor pole position...
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WO/2005/006521A1 |
The invention relates to a method for controlling an electric motor comprising several oscillating motor components (2, 14, 17, 18), designed to drive a small electrical appliance. The oscillating motor components (2, 14, 17, 18) are cau...
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WO/2005/005707A1 |
The invention relates to a method for controlling a washing machine motor (3), wherein electric power is supplied to the motor (3) and the supply of power is adjusted according to at least one operational parameter. The aim of the invent...
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WO/2005/001903A2 |
System and method for establishing and maintaining resonant oscillations of a torsional hinged device such as a pivotally hinged mirror. The system and methods comprise a permanent magnet mounted to the pivoting mirror that interacts wit...
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WO/2004/114511A2 |
A control device (30) receives power source current (Ib) from a current sensor (11) and reactor current (IL) from a current sensor (18). According to the reactor current (IL), the control device (30) detects a maximum value (ILmax) and a...
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WO/2004/114498A2 |
A downhole electric motor for a submersible pump has at least three phases and comprises a permanent magnet rotor and a stator bearing phase windings (A, B and C) in slots in the stator. Each phase winding (A, B, C) incorporates a coil e...
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WO/2004/107537A1 |
A system and method for assembling machines using multiple, structurally equivalent components. The characteristics of each component are tested. The tested components are sorted into component classes using the test information. Individ...
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WO/2004/102784A1 |
A two-phase synchronous motor (SM) drive coupled with a carry roller (4) for carrying a work (W) is connected with an inverter circuit (21). The phase A excitation coil (Ca) of the two-phase synchronous motor (SM) has one end connected w...
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WO/2004/098030A1 |
The invention relates to a switched reluctance machine, especially an SR motor, comprising a stator (10) provided with several stator poles (14), a rotor (11) comprising a number of rotor poles differing from the number of stator poles (...
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WO/2004/082126A1 |
A novel system for adaptively controlling an electric vehicle to maintain desired speed under variable driving conditions. The system includes a control circuit for producing a control signal to control an electric motor of the vehicle. ...
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WO/2004/079884A1 |
An in-vacuum drive device has a first movable element (8) provided on the atmosphere side opposite a vacuum-chamber wall (5) and having a magnetic field system movably provided through a sliding portion, a second movable element (11) pro...
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WO/2004/079880A2 |
This invention relates to a variable speed drive with synchronous AC motor. In the disclosed embodiment, a variable speed drive operates in three modes: a first predetermined mode, in which a function (e.g., trapezoidal current waveform)...
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WO/2004/073158A1 |
A control system for motors, generators and other electric machines that improves machine performance by dynamically adapting to changes. These changes may be in user inputs, machine operating conditions and/or machine operating paramete...
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WO/2004/073140A2 |
An excitation circuit for a flux switching motor. The circuit includes a low-value film capacitor across the DC side of a bridge rectifier. A plurality electronic switches are arranged in an H-bridge configuration for switching current f...
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WO/2004/073155A1 |
Improved in-wheel, near-wheel and direct-drive electric motors for cars and other vehicles. This motor can be cheaper, lighter, more powerful, more efficient, and more reliable than other direct-drive motors. Its high torque-density and ...
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WO/2004/070934A1 |
Subject to user or system selection, one of the motor control schemes is accessed from the memory (56) by a controller (44) for implementation. The controller (44) generates control signals that are applied to energization circuitry (42)...
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WO/2004/064239A1 |
There is provided a multi-axis motor control device resonance frequency detection device capable of detecting resonance frequency of the other axis affecting an operation axis in a machine having multiple axes. The multi-axis motor contr...
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WO/2004/063569A1 |
The present invention relates to a system of controlling a piston in a linear compressor, a method of controlling a piston in a linear compressor, as well as a linear compressor, particularly applicable to cooling systems that may includ...
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WO/2004/057750A1 |
The invention relates to a device which is connected to an alternating current power source (AC/H, AC/N) and which comprises: a two-winding (W1, W2) induction single-phase electric motor (MOT), a phase-shifting capacitor (CM) which is di...
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WO/2004/057747A1 |
The invention provides a power conversion apparatus for converting power from an alternating source to dc, comprising: an input stage for receiving power from the alternating source, which input stage includes an input filter (C1, C2, L1...
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WO/2004/057739A1 |
A method for controlling an operation of a compressor and its apparatus can easily control an operation of the compressor without a request for a high-priced operation control apparatus by operating the compressor with controlling the am...
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WO/2004/055960A1 |
A rotating electrical machine, such as an aircraft starter-generator, includes an exciter that has its stator windings divided into a number of sections. A plurality of switches are electrically coupled to the exciter stator winding sect...
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WO/2004/054087A1 |
A method of characterizing a rotating electromagnetic machine. The machine, such a switched reluctance machine, has a stator, a rotor and a plurality of phases of energizable windings. The method of characterizing includes turning the ro...
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WO/2004/049552A1 |
A discrete rotor position estimation method for a synchronized reluctance motor is provided. A d.c.-link voltage Vdc and a phase current Iph are sensed. A flux-linkage &lgr ph of an active phase is calculated from the sensed d.c.-link vo...
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WO2004036755A9 |
A space vector pulse-width modulator (SVPWM) and a method implemented by the modulator. A precalculation module accepts Ua and Ub modulation indexes and in response thereto, outputs modified Ua and Ub information; a sector finder has a U...
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WO/2004/046550A1 |
A control system is provided for controlling the movement of the piston (10) of the fluid-pumping device (1), the piston (10) being displaceable in a block (5) of the fluid-pumping device (5) and being driven by a motor (2) fed by a volt...
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WO/2004/045059A2 |
A permanent magnet motor includes salient pole stator cores. The poles and/or linking portions therebetween are wound with a plurality of winding coil sets. Mutually exclusive speed ranges are established between startup and a maximum sp...
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WO/2004/045060A2 |
The present invention provides a method of sensorless control of a linear reciprocating electrodynamic machine used for driving a thermoacoustic device, and/or a similar frequency dependent load. Sensorless control is accomplished by est...
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WO2003100957A9 |
A power converter (500) for a switched reluctance motor or a permanent magnet brushless direct current (dc) motor including first and second partial circuits (553, 554) for forming multiple conduction circuits in cooperation with first a...
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WO2003100956A9 |
A method for identifying an operational phase of a motor (203) may include obtaining a first value of a signal that is indicative of the operational phase of the motor (203) and obtaining a second value of the signal after a period of ti...
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WO/2004/033909A1 |
In an overload protective apparatus of a compressor and its method capable of preventing damage of a compressor due to overload by removing an overload protector and using an operation control device operating the compressor, the overloa...
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WO/2004/034562A1 |
When drive control of a generator is performed, PWM control of a switching circuit comprising an FET and a diode connected to the opposite ends of a winding is performed. In the vicinity of a moment in time Lmax where the winding has a m...
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WO/2004/034561A1 |
The invention relates to a circuit arrangement for controlling an oscillating electric motor (1) of an electric small-scale unit which is operated by means of a voltage source (4) embodied as an accumulator or a battery. Said circuit arr...
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WO/2004/031778A2 |
The invention relates to a device or a method that can be carried out with said device for measuring and regulating the revolution speed of motors, more particularly universal motors. The induced voltage (Urw) of a motor winding is measu...
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WO/2004/027529A1 |
The invention relates to a method for regulating the current flowing through an electromagnetic actuator (10). The actuator (10), a first switch (11) and a current measuring circuit (13) form a series connection. A freewheeling diode (15...
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WO/2004/025806A2 |
An electrical machine having stator (30) and rotor (31) is disclosed. The motor has field windings (F) and armature windings (A) energized by a suitable power electronic controller (401). A controller (400) sends signals to the power ele...
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WO/2004/022944A2 |
A method for delivering high torque at low amperage includes reconnecting the windings such that there are more turns. Turns are increased by reconnecting the windings from a delta connection to a wye connection, reconnecting the winding...
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WO/2004/021556A1 |
A controller for synchronous motors, not needing any signal generator and enabling determination of the position of a magnetic pole of the motor rotating at a rotational speed ranging from zero. A controller for controlling the torque an...
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WO/2004/021376A1 |
In installations comprising fixed and mobile structural elements and a rotary current motor as a drive, the rotary current motor can be used for the wireless transmission of both energy and/or data. The transmission from the fixed struct...
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WO2003067739A9 |
A single phase, three-speed induction motor having 4, 6, and 8-pole speed configurations. In one embodiment, the motor is constructed and arranged to be used in connection with a washing machine. The 8-pole speed winding shares a portion...
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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/2004/013952A1 |
Fig. 03(a) shows the variation of the stator inductance of a switched reluctance motor and a gate signal generated by a gate driver circuit in relation to the position (angle) of the rotator. In an example of the present invention, only ...
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WO/2004/010566A1 |
Permanent magnets (4) use both of a magnetic field system of a linear motor and a magnetic scale section as a detected object of a magnetic linear encoder. The pitch between the permanent magnets (4) is set to be identical to the scale p...
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WO/2004/008623A1 |
The invention relates to a method for controlling a capacitor motor and to a converter (8) for rotational speed variable operation of a capacitor motor (1), said converter having a main winding (3) and an auxiliary circuit (4). The conve...
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WO/2004/008626A1 |
A motor driving apparatus (101) for driving a linear vibration motor (100) is privided with an order output determining unit (3) for determining a motor output required of the linear vibration motor (100), and a driving frequency determi...
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WO/2004/004112A1 |
The invention relates to a method for controlling an oscillating electric motor of a small electrical appliance, according to which electricity is at least temporarily fed to a coil (5) in order to create a magnetic field that originates...
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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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