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WO/2019/057931A1 |
An AC-AC power converter, such as a motor soft starter, includes an input connectable to an AC source with a disconnect switch, an output connectable to an AC load, and phase lines connecting the input and output to transmit power. In-li...
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WO/2019/052640A1 |
The invention relates to a method for operating a permanently excited synchronous machine (1), which has a stator (2) having a stator winding, a rotor (3) and a thyristor controller (4) for controlling phase currents (iu, iv, iw) of the ...
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WO/2019/052639A1 |
The invention relates to a method for operating a permanently excited synchronous machine (1) which is connected to a three-phase power system (8) and has a stator (2) with a three-phase stator winding, a rotor (3) and a thyristor contro...
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WO/2019/036506A1 |
A system comprises a stator magnetically coupled to a rotor and a plurality of conductor assemblies distributed evenly along a perimeter of the device, wherein each conductor assembly is evenly distributed into at least two branches of c...
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WO/2019/026110A1 |
The present invention has a control device (100) that is capable of switching windings between a star connection and a delta connection. The control device (100) controls an inverter (30) that applies a frequency- and voltage-variable al...
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WO/2019/026083A1 |
The present invention relates to a squirrel cage motor, comprising:a stator;a rotor core rotatably disposed axially in the stator; the rotor core having a first end face and a second end face; and a plurality of longitudinal slots radial...
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WO/2018/235189A1 |
A thyristor starting device (100) for accelerating a synchronous machine (20) from a stopped state to a prescribed rotation speed by sequentially executing a first mode for performing inverter (2) commutation by intermittently switching ...
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WO/2018/235187A1 |
A thyristor starting device (100) for accelerating a synchronous machine (20) from a stopped state to a prescribed rotation speed by sequentially executing a first mode for performing inverter (2) commutation by intermittently switching ...
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WO/2018/233211A1 |
Provided is a method for controlling a reversible magnetic starter of an explosion-proof electric multi-turn actuator, which is applied to an underground coal mine with an explosion-proof requirement. When a test/work mode selection swit...
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WO/2018/227121A1 |
A load control device may control power delivered from a power source, such as an alternating-current (AC) power source, to at least two electrical loads, such as a lighting load and a motor load. The load control device may include mult...
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WO/2018/209892A1 |
The invention discloses a dedicated controller and method for a household kitchen garbage disposal, wherein a circuit structure of the controller comprises a double-pole double-throw relay (K1) for controlling the switching of a motor se...
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WO/2018/202277A1 |
The invention relates to a method (100) for operating an electric motor (10), in particular a permanently excited synchronous motor, comprising the steps of: a) establishing an orientation (25) of the rotor (14) in relation to the stator...
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WO/2018/198406A1 |
The purpose of the present invention is to provide a motor control apparatus provided with a rotation position detector capable of detecting the rotation position of the motor every 90° by electric angle, wherein the phase at the start ...
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WO/2018/195559A2 |
A rotating field machine (200) including a stator (140) and a rotor (150) are provided. In particular, a dual-winding rotating field machine (200) in which the stator (140) includes two separate windings can be provided. In one example i...
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WO/2018/185511A1 |
This method for controlling an asynchronous electrical motor (32) of a compressor system (10), comprises: - connecting (100) a capacitor bank (50) of the compressor system (10) in parallel with a first electrical motor (32) of the compre...
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WO/2018/185514A1 |
This method for controlling asynchronous electrical motors of a compressor system, comprises: - receiving an order to start a first asynchronous electrical motor and a second asynchronous electrical motor of a compressor system; - unload...
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WO/2018/187346A1 |
A drive circuit for an electric pump motor is provided. The drive circuit includes an inverter and a contactor. The inverter is configured to supply variable frequency current to the electric motor. The contactor is configured to supply ...
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WO/2018/183783A1 |
A multispeed alternating current (AC) machine circuit is for an AC power source having a first side and a second side. The AC machine circuit includes two or more pairs of power switches, one or more windings, and a control circuit to cl...
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WO/2018/166553A1 |
The invention relates to a method for maintaining a detected absolute position of an electric motor operating as an actuator during a critical operation. The electric motor (2) is controlled by a controller (1) which is supplied with ene...
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WO/2018/167342A1 |
The invention consists in combining the use of a switched system in a permanent-magnet three-phase electric motor, by means of which the winding of the motor can be connected selectively in star or delta connection in order to increase t...
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WO/2018/168161A1 |
Provided is an electric hoisting machine with which, even in cases where a starting capacitor or and drive capacitor are mounted, an increase in size can be prevented and/or an increase in man-hours for mounting can be prevented. This el...
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WO/2018/162192A1 |
The invention relates to a method for operating an inverter (130) for a drive system (100). The inverter (130) is designed to electrically couple a direct-current source (110) to a drive device (120) of the drive system (100). The method...
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WO/2018/158220A1 |
The invention relates to a drive system for a working machine, comprising an electric main drive; a switching device for connecting the main drive to an electric main grid; an electric auxiliary drive; a frequency converter for controlli...
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WO/2018/160122A1 |
An electrical synchronous machine (1) comprises a rotor (20) with rotor field windings (22) and a stator (10) with stator windings as well as a rotor power supply (50) and a stator power supply (60). The rotor power supply (50) is arrang...
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WO/2018/160950A1 |
A motor control assembly (700, 900) may include a transformer (930) having a primary winding (932) through which AC power to a run winding of the motor passes, an AC current sensing circuit (770, 1000) connected to a secondary winding (9...
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WO/2018/150240A1 |
The invention of resistive soft start electromotor is a new method to resolve the problems and drawbacks of present soft starters including primary shock of current inrush and both conserves energy and is cost-effective. The inventive me...
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WO/2018/134840A1 |
The present invention relates to secured externally controllable standalone domestic board breaker system with available protection system which replaces electro-thermo-mechanical era of domestic supply board system, said system comprisi...
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WO/2018/132042A1 |
The invention relates to the field of operating and maintaining electric motors and is intended for restoring winding insulation to its original parameters. A method for controlling an electric motor is proposed, in which the resistance ...
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WO/2018/123524A1 |
A power generation device comprising: an electric motor (18) that has a first object, a second object, permanent magnets, and windings (15, 16, 17), and that generates an electromotive force in the windings by relative motion between the...
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WO/2018/112567A1 |
The present invention relates to a centrifugal switch (100) for activating a single-phase rotating electrical machine, comprising a support (200), an activating disc (300), counterweights (400), and elastic elements (500), wherein each c...
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WO/2018/108651A1 |
The invention describes a method for the computer-assisted operation of an electric motor (M) which is exposed to a thermal load as a result of the rotational motion of its rotor (T) during operation. In this method, measured data is rec...
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WO/2018/104417A1 |
Method for controlling the speed of rotation of an electric motor (M), notably an asynchronous electric motor, by means of a variable speed drive (10) supplied with power by a mains electrical power supply (L1, L2, L3), in which method i...
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WO/2018/104754A2 |
A method of controlling a switched reluctance motor is disclosed herein. The motor comprises a stator carrying a plurality of phase windings and a rotor. The method comprises activating the phase windings in a sequence selected to apply ...
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WO/2018/096218A1 |
A dual actuated power pack (300) comprises a battery (104) and first (101) and second (102) electric motors, as well as a power generator (103). The first electric motor (101) is powered by the battery (104) and the second electric motor...
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WO/2018/086688A1 |
In order to achieve the energy efficiency class IE4 defined in IEC standard 60034, it is necessary to operate permanent-magnet synchronous machines directly from the supply system. Since this is not readily possible, soft-starting device...
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WO/2018/089581A1 |
To avoid control failure resulting from startup of a PMSM that is windmilling (15), initial speed and position are determined before startup (5). A controller uses a FOC routine having a speed PI control loop, field-weaken control, a cur...
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WO/2018/082579A1 |
The invention discloses a method, a device and a system for heating a motor. The method comprises: acquiring a first temperature measured value of the motor (S10); determining whether the first temperature measured value falls within a p...
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WO/2018/078838A1 |
This drive device (100a) is used together with a rotary compressor (8) provided with an electric motor (1) having a coil (3), and drives the electric motor (1). The drive device (100a) comprises: an inverter (103); a connection switching...
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WO/2018/067833A1 |
Embodiments of the present disclosure relate to a refrigeration system that includes a compressor configured to circulate refrigerant along a refrigerant loop, a motor (106-1, 106-2, 106-3) configured to drive the compressor, and a varia...
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WO/2018/048248A1 |
A method for restarting a motor according to the present invention is executed by a motor control center system comprising: an integrated module (100) installed in accordance with a motor control center; a plurality of protective control...
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WO/2018/042920A1 |
In order to stably operate a car in the absence of magnetic pole position signals from a magnetic pole position sensor, this elevator system comprises: a synchronous motor which drives the car; a brake; and a drive control device for the...
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WO/2018/035781A1 |
An application method and system for controlling forward rotation in a horizontal winding machine, the method comprising the following steps: detecting a state of a horizontal winding machine (S101); receiving a motor forward rotation op...
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WO/2018/035780A1 |
A vertical winding machine forward rotation implementation method and system, the method comprising the following steps: detecting a state of a vertical winding machine (S101); receiving a motor forward rotation operation command (S102);...
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WO/2018/024832A1 |
The invention relates to a soft starter (10) for connecting at least one main circuit (12, 14, 16), each of which includes a bypass circuit (20) having a semiconductor switch (22). Said soft starter (10) comprises a control unit (40) for...
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WO/2018/015398A1 |
The invention relates to a control apparatus for a refrigerator compressor having at least one two-phase AC asynchronous motor (K1, K2), having mains connection means (10) for connection to a preferably public voltage supply network whic...
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WO/2018/007424A1 |
A method and apparatus is described in which a series of short-circuiting pulses is applied to a motor. A current in the motor is determined after one or more of the series of short circuit pulses has completed. The duration of the short...
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WO/2018/002077A1 |
A method for starting an induction machine (12) without residual flux comprises: scanning a state of the induction machine (12) with different stator frequencies (ωs, 28) by controlling a supply voltage (Vs) applied to the induction mac...
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WO/2017/221595A1 |
Provided is a capacitor-start single-phase induction motor with which a large startup torque can be obtained. This single-phase induction motor is equipped with: a main coil; an auxiliary coil connected in parallel to the main coil; a ca...
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WO/2017/211434A1 |
A controller for a drive motor (60) of a product conveyor belt at a checkout has a phase-gating and/or phase-chopping controller (50) which controls the drive motor (60) in such a manner that the product conveyor belt is accelerated with...
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WO/2017/208229A1 |
An electronic locking apparatus for locking a cabinet doors, single or multistage drawer and a controlling method thereof are provided to lock or unlock easily by using an electronic manner instead of a key. The lock actuator is mounted ...
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