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Matches 1 - 50 out of 34,583

Document Document Title
WO/2021/092550A1
A stand-alone motor unit for use with a piece of power equipment includes a housing, an electric motor, a first fan driven by the electric motor and configured to induce an airflow through the electric motor, a power take-off shaft recei...  
WO/2021/092444A1
A gas engine replacement device includes a housing, a battery receptacle coupled to the housing to receive a battery pack, a motor within the housing, a power take-off shaft receiving torque from the motor and protruding from a side of t...  
WO/2021/090885A1
A vehicular control device (50) comprises: a target value setting unit that sets, by gradually increasing from 0 to a predetermined torque, a target starting torque (Ttgt, Trq*) for starting a vehicle (10); a control unit that performs s...  
WO/2021/092438A1
Bi-directional motor (36) for gas-engine replacement device (10). One embodiment provides a gas-engine replacement device (10) including a housing (14), a battery receptacle (54), a motor (36), a power take-off shaft (38) receiving torqu...  
WO/2021/090679A1
This electric power conversion device (20) is provided with: power wires (30P, 30N); an inverter (40) which includes switching elements (42) and which is connected to one end of a coil (15); an inverter (50) which includes switching elem...  
WO/2021/085177A1
A rotating machine control device (10) is capable of driving a multi-phase rotating machine (800) and a plurality of direct-current rotating machines (710, 720). First terminals (T1) which are one ends of the plurality of direct-current ...  
WO/2021/085439A1
A cooling control device (60) comprises: an inverter control unit that controls the switching of an inverter (21) in order to drive a rotating electrical machine (20); and a cooling control unit that, on the condition that switching cont...  
WO/2021/084847A1
This power conversion system is provided with a fixed pulse pattern modulation unit 2 for generating a gate signal g on the basis of a command modulation rate d and a control phase θ, with reference to a table in which a pulse pattern, ...  
WO/2021/086389A1
Permanent magnet motors (PMMs) can develop oscillations during motor startup that can cause damage to electric submersible pump (ESP) components. A system and method are presented for identifying mechanical and/or electrical caused oscil...  
WO/2021/084617A1
This electric motor drive device (2) has: a connection switching device (60) having switches (61-63) and switching the connection states of the windings (71-73) of an electric motor (7) by performing switching operation of the switches d...  
WO/2021/078758A1
The present invention relates to a method for driving electric motors using a pulse-width-modulated signal, wherein the pulse-width-modulated signal is a square-wave pulse consisting of successive impulses whose impulse duration is adjus...  
WO/2021/073061A1
A frequency converter controlling method and a frequency converter. The frequency converter controlling method comprises: measuring an electrical parameter of a bus of a frequency converter (S101); and if the electrical parameter of the ...  
WO/2021/069222A1
The invention relates to a drive system (2) comprising: - an inverter (6) comprising a first input (14), a second input (16) and N outputs (18); - a rotating machine (8) comprising a stator, the windings of which are connected at the out...  
WO/2021/071207A1
An apparatus capable of efficiently reducing leakage current and noise in various environments by shifting a pulse signal of an inverter configured to control a three-phase drive motor, and a control method of the same are provided. In a...  
WO/2021/069229A1
The invention relates to a drive system (10) comprising: - an inverter (6) comprising N arms, each arm comprising an upper half-arm and a lower half-arm which each comprise at least one switching module; - a rotating machine (8) connecte...  
WO/2021/068446A1
A brushless direct-current electric motor system control method based on a hybrid energy storage unit. The method comprises: constructing a hybrid energy storage unit, wherein an output of the hybrid energy storage unit is connected to a...  
WO/2021/070869A1
This control device for a three-phase brushless motor, using one shunt resistor disposed on a bus of an inverter as a drive circuit for driving the three-phase brushless motor, acquires a two-phase current of the three-phase brushless mo...  
WO/2021/069259A1
A method for controlling an electrical converter system (10) comprises: determining a nominal pulse pattern (t* p,i , Δu* p,i ) and a reference trajectory (x*) of at least one electrical quantity of the electrical converter system (10) ...  
WO/2021/066372A1
The present invention relates to a device (3) for driving a compressor of a vapourous fluid with a housing (2) that features a cooling surface and a power supply arrangement (5). The arrangement (5) exhibits at least one switching elemen...  
WO/2021/065581A1
The purpose of the present invention is to provide a motor drive device not only capable of, during the failure of a certain phase among a plurality of phases, continuing operation by the remaining phases but also capable of, during norm...  
WO/2021/063569A1
The invention relates to a protection device (1) for operating an electric machine (33) at a converter (3), comprising a first and a second conductor (4, 5) of a direct current link (2), a switching device (6) having a first and a second...  
WO/2021/065222A1
This power conversion device (10) is provided with: a connection path (60) for electrically connecting the negative electrode side of a first storage battery (21) and the positive electrode side of a second storage battery (22) to the ne...  
WO/2021/065369A1
The present invention addresses the problem of providing a rotating machine drive system comprising a winding switching device, wherein the rotating machine drive system has a relatively simple configuration, allows wear of electrical co...  
WO/2021/066996A1
A control system (20) and method of controlling a multi-phase electric machine (28) for controlling the flow of electrical current between a voltage source (22) and the multi-phase electric machine or other application/load. The control ...  
WO/2021/066153A1
This electric current detection device detects an electric current flowing through an inverter unit which includes a first switching element and a second switching element connected in series and which generates an alternating-current si...  
WO/2021/059741A1
This motor control device performs PWM control whereby a first element of one of an ON-selected upper arm element and lower arm element is switched on the basis of a duty ratio. Furthermore, the motor control device determines a duty com...  
WO/2021/059436A1
Provided is an alternating-current rotating machine apparatus that can determine, with good precision, whether a control circuit of another system has stopped operating. The alternating-current rotating machine apparatus is provided with...  
WO/2021/057338A1
Disclosed is an energy conversion apparatus, comprising a reversible PWM rectifier (11) and an electric motor winding (12). The electric motor winding (12) at least comprises a first winding unit and a second winding unit; both the first...  
WO/2021/058198A1
The invention relates to a method for controlling an electrical drive (1), wherein the electrical drive (1) comprises a converter (2) and a motor (3), wherein the converter (2) is operated with pulse width modulation. In order to improve...  
WO/2021/060014A1
A gate-driving power device according to the present invention provides DC power to each of a plurality of gate drive circuits with which a power converter is provided. The power converter comprises a voltage converter and one or more AC...  
WO/2021/059350A1
The present invention comprises an inverter (30) for supplying an AC voltage with a variable frequency and voltage value to an electric motor (7) that drives a load element the load torque of which fluctuates periodically, and a control ...  
WO/2021/050377A1
A segmented electrical drive system comprising a DC power bus comprising a DC voltage supply and a capacitor in parallel, an inverter comprising a plurality of inverter segments, a motor including a plurality of stator winding segments e...  
WO/2021/049248A1
Conventionally, changes in switching frequency, such as an increase in switching frequency, have posed the problem of causing greater switching loss in an inverter. A first electric current command generation unit 111 receives input of...  
WO/2021/048935A1
In the present invention, a dual inverter is connected to the open-ended three-phase coil of a three-phase motor. The three-phase coil is connected to a three-phase grid and a DC power supply. The battery-side three-phase inverter of the...  
WO/2021/047768A1
An electrical converter unit and a method for reducing thermal stress of a power semiconductor switch, such as an IGBT, of an electrical converter unit, the electrical converter unit comprising at least a gate control circuit wherein the...  
WO/2021/047221A1
A charging-discharging circuit and system, and an electric vehicle. The charging-discharging circuit comprises a battery (1), an electric motor (5), a first charging interface (6), a first bridge arm (2), a second bridge arm (3), a third...  
WO/2021/047153A1
A compressor driving device, a compressor pressure protection method, and an air conditioner. The compressor driving device comprises a three-phase alternating current power supply input end, a relay module (10), a rectifier circuit (20)...  
WO/2021/047130A1
A modular multi-level converter-based high-power motor driving system, which relates to the technical field of power generation, transformation or power distribution. The high-power motor driving system is composed of a modular multi-lev...  
WO/2021/048023A1
Method, device and system for managing a mining facility (150 A-N) including a plurality of systems is disclosed. The method comprises generating, on a simulation unit (102, 330), system models (210, 220, 230, 240) for one or more system...  
WO/2021/043769A1
The subject of the invention is a method for ascertaining the direction of rotation of a rotating field, wherein the rotating field is generated by three phase-offset AC currents. The rotating field corresponds to a rotating magnetic fie...  
WO/2021/045021A1
A rotating electrical machine (10) control device (50) is applied in a system provided with a power conversion circuit (20) electrically connected to a rotating electrical machine, and a capacitor (21) electrically connected to an input ...  
WO/2021/038670A1
This estimation device (9) comprises a phase current determination unit (12), a time difference calculation unit (13), and an estimation unit (15). The phase current determination unit (12) performs a determination process for determinin...  
WO/2021/038817A1
A control unit (160) turns off the three switching elements of the upper arms of an inverter 120 and turns on the three switching elements of the lower arms thereof, thereby setting the three-phase AC voltage output from the inverter (12...  
WO/2021/038617A1
A power conversion control device for electric vehicles that is small and inexpensive and has a low current consumption is obtained. Respective insulated power supplies (6a) to (6f) that form pairs are connected to gate drive circuits (5...  
WO/2021/036794A1
Provided in the present invention are a control method and a controller. The method comprises: collecting the rotor position of a permanent magnet synchronous motor, the rotational speed of the motor, a quadrature-axis current, a direct-...  
WO/2021/031929A1
The present invention pertains to the technical field of air conditioners, and particularly relates to an inverter air conditioner, a field-weakening control limit voltage configuration method for the same, and a control method. The pres...  
WO/2021/032391A1
The invention relates to a method and to a power converter (3) for producing a motor voltage for an electric motor (7) of a switch drive (5) of an electrical switch (1). In the method, a DC link direct voltage is produced from a supply v...  
WO/2021/033489A1
The objective of the present invention is to suppress torque ripples by enabling superimposition of a harmonic component in a high frequency domain. In a DC-DC converter 31, a voltage that is input from a power source (external battery B...  
WO/2021/029407A1
A dynamo-electric machine control device (10) controls the drive of a rotary electric machine (80) having motor windings (180, 280). A plurality of control units (150, 250) have drive control units (151, 251), mode selection units (152, ...  
WO/2021/025078A1
An EPS control device (2) having two electrical systems derived by external power supplies (6A, 6B) comprises, in each of the electrical power systems: inverters (11A, 11B) that drive a motor (1); control circuits (12A, 12B) that control...  

Matches 1 - 50 out of 34,583