Patents Assigned to Schneider Toshiba Inverter Europe SAS
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Publication number: 20190190414Abstract: A method for controlling an electric motor, implemented in a variable speed drive, the variable speed drive being connected to the electric motor through a transformer, the method including; executing an identification sequence of the transformer for determining gain data corresponding to an inverse function of a transfer function of the transformer; generating a transfer module based on said determined gain data; determining a start-up sequence of the electric motor to be implemented by the variable speed drive by executing the transfer module on a reference current path.Type: ApplicationFiled: November 14, 2018Publication date: June 20, 2019Applicant: Schneider Toshiba Inverter Europe SASInventors: Thomas Devos, Al Kassem Jebai, Francois Malrait
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Publication number: 20190097550Abstract: A control method for verifying the compatibility between an input filter and a variable speed drive. The method includes applying a plurality of successive commands so as to define a plurality of operating points of the electric motor, for each operating point, measuring the DC voltage of the bus, comparing the maximum variation in the amplitude of the DC voltage measured for the operating point with a threshold value, defining a new operating point as long as the maximum variation in the amplitude of the DC voltage is lower than the threshold value, determining an operating range including all of the operating points for which the maximum variation in the amplitude of the DC voltage is lower than the threshold value.Type: ApplicationFiled: September 17, 2018Publication date: March 28, 2019Applicant: Schneider Toshiba Inverter Europe SASInventors: Francois MALRAIT, Mehdi MESSAOUDI
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Publication number: 20190074787Abstract: A method identifies magnetic saturation parameters of an asynchronous electric motor. The method consists in a monitoring and identification sequence including one or several iterations. The method includes applying at the input of the control law of a reference voltage or a reference flux trajectory or a reference range in order to obtain a magnetization current, building a real profile of magnetic saturation including estimate magnetization flux and measures magnetization current, and determining magnetic saturation parameters corresponding to the real profile already obtained.Type: ApplicationFiled: August 1, 2018Publication date: March 7, 2019Applicant: Schneider Toshiba Inverter Europe SASInventors: Al Kassem JEBAI, Francois MALRAIT, Thomas DEVOS, Alain DUTREY
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Patent number: 10205411Abstract: A control method implemented in a variable speed drive for starting a synchronous electric motor, said method including the application, as input, of a reference speed according to a predefined speed profile, the determination of a reference position based on the reference speed that is applied as input, the determination of a voltage in a rotating frame of reference, based on the reference speed that is applied as input, the determination of control voltages to be applied to each output phase depending, on the one hand, on the determined reference position and, on the other hand, on said voltage determined in the rotating frame of reference, and the application of the control voltages to each output phase to obtain an alignment of the position of the rotor of said motor with the reference position.Type: GrantFiled: June 8, 2016Date of Patent: February 12, 2019Assignee: SCHNEIDER TOSHIBA INVERTER EUROPE SASInventors: Al Kassem Jebai, Francois Malrait, Thomas Devos
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Patent number: 10193327Abstract: The object of the present application is to ensure the security of a device when a precharging relay is not closed and a load current passes through a precharging resistor, so as to ensure the customer's security. Provided is a security control method for a system with a precharging circuit, comprising: giving out an error alarm and stopping operating the system when the number of times of undervoltage of a precharging circuit achieves m times and the duration between the first undervoltage and the mth undervoltage is less than or equal to ? seconds, where m and ? are positive integers. Compared with the previous method, the present invention has the following advantages of no danger of combustion and high reliability; and cost saving and no need of adding additional hardware.Type: GrantFiled: September 16, 2013Date of Patent: January 29, 2019Assignee: SCHNEIDER TOSHIBA INVERTER EUROPE SASInventors: Yingqiang Wang, Dawei Liu, Zhe Li
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Patent number: 10141871Abstract: A control method which is deployed in a control installation of an electric motor, the control installation including a first converter controlled for the application of the first voltage pulse edges to an electric motor of a first pulse width modulation, obtained by comparing a first carrier signal, applied at a first chopping frequency, with a first modulating signal, a second converter controlled of a second pulse width modulation, obtained by comparing a second carrier signal, applied at a second chopping frequency, with a second modulating signal. The control method involves the determination of a notional optimum phase-shift angle on the basis of the first chopping frequency and the second chopping frequency.Type: GrantFiled: January 4, 2017Date of Patent: November 27, 2018Assignee: SCHNEIDER TOSHIBA INVERTER EUROPE SASInventors: Mehdi Messaoudi, Hocine Boulharts
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Publication number: 20180328969Abstract: A method for identifying a resistance value (Rr) of the rotor of an electric induction motor (M), including determining a reference voltage (urefS) on the basis of a chosen value ({circumflex over (R)}r) for the resistance of the rotor of the electric motor, applying a control voltage (uS) to the electric motor, the control voltage being determined on the basis of the reference voltage (urefS), acquiring the values of the currents (i1, i2, i3) measured in the three phases of the electric motor, so as to deduce a stator current (iS) of the electric motor therefrom, comparing the obtained stator current (iS) with a predetermined value (irefS), correcting the value ({circumflex over (R)}r) used for the resistance (Rr) of the rotor and applying steps a) to d) until obtaining a stator current (iS) equal to the predetermined value.Type: ApplicationFiled: April 20, 2018Publication date: November 15, 2018Applicant: Schneider Toshiba Inverter Europe SASInventors: Francois Malrait, Thomas Devos, Al Kassem Jebai
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Publication number: 20180129177Abstract: A method and a system for controlling a multipump system used to pump a fluid. The system includes n pumping cells (Ci) connected in parallel, with n greater than or equal to 2. The system is controlled by using a reference pressure difference. The method includes estimating a pressure difference (dPpumpi) generated by each pumping cell (Ci) taking into account of a quadratic correction value (HEGi) representing the head losses of the pumping cell, estimating a pressure difference (dPSys) of the multipump system from the pressure difference estimated for each pumping cell, comparing the multipump estimated pressure difference (dPSys) with the reference pressure difference (dPsp) in order to control the reference speed (Wref) to be injected into a control loop of the multipump system.Type: ApplicationFiled: October 17, 2017Publication date: May 10, 2018Applicant: Schneider Toshiba Inverter Europe SASInventor: Sylvain COIN
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Publication number: 20180131291Abstract: A modular multi-level power converter device including an AC output, including a modular multi-level DC/AC converter including a plurality of arms in parallel, ends of which define input terminals, each arm including two lines of modules in series, each switching module including a pair of switches in series, mounted on terminals of an energy-storage device, the DC/AC converter adjusting frequency at an output of the converter device. The device further includes a converter including a DC output, including two output terminals connected to the input terminals of the DC/AC converter, the converter including a DC output adjusting amplitude at an output of the converter device, the DC/AC converter further including a mechanism controlling the switches of the modules, which apply a full-wave command to the switches during at least one time interval, the modules of a single line being in a same state simultaneously.Type: ApplicationFiled: April 15, 2016Publication date: May 10, 2018Applicant: Schneider Toshiba Inverter Europe SASInventors: Jean-Paul LAVIEVILLE, Cong Martin WU
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Patent number: 9949413Abstract: A heat-dissipating structure for a variable speed drive (VSD), a VSD device having the heat-dissipating structure, and a method for controlling the heat-dissipating structure. The heat-dissipating structure comprises: an electronic element array, having a first end and an opposite second end, electronic elements in the array producing heat during operation; a heat-dissipating fan, disposed at the first end of the array and used to conduct cooling air to flow between the first end and the second end to cool the electronic elements in the array; and a control apparatus, for controlling operation of the fan, the control apparatus controlling the fan so that the fan rotates at a first rotation direction within a first time period to conduct the cooling air to flow from the second end to the first end, and rotates at a second rotation direction contrary to the first rotation direction within a second time period to conduct the cooling air to flow from the first end to the second end.Type: GrantFiled: September 29, 2014Date of Patent: April 17, 2018Assignee: SCHNEIDER TOSHIBA INVERTER EUROPE SASInventors: Yingqiang Wang, Haiyuan Yu
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Patent number: 9912273Abstract: A method for controlling an asynchronous electrical motor, implemented in a processing unit associated with a power converter connected to the electrical motor, the method including an identification phase, which includes generating a speed trajectory in input of a control law of the motor in order to make the speed reference take several determined successive values, for each value taken by the speed reference, determining the voltage at the terminals of the electrical motor, for each value taken by the speed reference, determining and storing the flux value for which the voltage at the terminals of the electrical motor is equal to a determined threshold value.Type: GrantFiled: March 7, 2017Date of Patent: March 6, 2018Assignee: SCHNEIDER TOSHIBA INVERTER EUROPE SASInventors: Francois Malrait, Al Kassem Jebai, Thomas Devos
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Publication number: 20170302199Abstract: A control method implemented for an electric motor control installation, the control installation including a first converter having controlled switching arms for applying first voltage edges to a first electric motor connected to the first converter by first output phases, a second converter having controlled switching arms for applying second voltage edges to a second electric motor connected to the second converter by second outlet phases, the control method including a step of synchronising first voltage edges with second voltage edges in order to minimise the common-mode currents generated by the installation.Type: ApplicationFiled: April 12, 2017Publication date: October 19, 2017Applicant: Schneider Toshiba Inverter Europe SASInventors: Hocine BOULHARTS, Mehdi MESSAOUDI, Arnaud VIDET
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Publication number: 20170288587Abstract: A method for controlling an asynchronous electrical motor, implemented in a processing unit associated with a power converter connected to the electrical motor, the method including an identification phase, which includes generating a speed trajectory in input of a control law of the motor in order to make the speed reference take several determined successive values, for each value taken by the speed reference, determining the voltage at the terminals of the electrical motor, for each value taken by the speed reference, determining and storing the flux value for which the voltage at the terminals of the electrical motor is equal to a determined threshold value.Type: ApplicationFiled: March 7, 2017Publication date: October 5, 2017Applicant: Schneider Toshiba Inverter Europe SASInventors: Francois MALRAIT, Al Kassem JEBAI, Thomas DEVOS
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Patent number: 9768617Abstract: The invention relates to a power management system, comprising: a power source; a source of renewable energy; a power converter; a first selection means arranged to connect the input of the power converter either to the power source or to the source of renewable energy; a second selection means arranged to connect the outlet of the power converter either to the power source or to a system for storing power; and a means for synchronizing the first selection means and the second selection means, which operates according to pre-established operation rules.Type: GrantFiled: June 14, 2012Date of Patent: September 19, 2017Assignee: Schneider Toshiba Inverter Europe SASInventor: Allan Pierre Barauna
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Patent number: 9755547Abstract: The present invention relates to a control system for an electric charge, said system comprising: —A first power converter (VV1) and a second power converter (VV2) connected in parallel, —A first control unit (UC1) associated with the first power converter and a second control unit (UC2) associated with the second power converter, —The second control unit (UC2) comprises a main control module (M1_2) for determining a second output voltage (v?2) to apply the electric charge and a secondary control module (M2_2) to determine a control voltage (?v?k) to be applied to said second output voltage (v?2), said control voltage being determined from the difference between the output current (i?2) of the second power converter and the output current (i?1) of the first power converter.Type: GrantFiled: September 11, 2014Date of Patent: September 5, 2017Assignee: SCHNEIDER TOSHIBA INVERTER EUROPE SASInventors: Francois Malrait, Michael Hernandez
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Publication number: 20170244343Abstract: A control method which is deployed in a control installation of an electric motor, the control installation including a first converter controlled for the application of the first voltage pulse edges to an electric motor of a first pulse width modulation, obtained by comparing a first carrier signal, applied at a first chopping frequency, with a first modulating signal, a second converter controlled of a second pulse width modulation, obtained by comparing a second carrier signal, applied at a second chopping frequency, with a second modulating signal. The control method involves the determination of a notional optimum phase-shift angle on the basis of the first chopping frequency and the second chopping frequency.Type: ApplicationFiled: January 4, 2017Publication date: August 24, 2017Applicant: SCHNEIDER TOSHIBA INVERTER EUROPE SASInventors: Mehdi MESSAOUDI, Hocine BOULHARTS
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Patent number: 9741486Abstract: The invention relates to a differential mode and common mode choke comprising: a ferromagnetic core comprising three branches (1, 2, 3) extending between a bottom part (5) and a top part (4), a first coil (b1) wound around the first lateral branch (1), a second coil (b3) wound around the second lateral branch (3), the first lateral branch (1) being separated from the top part (4) by a first air gap (e1) and from the bottom part (5) by a second air gap (e10), the second lateral branch (3) being separated from the top part (4) by a first air gap (e3) and from the bottom part (5) by a second air gap (e30), the central branch (2) being separated from the top part (4) by a first air gap (e2) and from the bottom part (5) by a second air gap (e20).Type: GrantFiled: March 18, 2014Date of Patent: August 22, 2017Assignee: SCHNEIDER TOSHIBA INVERTER EUROPE SASInventors: Yves-Laurent Allaert, Cyrille Planque
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Patent number: 9735664Abstract: A multi-level power converter comprising: n input stages (Ein_n), n being at least equal to 1, each input stage comprising n+1 identical input converters (CONVx_En) connected together, the input converters (CONVx_En) exhibiting an identical topology, chosen from among the architectures of the NPC (Neutral Point Clamped), ANPC (Active Neutral Point Clamped), NPP (Neutral Point Piloted) and SMC (Stacked Multicell Converter); an output stage (Eout) connected to the input stage of rank 1 and comprising an output converter (CONVs) supplied with a differential voltage (Vfloat) resulting from a first electrical potential applied to the output of a first input converter of the input stage of rank 1 and from a second electrical potential applied to the output of a second input converter of the input stage of rank 1, the output converter (CONVs) exhibiting a topology chosen from among an architecture with floating capacitor (FC), SMC (Stacked Multicell Converter), NPC (Neutral Point Clamped), NPP (Neutral Point PilotedType: GrantFiled: January 16, 2014Date of Patent: August 15, 2017Assignee: SCHNEIDER TOSHIBA INVERTER EUROPE SASInventor: Jean-Paul Lavieville
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Patent number: 9685857Abstract: The invention relates to a control device (1) employed in a switched electrical power supply system to control a DC/DC converter of said switched electrical power supply system, said control device comprising a first input terminal (A) and a second input terminal (B), a first transistor (T1) connected via its source to the second input terminal (B) and a second transistor (T2) furnished with a gate (G) and connected via its drain (D) to the first input terminal (A), and via its source (S) to the first transistor (T1), the control device comprising a control assembly connected to the gate (G) of the second transistor (T2) and to the second input terminal (B) and comprising a capacitor (Ca) and a first Zener diode (Dz1) connected in series to said capacitor (Ca) and a second Zener diode (Dz2) connected between the gate (G) and the source (S) of the second transistor (T2).Type: GrantFiled: February 10, 2014Date of Patent: June 20, 2017Assignee: SCHNEIDER TOSHIBA INVERTER EUROPE SASInventors: Allan Barauna, Hocine Boulharts
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Patent number: 9639795Abstract: A display method displays at least one matrix code on a screen of an electronic display device, to send data to electronic equipment including a mechanism reading the matrix code. The display device includes the screen and a mechanism displaying information on the screen. The display method includes: generating at least one two-dimensional matrix code from data to be sent; displaying the matrix code on the screen, matrix codes being displayed successively when plural matrix codes are generated; partitioning a primary image corresponding to a generated matrix code into at least two secondary images, dimensions of the primary image being equal to dimensions of the matrix code and dimensions of the secondary image being smaller than or equal to resolution of the screen, the corresponding matrix code being displayed as secondary images during the display, and the secondary images being displayed successively on the screen.Type: GrantFiled: June 23, 2014Date of Patent: May 2, 2017Assignee: SCHNEIDER TOSHIBA INVERTER EUROPE SASInventors: Francois Malrait, Marc Geneau