Mitsubishi Electric Corporation

Mitsubishi Denki Kabushiki Kaisha

Mitsubishi Electric Information Technology Centre Europe B.v.

Mitsubishi Electric R&d Centre Europe B.v.

Nicolas Voyer

Hideshi Murai

Yasuhiro Yano

Herve Bonneville

Sophie Pautonnier-Perrot

Eric Lavillonniere

Stefan Mollov

Jeffrey Ewanchuk

Damien Castelain

Akira Okubo

David Mottier

Tatsuya Okuda

Marian Rudolf

Nicolas Degrenne

Tomoyuki Kawakami

Nadine Chapalain

Gustavo Buiatti

Guilherme Bueno Mariani

Andreja Rojko

Anantaram Varatharajan

Gianmario Pellegrino

Hervé Bonneville

Akita Okubo

Eric M Lavillonniere

The present disclosure relates to a method for estimating parameters of a junction of a power semi-conductor element comprising: •—Detecting at least one stable on-line operating condition through measurements () of Von, Ion, Tc on a semi-conductor module () where Ion is a current for which the on-state voltage Von of the semi-conductor is sensitive to the temperature and Tc is the temperature of the casing of said semi-conductor element; •—Measuring and storing at least one parameter set Von, Ion, Tc of said at least one stable operating condition; •—in a calculating unit (), providing calculations for minimizing the error between a junction temperature estimation Tj of an electrical model Tj=F(Von, Ion, θelec) comprising a first set of unknown parameters θelec and another junction temperature estimation Tjmod of a loss/thermal model Tj=G(Ion, Tc, θ mod) comprising a second set of unknown parameters θ mod and obtaining at least one set of parameters θelec and at least one parameter θ mod providing minimization of said error; •—providing the calculated value of Tj with at least one of the calculated parameters sets θelec and/or θ mod and the measured Von, Ion, Tc; •—Storing the at least one parameters set θelec and/or θ mod and/or Tj.

Method for estimating parameters of a junction of a power semi-conductor element and power unit

The present invention concerns a method and a device for determining a position of a rotor of a three-phase motor using a FOC system. The invention: —determines, by a proportional-integral controller, a first control voltage vector at a first instant, —transforms the first control voltage vector using an inverse Park transform, —sums the transformed first control voltage vector to a regular polygonal voltage pattern applied during a given duration, —performs a PWM from the sum of the transformed first control voltage vector and the regular polygonal voltage pattern, —controls the motor with the pulse-width modulation, —measures the current at each phase of the motor, —estimates the position of the rotor from the measured currents and from the regular polygonal voltage pattern, —determines, at a second instant, a second control voltage vector from the measured currents and from the estimated position.

Method and device for determining a position of a rotor of a three-phase motor

The present invention concerns a node of an HVDC grid composed of HVDC nodes and of a plurality of links interconnecting the HVDC nodes, each HVDC node being interconnected to at least one HVDC node of the HVDC grid by a link composed of conductive cables for high voltage direct current transportation and one optical fiber, at least one HVDC node being interconnected to at least two HVDC nodes, each HVDC node comprising, for each link connecting the HVDC node to the at least one other HVDC node, a link module comprising a fault sensing device, a breaker, and an optical transceiver for communicating through the optical fiber of the link.

Method for fault protection in HVDC grid, HVDC node of HVDC grid, and HVDC grid system

The present invention concerns a method for controlling the operation of a multi-die power module composed of at least two dies connected in parallel. The method comprises the steps of: &#x2014;obtaining the current flowing in the multi-die power module, &#x2014;obtaining a loss profile that is related to the dies of the multi-die power module, &#x2014;estimating from the measured current flowing in the multi-die power module, the losses of one die when no die is passivated, when the die is passivated, and when at least one other die is passivated, &#x2014;determining if and which die has to be passivated from the estimated losses and from the loss profile&#x2014;passivating the die which has to be passivated if a die has to be passivated.

Method and device for controlling the operation of multi-die power module

The present invention concerns a system comprising a multi-die power module composed of dies and a controller receiving plural consecutive input patterns for activating the dies of the multi-die power module. The dies are grouped into plural clusters of dies and the controller comprises means for outputting one gate to source signals for each cluster of dies, each outputted gate to source signal being different from the other gate to source signals and at least one first outputted gate to source signal reducing the activation of dies during at least one input pattern among the plural input patterns.

System comprising multi-die power module, method for controlling operation of multi-die power module, device for controlling operation of multi-die power module

The present invention concerns a method and system for reducing the electric power consumption of a railway system comprising at least one catenary, trains and at least one substation connected to sections of catenary and providing electric power to the catenary, wherein during the braking of the trains, the braking trains provide electric power to the catenary. The substation is associated to one device for reducing the electric power consumption and the invention:

System and method for reducing the electric power consumption of railway system

The present invention concerns a method and a device for controlling the voltage of a catenary supplying electric power to rolling stocks. A first rolling stock: &#x2014;detects a traction command or a regeneration command of a second rolling stock in the neighborhood of first rolling stock, &#x2014;increases the electric power supplied by the first rolling stock to the motor drive of the first rolling stock when a regeneration command of the second rolling stock is detected, &#x2014;decreases the electric power supplied by the first rolling stock to the motor drive of the first rolling stock when a traction command of the second rolling stock is detected.

Method and device for controlling voltage of catenary supplying electric power to rolling stocks

The present invention concerns a system comprising a multi-die power module composed of dies and a controller receiving input patterns for activating the dies of the multi-die power module. The controller comprises means for generating from the input patterns gate to source signals to apply to the dies and for each die, the gate to source voltage is shifted according to a given voltage value.

System comprising a multi-die power module, and method for controlling the switching of a multi-die power module

The present invention concerns a method and a device for controlling the voltage of a catenary supplying electric power to rolling stocks. The first rolling stock: &#x2014;detects a traction command or a regeneration command of a second rolling stock in the neighborhood of first rolling stock, &#x2014;increases the electric power supplied by the first rolling stock to means for heating, ventilation and air conditioning when a regeneration command of the second rolling stock is detected, &#x2014;decreases the electric power supplied by the first rolling stock to the means for heating, ventilation and air conditioning when a traction command of the second rolling stock is detected.

The present invention concerns a method for reducing the drive delay of a rolling stock to reach a destination, the rolling stock being driven by a driver to follow a running profile that defines the speeds and positions of the rolling stock at different timings. The method comprises the steps of: &#x2014;determining a current timing, &#x2014;getting a nominal acceleration of the rolling stock, the nominal acceleration being determined by the driver of the rolling stock to follow the running profile at the current timing, &#x2014;determining the speed error of the rolling stock with the rolling profile, &#x2014;determining the position error of the rolling stock with the rolling profile, &#x2014;determining an estimate of the time to reach the destination, &#x2014;determining a marginal acceleration from the speed error, the position error and the estimated time to reach the destination, &#x2014;accelerating the rolling stock with the sum of nominal and determined marginal accelerations.

Method and device for reducing drive delay of rolling stock to reach destination

A method and apparatus for controlling the output voltage of a boost converter including a number n of bridge devices connected in series, each bridge device including plural switches and a capacitor. The method and apparatus provide control of the switches according to a selected periodical matrix pattern including a number N of time intervals, N being a positive integer greater than 2, and in that in each time interval, the voltage between the input and the output of each ith bridge device with i from one to n, is equal to one of a null value, a number ki times a positive value, and minus the number ki times the positive value, the positive value being the result of the division of the output voltage of the boost converter including the n bridge devices by the number of time intervals N of the periodical matrix pattern.

Method and an apparatus for controlling the output voltage of a boost converter composed of plural bridge devices

The present invention concerns a method for controlling an output voltage of a boost converter composed of n bridge devices connected in series, each bridge device being composed of plural switches and a capacitor, the switches being controlled by periodical patterns decomposed in time intervals. In each time interval of a first and at least one second periodical patterns, the voltage between the input and the output of each ith bridge device with i from one to n, is equal to a null value, or an integer number ktimes a first and at least on second positive value, or minus the number ktimes the first and at least one second positive value, and in each time interval of at least one third periodical pattern, the voltage between the input and the output of each ith bridge device with i from one to n, being equal to a null value, or an integer number ptimes and at least one third positive value, or minus the number ptimes the at least one third positive value, at least one number kbeing different from the number p.

Method and an apparatus for controlling the output voltage of a boost converter

A method and associated device for enabling a mobile terminal to be detected by a first base station of a wireless cellular telecommunication network. The method receives from the mobile terminal a message comprising information representative of the location of the mobile terminal in the geographical area of the first base station, and transfers a predetermined signal if the location of the mobile terminal is comprised in a geographical area of the first base station, the predetermined signal being representative of a request to the first base station to start to transfer signals in the cell of the first base station.

Method and a device for enabling a mobile terminal to be detected by at least one base station

The present invention concerns a method for updating a monitoring list of information identifying cells transferred by a base station of a wireless telecommunication network in a cell managed by the base station, the monitoring list comprising information identifying cells which are neighbor of the cell managed by the base station. The base station:

Method for updating a monitoring list of information identifying cells transferred by a base station of a wireless telecommunication network in a cell managed by the base station

The present invention concerns a method for determining in a wireless cellular telecommunication network which device among a first device managing data associated to mobile terminals located in a first pool of cells and a second device managing data associated to mobile terminals located in a second pool of cells has to manage data associated to a mobile terminal. The first and second pools of cells have common cells and the mobile terminal is located in the first pool of cells. The first device managing data associated to the mobile terminal:

Method and apparatus for determining, in a wireless cellular telecommunication network, which device among a first and second devices has to manage data associated to a mobile terminal

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Rennes, France

Nicolas Voyer