Schneider Toshiba Inverter Europe Sas

Hocine Boulharts

Mehdi Messaoudi

Arnaud Videt

Philippe Baudesson

Rudolf Fehringer

Allan Pierre Barauna

Heu Vang

Philippe Loizelet

Yves-Laurent Allaert

Rodolphe Sepulchre

Michel Arpilliere

An electronic determination device for determining at least one characteristic parameter of a connection set connected between a converter and an electric machine; the converter comprising at least two output terminals and, for each output terminal, a switching branch including at least one converter switch; the connection set comprising a filter connected to the output terminals and a cable connected between the filter and the electric machine; the filter including, for each output terminal, a respective electromagnetic coil connected to said output terminal and a respective capacitor connected to said coil; the determination device comprising:

Electronic device and method for determining at least one characteristic parameter of a connection set connected between a converter and an electric machine, related power supply chain and computer program

The invention relates to a method for controlling a converter connected to an electric machine by a cable (Cx) via a filter (F), said method consisting in determining at least one sequence of a plurality of voltage pulses forming a square wave signal to be applied to each conductor so as to minimize an overvoltage level, said sequence comprising a number 2N of successive pulses, N being greater than or equal to 1, each pulse being defined by a distinct rank n, said sequence being generated such that each increasing voltage pulse of rank n exhibits a pulse width that is identical to that of a decreasing voltage pulse of rank equal to 2N+1&#x2212;n, and the method includes the following steps in particular:

Method of controlling a converter connected to an electric machine

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 synchronizing first voltage edges with second voltage edges in order to minimize the common-mode currents generated by the installation.

Method and system for controlling an electric motor control installation

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.

Method and system for controlling a control installation of an electric motor

The invention relates to a control device () 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 (T) connected via its source to the second input terminal (B) and a second transistor (T) 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 (T), the control device comprising a control assembly connected to the gate (G) of the second transistor (T) and to the second input terminal (B) and comprising a capacitor (Ca) and a first Zener diode (Dz) connected in series to said capacitor (Ca) and a second Zener diode (Dz) connected between the gate (G) and the source (S) of the second transistor (T).

Control device to control a DC/DC converter in a switched electrical power supply system while limiting a capacitance thereof

The invention relates to a control device intended to be employed in a switched electrical power supply system, said system being able in particular to be employed in a variable speed drive to power its electronics. The control device comprises a first transistor intended to receive control signals originating from a control unit and a second transistor connected in series with the first transistor and provided with a floating-control gate.

Control device employed in a switched electrical power supply system

The invention relates to a method of control implemented in a variable speed drive, said method comprising the following steps of:

Control method implemented in a variable speed drive

A power converter including: a first controlled current source configured to control current flowing on a DC supply bus of the converter, a switch connected to a second current source and to a third current source and to each of input phases of the converter, a first controller configured to control the first current source to impose a current on the DC supply bus, and a second controller synchronized with the first controller and configured to control the second current source and the third current source to impose a current on one of the input phases selected with aid of the switch.

AC/DC power converter with improved power factor and improved THDi

A control method implemented in a power converter, such as a variable speed drive, is disclosed. This control method is designed to make the power converter operate when the latter is connected to the network in single-phase mode. The power converter includes a controlled current source connected in series to its DC power supply bus. This controlled current source includes an electronic converter provided with two controlled switching arms. The switching arms are controlled by alternating a modulation phase with a saturation phase, the saturation phase being applied for a determined duration &#x3b2; in order to make the power converter operate in discontinuous mode.

Power converter with a controlled current source and connected in single-phase mode

The invention relates to a speed controller comprising:

Device for protecting a speed controller against overcurrent

A device controlling a JFET power electronic switch of normally ON type, including a main gate control circuit powered by a main power source for driving the gate of the JFET switch, a protection switching device that is switchable between two states, an auxiliary circuit controlling the switching device, and an auxiliary power source whose positive terminal is connected to the source of the JFET switch and whose negative terminal is connected to the gate of the JFET switch, bypassing the gate control circuit in one of the two positions of the switching device. The switching device can be an electromagnetic or electronic switch.

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Triel-sur-Seine, France

Hocine Boulharts