Valeo Systemes Thermiques

Valeo Climatisation

Xavier Goumain

Friedbald Kiel

Xavier Rousseil

Jonathan Fournier

Jean Gatinois

Philippe Bourdel

Sylvain Grandyot

Karen Chauvin

The invention relates to a module for controlling the power supply () of an electric motor which comprises a printed circuit board () bored with a plurality of through-holes (), respectively associated with an electrical connection pad () supported by said plate adjacent to each of said through-holes. The electrical connection pads () are arranged on a surface () of the printed circuit board () so that a virtual circle can be defined passing substantially through each of the connection pads, said pads being concentrated on a portion of the printed circuit board so as to form an arc of circle which is shorter than half the circumference of said virtual circle.

Module for controlling the power supply of an electric motor

A method of control of an electric motor involves generation of an electrical control signal for the electric motor, the signal having a series of sequences of pulses, each pulse being defined by a width and a period. The ratio of width to period defines a mean electrical power provided to the electric motor by this pulse. The period of a pulse situated at an arbitrary position of a sequence of pulses is equal to the period of the pulse situated at that position of any other sequence of pulses of the series, and the period of each pulse is fixed in a pseudo random manner, such that the inverse of the fixed period lies above the audible acoustic spectrum. The number of pulses of each sequence is fixed so that the inverse of the sum of the periods of all the pulses lies below the audible acoustic spectrum.

Spectral spread for electric motor

The invention relates to a device for controlling the electrical power supply of a circuit for a vehicle, said vehicle comprising: an electrical battery (); an electrical energy storage element (C), one terminal of which is connected to the first terminal (VBAT) of the battery and the other terminal of which is connected to an electrical earth; a first circuit (), capable of consuming electricity coming from the electrical battery (), and having first and second terminals respectively connected to the first and second terminals (&#x2212;VBAT, VBAT) of the battery (); and electrical supply management means (QI) configured to allow or prevent the passage of electrical current between said electrical energy storage element (C) and said first circuit (). Said control device comprises detection means () configured to detect a drop in voltage of the battery () below a threshold value, and command means () configured, in the event of detection of a drop in voltage of the battery below said threshold value, to command said electrical supply management means (Q) in order to prevent the passage of electrical current between the electrical energy storage element (C) and said first circuit ().

Device for controlling the electrical power supply of a circuit for a vehicle, comprising a battery and corresponding assembly

An electrical filter () is suitable for having a greater effectiveness for reducing the common mode current that an electrical device () can produce in the direction of a voltage source () which is used to supply this device. Such a filter can be useful for meeting the electromagnetic compatibility requirements set by the BMW Group Standard GS 95002-2 'Electromagnetic Compatibility (EMC)&#x2014;requirements and tests on components up to 60 V nominal voltage'.

Electrical filter, electrical equipment which is provided with such a filter and a vehicle which is equipped with such equipment

The invention relates to a power supply system of an electric motor () comprising a power circuit (), the input terminals of which are connected to a DC voltage source, and an electronic circuit () for controlling the electric motor () based on a control signal representative of the set speed of the motor. According to the invention, the system comprises a means () capable of reducing the DC voltage value received by the power circuit () during the starting of the electric motor () and/or during operating phases in which the set speed of the electric motor () is below a threshold speed.

Power supply of an electric motor

The invention relates to a system for controlling the speed of a motor () of an electric fan unit comprising a field-effect transistor () that controls the motor () using pulse-width modulation, the field-effect transistor () being connected to a circuit () comprising a voltage source () and a resistive element () in series, the circuit () is connected between the gate (G) of the field-effect transistor () and a second source (S) that is connected to a first source (S) of the field-effect transistor (), via an inductor () in order to allow a reduction in the slope of the current as the field-effect transistor () switches.

Growing community of inventors

Le Mesnil Saint Denis, France

Xavier Goumain