Electric brake system with magnetic loss

H - Electricity – 02 – P

Patent

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Details

H02P 3/18 (2006.01)

Patent

CA 2743042

The invention relates to an electric brake system for an electromechanical machine (M) connected to the output terminals of an inverter (3), the input terminals of which are supplied by a DC voltage source (1), the system comprising an electrical circuit connected between the input terminals of the inverter and comprising, connected in series: means for dissipating the electrical energy returned by the electromechanical machine to the input terminals of the inverter during a braking phase of the electromechanical machine; switching means (T) intended to close said electrical circuit during a braking phase of the electromechanical machine and to open said electrical circuit in the absence of a braking phase of the electromechanical machine. The electrical energy dissipation means comprise an inductor (Lf) wound around a magnetic circuit (4).

L'invention concerne un système de frein électrique pour une machine électromécanique (M) branchée aux bornes de sortie d'un onduleur (3) dont les bornes d'entrées sont alimentées par une source de tension continue (1), le système comprenant un circuit électrique branché entre les bornes d'entrée de l'onduleur et comprenant, connectés en série : - des moyens de dissipation d'une énergie électrique renvoyée par la machine électromécanique aux bornes d'entrée de l'onduleur lors d'une phase de freinage de la machine électromécanique, - des moyens de commutation (T) destinés à fermer ledit circuit électrique lors d'une phase de freinage de la machine électromécanique et à ouvrir ledit circuit électrique en l'absence d'une phase de freinage de la machine électromécanique. Les moyens de dissipation d'une énergie électrique comprennent une inductance (Lf) bobinée autour d'un circuit magnétique (4).

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