Abstract:
The present invention concerns a drive system and a method of driving a vehicle (1). The drive system comprises a combustion engine (2) with an output shaft (2a) which is connected to a first component (10) of a planetary gear, a gear box (3) with an input shaft (3a) which is connected to a second component (12) of the planetary gear and an electric machine is connected to a third component (11) of the planetary gear. The drive system comprises an electric circuit (21) with a resistor (22) and an electric switch (23) with which the electric machine (9) is connectable to the electric circuit (21) and the resistor (22) during at least a starting process of the vehicle (1).
Abstract:
Dispositif de gestion de la puissance électrique en freinage (1) comportant un bus continu (10), ledit bus continu comportant un pôle de connexion (12) à une machine électrique (21) de traction d'un véhicule, la machine étant associée à un onduleur (20), l'onduleur délivrant, en mode freinage, sur le bus continu, une puissance électrique de freinage, un pôle de connexion (13) à une batterie (30) de stockage d'énergie électrique, une branche de dissipation (1D) connectée en un point de connexion (11) au bus continu, ladite branche comportant un interrupteur électronique de dissipation (1D1) connecté en série avec une résistance de dissipation (1D2), un capteur de courant (15) sur le bus continu, disposé entre le point de connexion (11) du bus continu et le pôle de connexion (13) à une batterie, et un contrôleur (18). Le dispositif comporte encore, entre le point de connexion de la branche de dissipation (1D) au bus continu (10) et le pôle de connexion à une batterie du bus continu, un interrupteur électronique de charge (1C1) contrôlant la circulation du courant sur le bus continu depuis le pôle de connexion à une machine électrique vers le pôle de connexion à une batterie. Le contrôleur calcule la puissance que peut absorber la charge de la batterie (30), la puissance que peut dissiper la résistance de dissipation (1D2) et la puissance envoyée sur le bus continu (10) et, lorsque la puissance envoyée sur le bus continu (10) est supérieure au total des puissances que peuvent absorber la charge de la batterie (30) et la dissipation dans la résistance de dissipation (1D2), le contrôleur (18) ouvre l'interrupteur électronique de charge (1C1).
Abstract:
A bicycle trainer includes a resistance unit engageable with the driven wheel of the bicycle, and a control console mounted to the bicycle in a user accessible location. The resistance unit is in the form of an AC alternator which generates power in response to rotation of the bicycle wheel, to power the various components of the bicycle trainer, including the control console and a resistance adjustment arrangement. In one form, the resistance is adjusted in accordance with inputs provided either from an operator or from a computer interconnected with the control console, by selectively connecting a resistor in a circuit including the AC alternator so as to provide resistance to rotation of the rotor of the AC alternator, and thereby resistance to rotation of the bicycle wheel.
Abstract:
A system and method are provided for improved dynamic braking in AC motors with an electronic drive, and more particularly to using a current regulation circuit to control the current supplied to the motor to be in phase with the internal EMF voltage of the motor such that the braking torque of the current is maximized per ampere of dynamic braking current when needed to stop the motor in case of a control failure or emergency. A current regulator produces a voltage command to the motor based on the current command input. The motor is still controlled by a d-q current regulator and the q-axis (torque axis) voltage is dnven to zero while the d-axis (non-torque axis) is left in current control with a zero current command. This way the motor internal voltage drive current in the terminals of the motor but the current is in phase with the internal voltage of the motor.
Abstract:
A power generating system includes a torque converter system receiving a rotational motion having a first torque from a source and producing a rotational output having a second torque different from the first torque, a transfer system having a first portion coupled to the rotational output of the torque converter system and a second portion magnetically coupled to the first portion, and a generator system coupled to the transfer system to produce and electrical output.
Abstract:
An induction motor (35) is used as a power source for driving a control rod. A plurality of switches (40,40) are provided for connecting and disconnecting the power supply to the induction motor. The switches are controlled separately through different command signal paths by a controller (42).
Abstract:
An electromagnetic braking device in which without controlling the increase or decrease of the number of electromagnetic coils (22) to be driven, the current control of the electromagnetic coils are performed including the temperature of a rotor (23) in a controlled system and thereby, environmental influence due to heat and deformation of the rotor are suppressed to the utmost. The device comprises the plural electromagnetic coils (22) provided on the stationary part side of a power feeding means, the rotor (23) consisting of conductors provided on the rotating shaft side of the power feeding means, switching means (24) connected to the electromagnetic coils, and a control means (15) for outputting switching data to the switching means on the basis of external control data. Further, the device is constituted so that the control means controls the ON/OFF ratios of the currents flowing through the electromagnetic coils via the switching means.