摘要:
The method of control according to the invention slaves a DC voltage (B + A) generated by the alternator to a predetermined setpoint value by controlling an excitation current (l D ) flowing in an excitation circuit (3, 6) comprising an excitation winding (6) of a rotor of the alternator. The excitation current (l D ) is controlled by means of a semiconductor switch (3) controlled by a control signal (V GS ) having a predetermined period. The method is of the type of those comprising a detection of a failure of the excitation circuit. In accordance with the invention, at least one short-circuit of the excitation winding is detected (Th_HEXCCD). According to another characteristic of the method, the control signal is generated on the basis of a combination (EXC_DR) of a setpoint signal (EXC) formed by pulses of the predetermined period exhibiting a duty ratio representative of the setpoint value and of a detection signal (Th_HEXCCD) indicative of the short-circuit.
摘要:
A communication method and device of a voltage regulator of a motor vehicle alternator on an onboard network, and corresponding voltage regulator and alternator. The communication method according to the invention, for a voltage regulator (36) of a motor vehicle alternator on an onboard network of the vehicle, consists of exchanging information frames on a serial bus (43) according to one or more different proprietary protocols compatible with a standardised protocol. According to the invention, the information frames are encoded or decoded depending on controls and statuses of a standard voltage regulator having predefined characteristics, and the method comprises steps of reading or writing the information frame fields depending on the predefined locations and lengths of same, converting the field values by means of a linear interpolation (39), and addressing the control and status registers (35) of the standard voltage regulator based on predefined parameters. Figure 5
摘要:
La présente invention propose un convertisseur de tension (1) comprenant un module de commande (2) adapté pour fournir un signal de contrôle (20) et un module de puissance (3) adapté pour recevoir le signal de contrôle (20) et piloter des phases d'un bobinage, un terminal d'alimentation (11) destiné à être connecté à une batterie du véhicule, le convertisseur de tension (1) comprenant également un moyen (4) adapté pour déterminer un courant d'alimentation (Idc) aux bornes du terminal d'alimentation (11) dudit convertisseur de tension, le module de commande (2) comprenant un module de calcul (5) adapté pour établir une consigne de courant (Idc*) en fonction d'une consigne de couple (Torque*), le module de commande (2) comprenant également un module de régulation stator (6) adapté pour générer le signal de contrôle (20) du module de puissance en fonction du courant d'alimentation (Idc) et de la consigne de courant (Idc*).
摘要:
The invention relates to a control loop (10) which is installed in a voltage regulator of a motor vehicle alternator and controls an output voltage of the latter by adjusting an excitation current of the alternator. The control loop includes, at the input, means for measuring (31) the output voltage by sampling, generating a measurement signal (U m ), error-calculation means (13) generating an error signal (e) equal to a difference between the measurement signal (U m ) and a set value (U o ), means for processing the error signal (e) including an amplifier (14) and generating a control signal (Y sat ) and, at the output, means (35) for generating a control signal (PWM) controlling excitation control means in accordance with the control signal (Y sat ). According to the invention, the processing means also include a phase-advance filter (24).
摘要:
The regulating loop for a digital regulator of an excitation rotating electric machine is suitable for operation as a generator delivering an output voltage tailored by an excitation current. The digital regulator comprises means of control of the excitation current and the regulating loop comprises, at input, a means of measurement by sampling the output voltage generating a measurement signal (U m ), means of error calculation (13) generating an error signal (e) equal to a difference between the measurement signal (U m ) and a setpoint (U0), means of processing (14, 15, 16, 17, 18, 20) of the error signal (e) generating a regulating signal (Y sat ) comprising in parallel a first amplifier (14), an integrator (15) and an anti-saturation system (23), and comprising, at output, means of generation of a control signal (PWM) controlling the means of control as a function of the regulating signal (Y sat ). In accordance with the invention, the anti-saturation system (23) is a conditional detection system (24).
摘要:
The invention relates to a voltage regulator for the alternator of an automobile, comprising electronic adjustment circuits (10) and means for generating a signal representative of an excitation current supplied to an excitation coil of the alternator. According to the invention, the regulator includes a programmable signal processing interface (11) that receives at the input at least one signal (SS; Sp, SGp, Sexc) representative of the excitation current and supplies at the output a processed signal (Srex) transmitted to an electronic control interface (3) of the vehicle. The interface (11) includes means (111) for applying different forms of processing to the representative signals (SS; Sp, SGp, Sexc) and means (MU130 to MU133) for selecting, based on a programming word (M) a form of processing to be applied to said signal. Typically, the representative signal is a PWM signal.
摘要:
La présente invention propose un convertisseur de tension (1) comprenant un module de commande (2) adapté pour fournir un signal de contrôle (20) et un module de puissance (3) adapté pour recevoir le signal de contrôle (20) et piloter des phases d'un bobinage, le module de puissance (3) comprenant au moins un bras de commutation (30) par phase de bobinage, chaque bras de commutation (30) comprenant au moins un moyen (4) adapté pour déterminer un courant de phase dans ledit bras de commutation (IpU, IpV, IpW), le convertisseur de tension (1) comprenant également un module sommateur (5) adapté pour établir une estimation du courant d'alimentation du convertisseur de tension (Idc,estimé) en fonction desdits courants de phase détectés (IpU, IpV, IpW), le module de commande (2) comprenant un module de calcul (21) adapté pour établir une consigne de courant (Idc*) en fonction d'une consigne de couple (Torque*), le module de commande (2) comprenant également un module de régulation stator (22) adapté pour réguler le signal de contrôle (20) en fonction du courant d'alimentation estimé (Idc,estimé) et de la consigne de courant (Idc*).