摘要:
A power supply apparatus for providing electrical power to a power consuming device or a power conversion device from at least one of a first AC power source and a second AC power source. The power supply apparatus comprises controllable rectifier devices associated with each of the first and second AC power sources. The controllable rectifier devices are controllable to simultaneously rectify and control the power provided by the first and second AC power sources.
摘要:
It is described a rectifier stage (129,229) for rectifying an input AC voltage to a DC voltage, the rectifier comprising: a first input terminal (105,205) and a second input terminal (107,207) between which the input AC voltage is applied; a first thyristor (109,209); a second thyristor (111,211) connected in series with the first thyristor, wherein the first input terminal is connected between the first thyristor and the second thyristor; a first diode (115,215); a second diode (117,217) connected in series with the first diode, wherein the second input terminal is connected between the first diode and the second diode; and a first output terminal (119,219) and a second output terminal (121,221) between which the DC voltage is achieved, wherein the first thyristor and the first diode are connected to the first output terminal and the second thyristor and the second diode are at least indirectly connected to the second output terminal. Further a converter and a converter assembly are described.
摘要:
A single-phase voltage source AC/DC converter according to the present invention generates a second axis voltage command from difference between a DC voltage detection value at a DC terminal and a DC voltage command value and controls a DC voltage by increasing and decreasing active power with the second axis voltage command. For example, the voltage at the DC terminal is increased by decreasing active power when the DC voltage detection value at the DC terminal is lower than the DC voltage command, while the DC voltage detection value at the DC terminal is decreased by increasing the active power when the DC voltage detection value at the DC terminal is higher than the DC voltage command.
摘要:
Dispositif de déclenchement numérique d'un convertisseur électronique à commutation par le réseau, caractérisé en ce qu'il comporte des moyens de mesure des valeurs instantanées (V0,V1,V2) des phases du réseau d'alimentation du convertisseur, des moyens (17) d'élaboration d'une image de la tension continue (Ud) désirée à la sortie du pont, d'établissement de diverses combinaisons possibles des tensions de phase du réseau, de comparison desdits combinaisons à ladite image de la tension continue désirée (Ud) et des moyens (19) d'application au convertisseur (2) de la combinaison la plus favorable en vue de provoquer sa commutation sur cette combinaison.
摘要:
A method of measuring the d.c. level in the output of an a.c.-to-d.c. power converter provides the accurate measurement result with a minimal time lag for the measurement and without the need of changing the operating parameters depending on each ripple frequency by the averaging process for the ripple component included in the d.c. output over certain periods of the input power frequency.
摘要:
L'invention concerne un convertisseur AC/DC, comportant : un pont en H (H1) ; une inductance (LI) en série avec une entrée du pont ; une inductance (LO) en série avec une sortie du pont ; et un circuit (501) adapté à commander le pont alternativement dans une première configuration dans laquelle des première (S1, S3) et deuxième (S2, S4) diagonales du pont sont respectivement passante et bloquée, et dans une deuxième configuration complémentaire, le circuit (501) étant adapté, lors d'une phase de transition entre les première et deuxième configurations, à : fermer un premier interrupteur (S2) de la deuxième diagonale ; ouvrir un premier interrupteur (S1) de la première diagonale lorsque le courant traversant cet interrupteur s'annule ; fermer le deuxième interrupteur (S4) de la deuxième diagonale ; et ouvrir le deuxième interrupteur (S3) de la première diagonale lorsque le courant traversant cet interrupteur s'annule.
摘要:
A power converter that converts an AC power outputted from a generator into a DC power and supplies it to a battery (load). The power converter includes a thyristor (switch unit) connected between an output unit of the generator and the battery (load); and a gate control unit (control unit) for generating a triangle wave voltage having a constant peak voltage corresponding to each cycle of the AC power outputted from the generator, generating a differential voltage between the voltage supplied to the load via the switch unit and a predetermined target voltage, and controlling the conductive state of the switch unit based on the triangle wave voltage and the differential voltage.