| 摘要 |
<p>The power supply consists of two or more boosters (B1, B2, Bn), connected with their secondary circuit (2) in series on the phase (L) of the line to be regulated, each of them supplying a regulation voltage with a given value. Each booster is controlled by its own rapid switching system (9), by means of which each booster can be kept off or energized in order to provide the secondary circuit with the regulation voltage for which it was sized, and said switching systems are connected to an electronic process unit (5) controlling the output voltage (Vu) of the line (L), which preferably also detects the input characteristics of said line and which is pre-arranged so as to check whether the output voltage varies with respect to a preset nominal value, and to verify if the variation is below or above said value. Said unit is equipped with a phase-inverter (8) so that, if the line output voltage remains within the preset nominal value, the boosters are turned off, whereas, if the output voltage varies with respect to the nominal value, said process unit prearrange the phase-inverter to supply a voltage in phase or in counter-phase with respect to the output voltage, respectively in case an increase or a decrease regulation is required, and said process unit activates or deactivates the necessary boosters with a steps and substantially continuous regulation in order to bring back and keep the output voltage (Vu) as near as possible to the nominal value. The boosters used in the regulator are preferably characterized in that they show two primary circuits (1, 101), one of which is short-circuited or opened, while the other one is opened or connected to the output of said phase-inverter (8). <IMAGE></p> |
