Centralized control device for controlling the application of voltage to a load provided with a power factor correction capacitor
First Claim
1. A centralized control device for controlling the voltage supplied to a load including a plurality of lamps provided with power factor correction capacitors, the control device being suitable for lighting engineering applications comprising:
- two input terminals for connection to a power supply network providing an alternating voltage,two output terminals for connection to the load,a power portion including a converter which has two bidirectional switches connected between the input terminals and the load, a first one of said bi-directional switches being connected in series with a supply input terminal for connecting the load to the supply network and the second one of said bi-directional switches being connected in parallel with the load,controlling and regulating means for managing the activation and deactivation states of said bidirectional switches,sensing means to which said controlling and regulating means are connected for measuring a voltage applied to the load, the supply network current and the supply network voltage,said controlling and regulating means automatically selecting the most correct operating procedure from among a plurality of operating procedures for different loads as a function of said voltage and current measurements.
2 Assignments
0 Petitions
Accused Products
Abstract
A centralized device for supply voltage control of a load with power factor correction condensers for lighting engineering applications has an array converter for obtaining a portion of power, with a plurality of switches located between the network sinusoidal supply and the load. The centralized device has controlling and regulating means for managing both the activation and deactivation states of the switches of the array converter so as to avoid sudden voltage changes across the load and provide for control of the load voltage.
-
Citations
19 Claims
-
1. A centralized control device for controlling the voltage supplied to a load including a plurality of lamps provided with power factor correction capacitors, the control device being suitable for lighting engineering applications comprising:
-
two input terminals for connection to a power supply network providing an alternating voltage, two output terminals for connection to the load, a power portion including a converter which has two bidirectional switches connected between the input terminals and the load, a first one of said bi-directional switches being connected in series with a supply input terminal for connecting the load to the supply network and the second one of said bi-directional switches being connected in parallel with the load, controlling and regulating means for managing the activation and deactivation states of said bidirectional switches, sensing means to which said controlling and regulating means are connected for measuring a voltage applied to the load, the supply network current and the supply network voltage, said controlling and regulating means automatically selecting the most correct operating procedure from among a plurality of operating procedures for different loads as a function of said voltage and current measurements. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
-
-
13. A method for controlling the voltage supplied to a load including a plurality of lamps provided with power factor correction capacitors by controlling a converter which has a first bi-directional switch for connecting the load to a supply network providing an alternating supply voltage, and a second bi-directional switch connected in parallel with the load, said method comprising:
-
measuring the voltage applied to the load, the supply network current and the supply network voltage, automatically selecting an operating procedure from among a plurality of operating procedures adapted for different loads, as a function of said current and voltage measurements, and controlling activation and deactivation of the first and second switches according to the selected operating procedure. - View Dependent Claims (14, 15, 16, 17, 18, 19)
-
Specification