Electronic device for the connection of two or more loads to the alternating electrical network and the executed connection procedure

摘要

Electronic device for the connection of two or more loads to the alternating electrical network and the executed connection procedure, allowing for the supply of such loads keeping under control inrush current value, as well as supplying the nominal current value during steady state. The device and its procedure comprise a clear solution especially designed for simultaneous charge of significant amount of electronic devices, whose charge is carried out by switching-type DC chargers. This situation is feasible for both single-phase networks of 110 VAC or 220 VAC nominal.

主权项

1. An electronic device for connection of two or more loads to an alternating current electrical network, the electronic device comprising:
an electrical network connection main switch connected to a transient filter; a control unit powered with current filtered by the transient filter; and a plurality of solid state relays (SSR), each SSR of the plurality of SSRs individually controlled by the control unit, each SSR of the plurality of SSRs connected to a respective load, wherein the control unit activates and deactivates different SSRs according to time, this activation is carried out individually following a sequence or in groups, and also being in accordance with the result of verification of, at least one external predefined condition, wherein the control unit includes a circuit that detects alternate network voltage values, wherein the circuit that detects voltage value comprises:
a full wave rectifier of network alternating voltage;a RC filter of rectified voltage;a comparison module with reference voltage being external reference or including a Zener diode;a galvanic isolation opto-coupler;a RC filter with continuous voltage, located after the opto-coupler; andan amplifier with hysteresis.