Abstract: It addresses to a process and device capable of mitigating electric arc faults in electrical panels as quickly as a few milliseconds. The technology uses power thyristors that, after detecting the arc, make the electrical connection of the panel's input bus to ground potential in a controlled manner, diverting the arc currents to this preferred path and forcing their extinction. The proposed suppressor device has improved features, as it includes a “snubber” that forms with the current limiting impedance with inductive reactive component a resonant circuit of Resistance, Inductance (L) and Capacitance (RLC). The “snubber” is capable of mitigating adverse consequences of the RLC circuit voltage transient due to the thyristor shutdown, protecting the same against voltage rises and spurious triggers and limiting the voltage on the panel bus to values below those capable of sustaining the arc fault.

Abstract: The invention addresses to a system and method that allow controlling the individual power flow of each battery, being indicated for energy accumulator systems of the electrochemical-battery type, solidly connected to the electrical grid, respecting each of its characteristics during operation. Thus, if the batteries present different states of charge, the system will be responsible for draining from each battery only the amount of energy that can be used. For different states of health, charge and life, the performance and discharge capacity are preserved. For degraded batteries, the system allows their replacement without the need of replacing the entire bank, including batteries with different technologies.

Abstract: The present patent application relates to a method and equipment for eliminating harmonics based on two complementary techniques, namely the elimination of harmonics by selective harmonic elimination pulse-width modulation in conjunction with the multiple-wiring transformer. The association of these two resources is capable of reducing the harmonic distortion of currents to extremely low values, providing a truly unitary power factor. The technology is suitable for low and medium intensity alternating current—direct current and direct current—alternating current converters, which make interface with the electricity network and should have low harmonic distortion of the current because of the high power value involved, and also because of fragility of the electricity network (low power of short circuit at the coupling point).