Protection device for a voltage source and a load supplied by the voltage source

Description of the offer:

The system provides overvoltage protection, current limitation and overload protection in one combined design. The insertion loss is small (resistive losses of a MOSFET, metal–oxide–semiconductor field-effect transistor, turned on) and the number of parts, which eventually will determine the size of the circuit, is limited to around 30.

The protective device allows a better control of impedance and load within electricity distribution systems. It comprises a switching element interposed between the source and the load voltage. A current limiting circuit, which allows to measure the current supplied and to control the switching element, is also included. The circuit is designed for a DC system and therefore for continuous voltage and current, as provided for example by a battery, a solar array or any AC-rectified source of power.

The device can be integrated in a small hybrid or compact bloc. It does not require any auxiliary supply, i.e it is self supplied as soon as the DC line to be protected is applied.

Innovations and advantages:

This protective system is adaptable to any type of load:

• It operates independently of both voltage source and load impedance features
• It can be placed anywhere between the source and the load without affecting the functionality of the load rated
• Its size is lower than the size of current products
• Losses of intensity are limited, both in the voltage source and the load supplied by the voltage source

Domain of application:

The device can be used for electricity distribution systems where it is difficult to control bus impedance and load. Consequently, this invention can be used within a big variety of industries such as communication and transportation.

Currently, this technology is used in spacecraft, in particular within the International Space Station (ISS).

• Controllers
• Industrial equipment and machinery