What industrial inverters are and how they work

The inverter is an electronic device that converts direct current into alternating current, at a certain power rating of over 500 Watts.

Digimax’s inverter are of two types:

• - Pure wave: suitable for any type of load capable of reproducing a wave equal to that of the home network;
• - Modified wave: suitable for resistive and capacitive loads.

You can adjust its frequency, thus having inverter:

• - At costant frequency: the line voltage is rectified to direct current at a level compatible wih the internal battery;
• - At variable frequency: apparatus that drives an electric motor by varying the frequency of its power supply by adjusting the speed of three-phase motors.

The reasons for adjusting the frequency of an inverter are varied, including: saving energy thus improving the efficiency of the equipment and reducing noise levels.

To know how an inverter works, it is useful initially to understand how a transformer works: an electrical machine that converts mechanical energy into electrical energy in the form of alternating current induced in a wire coil in which the magnetic field is produced by another (primary) coil with alternating current flowing through it. Both coils have alternating current flowing through them producing a magnetic field. If alternating current is run through the primary coil and made to change direction quickly and continuously then it will be called an inverter.

Areas of application and features of industrial inverter

The use of the inverter is essential for powering devices that operate on alternating current. Areas of application are:

• - Photovoltaic system: also called hybrid inverter;
• - Accumulators;
• - Conditioners;
• - Automotive electric motors in which the inverter converts the stored energy to battery power.

There are three types to evaluate before choosing an inverter:

• - Power: that must be proportionate to the device in wich it will be placed;
• - Types of connection between inverter and decive;
• - Types of inverter: monophase (at costant frequency) or three-phase (at variable frequency).

Digimax photovoltaic inverter with solar MPPT function, can always achive the maximum available power under any condition and have power ratings from 450 to over 500 Watts.