Control Equipment for electromagnet stirring

Electromagnet Stirring equipment in Low Frequency Power System, which gather the international converter technique successful experience, it use the newest digital circuit chip to create SPWM wave, and it has a feed back system of close-loop gain control. It has a highly stability in output wave form, which drifting range in output current ≤3％

Low Frequency Power use AC direct AC frequency conversion technology. Some part of Rectification have set a high capacity capacitance to make up in factor of waveform and power, and the factor of power can reach at 0.9

The parts of control realize the digital control, and it can give high precision in output parameter which has highly stability and reliability. It also use digital monitor in output current , with three phase unbalance, over current, over voltage, under voltage and other nine kinds of detection.

Inverter driving part adopts 1BM intelligent power module, which has high switching frequency, small switching loss and low working temperature (slightly higher than the ambient temperature of about 10 degrees). The power module has four kinds of protection functions, and its working stability and reliability are better than that of 1GBT, GTR and other devices.

The highest modulation frequency in pulse width of Three-phase sine wave can be set at 2500Hz, with high carrier frequency, the high harmonic ratio of output current is small, the waveform is ideal and smooth sine wave. Ensure the stirring effect, prolong the stirring life.

With the detection device of the body's leakage current, leakage current is greater than 4A it will alarm, leakage current is greater than 8A automatic it will automatic stop. Ensuring the work of the body is under control and protecting the safety of the body and the inverter power cabinet. Low frequency power output capacity can adjust range, current adjust in 0~1000A, frequency adjust in 0.5~25Hz, which can meet the requirements of different kinds of steel stirring strength.

The circuit board adopts the metal box installation, shielding interference, dust and moisture proof, quick change board. The panel has a fault display array indicator light for easy monitoring and maintenance.