What is the difference between UPS
power supply sine wave and square wave of UPS power output of the two kinds of situations, one is the mains directly output, after a simple voltage regulator is another mains or battery (
After the inverter output.
In the backup type UPS uninterruptible power supply, the normal mode after voltage electric output waveform is sine wave, dc voltage and battery mode through the inverter output waveform is a square wave.
In on-line interactive UPS uninterruptible power supply, the normal mode after voltage electric output waveform is sine wave, the battery mode after inverter dc voltage output waveform is sine wave.
There's another, that is, on-line UPS uninterruptible power supply bypass when the output is a sine wave, the same mains normal mode after inverter is a sine wave output, battery mode after inverter dc voltage output of sine wave.
Sinusoidal waveforms and the grid or send waveform generator is the same, and even than a waveform from the grid can be used to perfect, but a sine wave modulation is not an easy thing.
As a result, the sine wave UPS generally only in the capacity of more than 5 kva units, or online type and some of the online interactive unit on.
The workers in the sine wave with the frequency transformer is the most efficient conversion, can load all equipment can be used on the grid.
But because the cost problem, at present also has many USES such as: correction sine wave and square wave correction sine wave, which is not a sine curve, but many small line segments, using artificial method will they get into similar to sine curve, is modified sine wave, modified sine wave is also called the modified wave, although compared with the square wave is good, but still not as good as sine wave.
Square wave is relatively simple, very simple push mian circuit can do it, but because from the highest point in the square wave form suddenly fell to the lowest to the highest, energy loss is great, and if the unit capacity is very big, such losses may cause damage to the machine itself, so generally square wave system, will not appear on a lot of units, and usually hundreds of ampere of small capacity and is a backup UPS uninterruptible power supply of the unit.
Sine wave conversion efficiency is highest, minimum loss, followed by correction is sine wave and square wave.
In the present growing world of emerging technology, the has demanding operation in various sectors like three phase voltage regulator
, stabiliser for ac, three phase voltage regulator and many other industries at stabiliser for ac levels of manufacturing and designing.
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