Online UPS

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Introduction :
Theory of Operation:

The main topology of the UPS Consists of bypass path, AC-DC Converter, DC-AC Inverter, Battery Charger, DC-DC Converter, Control Circuit and detection Circuit. Moreover, the intelligent Power Management Software is also Optional. The Function and efficiency are Superior to the traditional UPS.

The UPS Operation is Described as below :

When the Utility Power is applied into the UPS, it was divided into two ways after going through the breaker and EMI filter. One Way is Connected to AC-DC Converter Which Converts the Utility AC Power into a DC Voltage Which is Called DC-BUS Voltage When Divide into two path. One Path goes to Charger Which Converts the DC-BUS Voltage into a Proper DC Voltage to Charge the UPS Battery. The Other Path goes into DC_AC half bridge inverter. The other way works as a bypass path or inverter output. In general, the UPS Will internally do the self-diagnosis. If there is no problem, the bypass relay will choose the inverter output. This is So Called [ON-LINE mode]

In case the Utility Power fail, the AC-DC Converter and Charger will be off duty. The DC-DC Converter Works and Converts the battery voltage into DC-BUS Voltage. The DC-AC inverter Converts the DC -BUS Voltage into AC Voltage. This is So Called [ON-BATTERY mode].

The auxiliary Power circuit Supplies the designated Power to all the Control Circuits. Because the DC-AC inverter is always Working, the DC-DC Converter can Work rapidly and replace the AC-DC Converter while the Utility Power fails. Furthermore, the bypass relay Continuously Keeps in the Position of inverter output to Supply the Regulated Power for the load. There is no Power failure to Loading Equipment.
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