Analysis of the Composition and Calculation Method of UPS Power Consumption

The power consumption of UPS is related to its own losses and load, where self losses are constant and an important indicator of UPS performance, while load losses are variable and depend on the power consumption of electrical equipment. The power consumption of UPS is the energy consumption of UPS itself, which is the energy consumption required without any load. In this context, reducing UPS losses and improving manageability have become important considerations in the cost dimension.
1, The wear and tear composition of UPS power supply
The power consumption of UPS depends on the brand and quality of the UPS you are using. Usually, a power consumption of 50% is considered low, and typical UPS systems claim to reach 80%. However, this is in an ideal laboratory environment, and we calculate it at 30% to ensure data loss. The best thing is that Emerson's UPS has a power consumption of 10%, which is his strength. Power consumption refers to the loss of power, which is the difference between the input power and output power of equipment, devices, etc., and the loss of power. In circuits, it usually refers to the heat energy dissipated on elements and devices. Sometimes it also refers to the power required by the entire machine or equipment.
1. No load loss
After UPS is powered on, some components remain in working condition, and their losses are essential even when the UPS is unloaded. In this part of the devices, the inductor has the highest loss, accounting for 42%, followed by the losses of IGBT&SCR drivers and SCR itself, which together account for about 26%. There are also some devices with relatively low losses, such as discharge resistors and capacitor internal resistance. Generally, it accounts for about 0.5% to 3% of the UPS * large fixed capacity.
2. Full load loss
Compared with the no-load loss, the IGBT&Diode loss has significantly increased, jumping from 6.6% in the above figure to 45.7%; The proportion of inductance loss has slightly decreased, but still accounts for 32.6%; The loss of SCR has slightly increased, from 12.4% to 14.4%. The proportion of other components such as fans, monitors, and control boards has decreased. IGBT, The losses of diodes, inductors, etc. are the main losses of UPS. To improve the efficiency of UPS, on the one hand, it is necessary to start by reducing the losses of these devices, and on the other hand, a more optimal topology structure can be chosen.
2, UPS Consumption Calculation Method
When the UPS is turned on without any load, the input current and input voltage are measured. The product of the measured voltage and current is the power factor of the UPS, which can be ignored as power=voltage X current X power factor. If there is a power meter for DC measurement, it will be more accurate.