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The efficiency conversion of pure sine wave inverter

how to choose the suitable inverter by analyzing the key information "Efficiency conversion" of the inverter.
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The efficiency conversion of pure sine wave inverter

When you are choosing an inverter for your solar system or RV system, many people often dont know how to choose it becuase that have many brands of inverters on the market.

So today we are going to tell you how to choose the suitable inverter by analyzing the key information "Efficiency conversion" of the inverter.

The efficiency of an inverter indicates how much DC power is converted to AC power. Some of the power can be lost as heat, and also some stand-by power is consumed for keeping the inverter in powered mode.

The general efficiency formula is  ηinv=Pac/Pdc;

where Pac is AC power output in watts and Pdc is DC power input in watts.

High quality sine wave inverters are rated at 90-95% efficiency. Lower quality modified sine wave inverters are less efficient 75-85%. High frequency inverters are usually more efficient than low-frequency.

Inverter efficiency depends on inverter load.The specific influence curve can refer to the figure 11.8 at below:

pure sine wave efficiency

The behavior in Figure 11.8 partially results from the fact that stand-by losses for an inverter are the same for all output power levels, so the efficiency at lower outputs is affected more.

There are three types of efficiency ranking used for inverters. You may come across those numbers as you research different models and manufacturers. Those three types are:

Peak efficiency (shown by arrow in Figure 11.8) indicates the performance of the inverter at the optimal power output. It shows the maximum point for a particular inverter and can be used as a criterion of its quality.

European efficiency is the weighted number taking into account how often the inverter will operate at differen+t power outputs. It is sometimes more useful than peak efficiency as it shows how the inverter performs at different output levels during a solar day.

California Energy Commission (CEC) efficiency is also a weighed efficiency, similar to the European efficiency, but it uses different assumptions on weighing factors.

The main difference between the European and CEC efficiencies is that the assumptions about the importance of each power levels for a particular inverter are based on the data for Central Europe in the former case, and California in the latter.

BRIDNA take seriously to improve the efficiency conversion of our pure sine wave inverter to help customer load more kind devices, the efficiency conversion of our pure sine wave inverter is over 92%, Our inverters can load microwave ovens with corresponding power, it is better than  ordinary inverters on the market in the performance of load capacitive devices and RCT mix devices, Such as water pump ,charger adapter,electric drill,ovens...etc