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The modified sine wave inverter consists of key components such as the inverter bridge, control logic and filter circuit. It completes the inverter task by turning on and off the power semiconductor devices according to a specific rule, converting DC into AC. The output waveform of the modified sine wave inverter has been modified, which is significantly improved compared to the square wave, and the high-order harmonic content is also reduced.
Inverters can be divided into square wave inverters, modified wave inverters and sine wave inverters according to the output waveform. Among them, modified sine wave inverters refer to inverters with modified outputs similar to sine waves. Most common inverters on the market are modified sine wave inverters.
Compared with pure sine wave inverters, the advantages of modified sine wave inverters are lower prices and relatively simple internal structures. However, their disadvantages are higher output waveform distortion, lower efficiency, and the possibility of greater heat and energy loss.
In addition, the modified sine wave cannot carry inductive loads, but only resistive appliances, because the peak power of inductive appliances is large at the moment of startup and cannot be tolerated.
Modified sine wave inverters are currently widely used in user systems in remote areas because these users do not have high requirements for power quality. It is suitable for resistive electrical loads, such as resistance furnaces, incandescent lamps, etc. However, for applications that require high-quality power output, such as computers, medical equipment, etc., pure sine wave inverters should be selected.
In addition to choosing the right inverter type based on the application scenario, you also need to consider key parameters such as the inverter’s output power and conversion efficiency. In addition, factors such as the inverter’s input voltage, output voltage, price, and brand also need to be weighed comprehensively.
There are many inverter brands on the market, such as BELTTT’s BEL series modified sine wave inverter, BET series pure sine wave inverter, etc. When purchasing, you should pay attention to choosing regular brands and channels to ensure product quality and after-sales service.
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