Modified sine wave is relative to sine wave, the output waveform of mainstream inverter, which is the modified sine wave. There are two main types of inverter waveforms, one is a sine wave inverter (i.e. a pure sine wave inverter) and the other is a square wave inverter. The output of a sine wave inverter is the same or even better than the grid we use every day because it does not have the electromagnetic pollution found in the grid.
what is modified sine wave power inverter
The square wave inverter outputs a poor quality square wave AC, which is generated almost simultaneously from positive to negative, thus causing drastic instability to the load and the inverter itself. Also, its load capacity is poor, only 40-60% of the rated load, and cannot carry inductive loads. If the load carried is too large, the third harmonic component contained in the square wave current will increase the capacitive current flowing to the load, which will seriously damage the load's power supply filter capacitor.
In response to the above shortcomings, modified sine wave (or modified sine wave, quasi-sine wave, analog sine wave, etc.) inverters have appeared in recent years, and their output waveforms have a time interval from positive to negative, and the use effect is improved. Modified sine wave inverters generally use a non-isolated coupling circuit, while pure sine wave inverters are designed with an isolated coupling circuit. Their prices also vary greatly. Modified sine wave switching inverter power supply not only eliminates the bulky frequency transformer, but also makes the efficiency of inverter greatly improved by 90%.
Modified sine wave switching inverter power supply adopts PWM pulse width modulation technology to produce modified wave output. In the inverting process, the power loss of the system is greatly reduced due to the special intelligent circuit and high power field effect tube. And the soft start function is added to effectively ensure the reliability of the inverter. If the requirements for power quality are not very high, it can meet the needs of most power equipment, but there is still 20% harmonic distortion, which will cause problems when running precision equipment, and will also cause high frequency interference to communication equipment.
What are the benefits of a modified sine wave inverter
A modified sine wave inverter is a type of inverter that is designed to produce a more pure sine wave output than a standard square wave inverter. A pure sine wave is important for devices that require a precise waveform, such as appliances with motors or other electronics that require a consistent power supply. A modified sine wave inverter is also more efficient than a square wave inverter, and can run cooler, making it a better choice for some applications.
What are the drawbacks of a modified sine wave inverter
A modified sine wave inverter is a type of power inverter that produces an output signal that is close to a true sine wave. This type of inverter is popular because it is less expensive than a true sine wave inverter and it is more efficient than a square wave inverter. However, there are some drawbacks to using a modified sine wave inverter.
One of the main drawbacks of a modified sine wave inverter is that it can cause distortion in electronic equipment. This distortion can cause problems with equipment that is sensitive to voltage fluctuations, such as televisions and computers. Additionally, a modified sine wave inverter may not be suitable for some appliances, such as refrigerators and air conditioners.
Another drawback of a modified sine wave inverter is that it is not as reliable as a true sine wave inverter. In some cases, a modified sine wave inverter may not be able to power equipment properly, which can lead to damage. Additionally, a modified sine wave inverter may not be able to handle large loads, which can cause the inverter to overheat.
Overall, a modified sine wave inverter has some disadvantages compared to a true sine wave inverter. However, it is more affordable and efficient than a square wave inverter, making it a popular choice for many people.
The scope of application of the modified sine wave
The modified sine wave inverter is a great option for using in cell phones, laptop computers, TV sets, camcorders, CD players, various chargers, car refrigerators, game consoles, video CD players and power tools. Not only that, but it is also widely used as a backup power source in, for example, travel or field work, and can solve the problem of electricity consumption in remote power shortage areas. modified sine wave inverter can be used as a backup power supply for industrial and mining enterprises.
Notes on Modified Sine Waves
Modified sine wave inverter should avoid "inductive load". In general, it refers to the high-power electrical products manufactured by applying the principle of electromagnetic induction, such as motors, compressors, relays, fluorescent lamps, etc. These products require a much higher starting current (about 5-7 times) than the current required to maintain normal operation. For example, a refrigerator that consumes about 150 watts during normal operation can start up at 1000 watts or more. In addition, since inductive loads generate a counter-electromotive force voltage at the moment of power-on or power-off, the peak value of this voltage is much larger than the voltage value that the on-board inverter can withstand, which tends to cause transient overload of the on-board inverter and affects the service life of the inverter.