-
Anonymous users2024-02-07The original intention of the modified sine wave is to fit the sine wave with the square wave, but the actual inverter is very bad, I have used an oscilloscope to measure the output waveform of the modified sine wave inverter, which is the following figure:
-
Anonymous users2024-02-06Difference between pure sine wave and modified sine wave inverter:
1. The modified sine wave inverter generally adopts a non-isolated coupling circuit, while the pure sine wave inverter adopts an isolated coupling circuit design. It's also a lot different. Modified sine wave switching inverter power supply, not only eliminates the cumbersome power frequency transformer, but also greatly improves the inverter efficiency by 90%.
2. The modified sine wave switching inverter power supply adopts PWM pulse width modulation to generate the corrected wave output, and in the inverter process, due to the use of special intelligent circuits and high-power MOSFETs, the power loss of the system is greatly reduced. And the soft start function is added, which effectively ensures the reliability of the inverter. If the requirements for power quality are not very high, and it can meet the needs of most electrical equipment, but it still has 20% harmonic distortion, there will be problems in the operation of precision equipment, and it will also cause high-frequency interference to communication equipment.
The modified sine wave is relative to the sine wave, and the output waveform of the mainstream inverter is now the corrected sine wave. There are two main types of waveforms of inverters, one is a sine wave inverter (i.e., a pure sine wave inverter) and the other is a square wave inverter. The sine wave inverter outputs the same or even better sine wave alternating current than the grid we use every day, because it is free of electromagnetic pollution in the grid.
-
Anonymous users2024-02-05Of course, the pure sine wave inverter is better, and the output voltage is purer and more stable than the grid 220V.
A sine wave inverter is a power electronic device that converts direct current (power battery, battery) into alternating current (generally 220V, 50Hz sine wave). The inverter is the opposite process to the ACDC converter. Since it is usually used with an ACDC converter or power adapter to rectify 220V AC into DC power, and the inverter does the opposite, hence the name.
Sine wave inverters are widely used in all kinds of microcomputer systems, communication systems, household, aviation, emergency, communications, industrial equipment, satellite communication equipment, military vehicles, medical ambulances, police cars, ships, solar and wind power generation fields and other places that need emergency backup power supply, which can constitute EPS emergency power supply system.
-
Anonymous users2024-02-04Myself, I use a pure sine wave inverter, which can be used by any household appliance like mains, but the modified sine wave is different from many electrical appliances that cannot be used.
The power frequency transformer turns the voltage of the battery into a modulation waveform of 20kHz similar to the battery voltage through the H bridge, and then connects to the power frequency transformer to boost the voltage, and will feedback the voltage from the transformer secondary to form a closed-loop voltage stabilization, and the transformer is secondary to LC filtering to get the sine wave output. >>>More
1.The power of the inverter must be greater than the rated power of the electrical appliances used, considering that some electrical appliances have a larger current when starting, the inverter with a larger output power should be selected 2The DC voltage of the inverter and the electric frequency voltage should match the battery on the street when the inverter works, the inverter has indicated the DC power supply (such as 12V, 24V, etc.), then the battery voltage you access must be consistent with it, the inverter voltage is DC12V, then your battery voltage must also correspond to 12V, otherwise the inverter will not work or be damaged 3 >>>More
1.Vehicle inverter is also called automotive power converter, because the market demand for vehicle inverter is large, and the manufacturing threshold is low, so there are many small manufacturers in the production of vehicle inverter, which leads to a variety of vehicle inverter brands and uneven quality. The well-known on-board inverter brands mainly include MIG, Belkin, Olashuer, etc. >>>More
1. In a right-angled triangle, the sine of a certain angle is the ratio of the opposite side of the angle to the hypotenuse. >>>More
The inverter is mainly used to convert the direct current in the battery into alternating current for the lighting in the substation after the power loss of the substation (that is, the substation Reed accident lighting). >>>More