2. The AC power obtained is then boosted by the coil? This is a square wave AC?
3. Rectify the alternating current to get a sinusoidal wave
AC-DC is relatively simple, we know that the diode has a unidirectional conductivity, you can use the diode's characteristics of this bridge, so that one end is always inflow, the other end is always out of the DC voltage sinusoidal changes. If you need a smooth DC also need to rectify, the simple way is to connect a capacitor.
An Inverter is a DC to AC transformer. Inverter is a DC to AC transformer, which is actually a voltage inversion process with Adapter, which converts the AC voltage from the utility grid to a stable 12V DC output, while Inverter is a voltage inverter that converts the AC voltage from the Adapter to a stable 12V DC output. The Inverter transforms the 12V DC voltage output from the Adapter into a high-frequency, high-voltage alternating current (AC). Both parts also use the pulse width modulation,
?PWM? technology that is currently used more often. The core part is a PWM integrated controller, the Adapter is UC3842, nverter is used TL5001 chip. TL5001 working voltage range of 3.6?40V?, its internal with an error amplifier,? a regulator, oscillator, PWM generator with deadband control, low voltage protection circuit and short circuit protection circuit.
Inverters can be categorized by output waveform, power, and engineering structure.
From the waveform: a type of square wave inverter, another type of sine wave inverter.
The power can be divided into two categories: high power and low power. Less than 5000W can be called small power, more than 5000W is called high power inverter.
In the inverter project, it can be divided into high-frequency and low-frequency two kinds.
Whether it is sine wave, square wave, high power, low power, industrial frequency, high frequency, their work is basically the same. That is, a variety of means to transform an input voltage into another voltage output. Generally speaking, the DC power into AC power can be called inverter, inverse, is relative to the switching power supply, because the switching power supply is the alternating current into DC power equipment.
1, square wave inverter Square wave inverter output AC voltage waveform is a square wave. Such inverters are not exactly the same inverter line? But *** with the same features is a relatively simple line? Cheap? The disadvantage is that the square wave voltage contains a large number of high harmonics? In the load of electrical appliances with core inductors or transformers will produce additional losses? On the television and other equipment will produce interference. If the load is too large? The third harmonic component in the square wave output voltage will increase the capacitive current flowing in the load? Serious damage to the load's power supply filter capacitors. This can lead to equipment paralysis.
2. Corrected sine wave The AC voltage waveform of the corrected sine wave output is a step wave. Inverter to realize the step wave output has a variety of different lines? The number of steps in the output waveform varies greatly. The advantage of the modified sine wave inverter is that the output waveform is significantly better than the square wave and the high harmonic content is reduced. However, there is still some high-frequency interference to radios and some communication equipment? Some corrected sine wave inverter with inductive load capacity is also very poor.
3. Sine wave inverter Sine wave inverter output AC voltage waveform is a sine wave. The advantage of sine wave is that the output waveform is good? Low distortion? Low interference and low noise to communication equipment such as radio? Harmonic content is very small? ≤4%? Better than the general quality of the power grid? So? As long as the load capacity within the allowable range? The device can carry any load.
In today's electronics, high frequency inverters are the mainstay. For devices with power less than 3000W, quasi-sinusoidal waveforms generally dominate the market. But some high-precision equipment drive voltage requirements are very high, so in the 3000W below, the sine wave inverter is also relatively a bit of the market, because the market is small, so the price of sine wave inverter than quasi-sine several times higher, in fact, the production cost is not much higher than quasi-sine. For general home appliances, such as motors, fans, drills, TVs, computers, fluorescent tubes, light bulbs, etc. with a quasi-sine can be fully capable of, which is the main reason why the quasi-sine wave in the small power can become the mainstream.
For large work rate inverter, 5000W or more, generally used for backup power and wind power, solar power generation. High-power inverter power supply market, mainly distributed in foreign countries, the amount of domestic use is still very small. In the high-power solar power, wind power generation, grid-connected system is indispensable, so a complete inverter power generation system must be: power generation equipment, charging control equipment, power storage equipment, inverters, grid-connected system.