Why can t a square wave inverter carry an inductive load?

Because with an inductive load.

There is a risk of damage to the inverter.

A square wave inverter is a device that generates square waves. A square wave is a non-sinusoidal waveform that usually occurs when processing with electrons and signals. The ideal square wave has only two values, "high" and "low".

An inductive load is a load with an inductance parameter. To be precise, it should be a phase difference that will cause the load current to lag behind the voltage.

load characteristics.

An inductor is an energy storage element. When energized, the inductor converts electrical energy into magnetic energy. The moment the power supply is disconnected, the current drops rapidly, the magnetic field loses energy, and the magnetic field drops rapidly.

According to the laws of electromagnetism, when the magnetic field changes, nearby conductors generate induced electromotive force.

Because the characteristics of the square wave are very close to the situation of continuous switching of the power supply, the moment the power supply is disconnected, the back electromotive force voltage will be generated, and the peak value of this voltage is far greater than the voltage value that the square wave inverter can bear, which can easily cause instantaneous overload and cause damage.

Appropriate measures are taken, such as increasing the back EMF vent diode.

After signal clamping, etc., the square wave inverter can still carry inductive loads.

It's not that it can't be carried, but because the inverter with inductive load is easy to damage the inverter, and the inductive load may generate spike pulse high voltage when working, (especially if the waveform is a square wave), which may cause an impact on the inverter. Therefore, the square wave inverter should not be equipped with inductive load. The sine wave inverter is better, but it can be left without as much as possible.

Summary. Dear, I'm glad to answer for you. Why can't an inverter with a pure sine wave be connected to an inductive load?

Answer: dear, the pure positive wave inverter can eat up the peak power of the inductive load electrical appliance instantaneously, while the correction wave inverter cannot, the power of the inductive load instantaneously starts is very large, for example, the power of the 100w refrigerator may be 1000w instantaneously, if you use the sine wave inverter 300 500w on it, if you choose to use the correction wave needs to use about 1000 2000w, and like air conditioners, induction cookers such a large power inductive load, It's not that the sine wave can't be brought at all. Therefore, the inverter of the sine wave can carry any load, but the square wave cannot.

I hope mine can help you.

Hello, I have kept you waiting for a long time, and I am consulting the answers to your questions, please be patient Dear, I am happy to answer for you. Why can't an inverter with a pure sine wave be connected to an inductive load? A:

The inverter of the pure positive wave can eat up the peak power of the instantaneous start of the electrical appliance with the inductive load, while the corrective wave inverter cannot, the power of the instantaneous start of the inductive load is very large, for example, the power of the 100W refrigerator may be 1000W, if you use the sine wave inverter 300 500W, if you choose to use the corrected wave, you need to use about 1000 2000W, and the inductive load with relatively large power such as air conditioner and induction cooker, It's not that the sine wave can't be brought at all. Therefore, the inverter renter of the sine wave can carry any load, but the square wave cannot. I hope mine can help you.

Specifically, can a non-pure sine wave inverter be used for an audio with a power transformer?

Kissable, non-sine wave inverters, suitable for resistive loads, such as electric heating appliances, incandescent lamps, etc. Non-sine waves should not be used for inductive loads, such as motors, transformers and other electrical appliances. An inverter is an electronic device that converts low-voltage (12 or 24 volts or 48 volts) direct current into 220 volts alternating current.

Because it is usually the 220 volt alternating current rectified into direct current to round the reputation of Zhengzen, and the role of the inverter is the opposite, hence the name. In an era of "mobile", mobile office, mobile communication, mobile leisure and entertainment. In the mobile state, not only low-voltage direct current supplied by batteries or batteries, but also 220 volt alternating current, which is indispensable in daily environments, is required, and the inverter can meet the demand. Thank you!

Inductive load Under normal circumstances, the load with inductance parameters, that is, the load that conforms to the characteristics of the voltage lead current, is called the inductive load. In layman's terms, it refers to high-power electrical products made by applying the principle of electromagnetic induction, such as motors, compressors, relays, fluorescent lamps and so on.

These products require a much larger (about 3-7 times) start-up current than is required to maintain normal operation. For example, a refrigerator that consumes about 150 watts of power during normal operation can have a starting power of more than 1,000 watts. In addition, because the inductive load will generate a back electromotive force voltage at the moment when the power is turned on or disconnected, the peak value of this voltage is far greater than the voltage value that the on-board AC power supply can bear, which can easily cause the instantaneous overload of the vehicle inverter and affect the service life of the inverter.

As a result, these appliances have a high demand for power supply waveforms.

- excerpted. SO: Probably not.

A pure sine wave inverter will do.

A few of the differences are quite big, several times. A 1000w square wave inverter is estimated to be 300 is enough, but for sine waves, the better ones are more than 2000. Non-sine wave inverters, such as square wave inverters, may have problems such as excessive current and large current harmonic content when connected to inductive loads (such as electric fans), and long-term operation of the load will cause faults such as heating and bearing damage.