Cheap Practical 2kw 3kw 4kw 5kw 12V 24V 36V 48V 60V 72V DC to 220V AC Pure Sine Wave Solar Inverter with LCD Display

Product Description

Cheap Practical 2kw 3kw 4kw 5kw 12V 24V 36V 48V 60V 72V DC to 220V AC Pure Sine Wave Solar Inverter with LCD Display

 

Specification

Product Parameters

Detailed Photos

Application

Inverter load notes (for reference only)

Resistive load:

Refers to a pure resistive load that works through a resistor-like component. That is, when there is no phase difference between the load current and the load voltage compared to the power supply, the load is resistive, such as an ordinary incandescent lamp (filament), which always attracts a constant power (watt) from the power supply, that is, a 100-watt light will always attract about 100 watts of power from the power supply. Resistive load is the easiest appliance to operate with an inverter.

Represents ordinary household appliances such as incandescent lamps, induction cookers, fans, computers, microwave ovens, etc.)

For example: a nominal 2000W induction cooker can be driven by a 2000W inverter!

Inductive load:

Inductive load refers to high-power electrical products made using the principle of electromagnetic induction, such as motors, compressors, relays, etc. These products require a much larger starting current (about 3-7 times) than the current required to maintain normal operation when starting.

For example, a refrigerator that consumes about 150 watts of power when operating normally can have a starting power of more than 1000 watts. In addition, since the inductive load will generate a back electromotive force voltage at the moment of connecting or disconnecting the power supply, the peak value of this voltage is much greater than the voltage value that the inverter can withstand, which can easily cause the inverter to be overloaded instantly.

Representative electrical appliances include: refrigerators, washing machines, air conditioners, water pumps, electric tools and other motor-type appliances

Capacitive load

Generally refers to a load with capacitance parameters, that is, a load that conforms to the voltage lag current characteristic. The corresponding power factor is a negative value, and the corresponding power factor of the inductive load is a positive value.

Representative loads include: switching power supplies, energy-saving lamps, electric vehicle charging power supplies, etc.

 

The main differences between sine wave inverters and modified wave inverters are reflected in the following aspects:

1. **Waveform quality**:
- Sine wave inverters generate pure sine wave AC, which is consistent with the waveform of grid power supply, with high output waveform quality and low harmonic content.
- The waveform generated by modified wave inverters is between square wave and sine wave. The waveform is adjusted to reduce the harmonic content, but it still contains more harmonics and is not as smooth as sine wave inverters.

2. **Efficiency and cost**:
- Modified wave inverters usually have higher conversion efficiency, but may generate higher heat under certain loads, and the cost is relatively low.
- Sine wave inverters are usually more expensive than modified wave inverters due to their complex control circuits.

3. **Application scope**:
- Sine wave inverters are suitable for occasions that require high-quality electric energy, such as household appliances and precision equipment.
- Modified wave inverters are suitable for occasions where the requirements for power quality are not particularly high, such as general use and cost-sensitive applications.

4. **Load adaptability**:
- Sine wave inverters have strong load adaptability and can meet all AC load applications.
- Modified wave inverters have poor load adaptability and are only suitable for some application areas that do not require high power quality, such as some household appliances, lighting equipment, etc.

5. **Impact on equipment**:
- Sine wave inverters can provide high-quality AC power for sensitive equipment and are suitable for laboratory equipment, medical equipment, etc.
- Modified wave inverters may interfere with some electrical equipment due to certain harmonic components in the output waveform, especially in the operation of precision equipment, which will cause high-frequency interference to communication equipment.

6. **Technical complexity**:
- The construction and operation of sine wave inverters are much more complicated than square wave and modified square wave inverters.
- The structure of modified wave inverters is much simpler than that of pure sine wave inverters, but more complicated than that of pure square wave inverters.

In summary, sine wave inverters and modified sine wave inverters each have their own advantages and limitations.

The choice of which inverter to use depends on the specific application requirements, budget, and power quality requirements.

 

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