Regardless of which brand of inverter is chosen, the internal configuration and detailed parameters of the machine must be given priority consideration. The main parameters of an inverter include output power, conversion efficiency, DC input voltage, output waveform, and protection function. In this way, if you have an understanding of these parameters, you can know the quality of this household inverter and also choose a suitable household inverter for your own home.
Inverters can be roughly divided into two types: sine wave and square waves. Some engineers also like to classify quasi sine waves into another category, which is pure sine waves, quasi sine waves, and square waves.
1. Pure sine wave is a popular product with better conversion efficiency and cost-effectiveness than sine wave. Its output waveform is stable, and it has high stability for household appliances such as televisions, computers, speakers, and motors below 6000W. It is a mainstream product in low-power low-frequency inverter power sources.
2. Quasi sine wave is also a popular product with low price and high cost-effectiveness, but its load applicability is worse than that of pure sine wave. For some precision appliances and instruments, its stability is poor.
3. Square wave which outputs a square wave, has poor load-carrying capacity and produces significant harmonic components for general inductive loads. Therefore, for electric motors and televisions, there will be considerable noise. This type of product was made using power frequency transformers in the early days and is already a popular product.
For buyers, how to confirm whether the inverter is suitable for their own use. Summarized the following points:
1. Determine load requirements:
Firstly, clarify the output power requirement of the inverter. The rated power of the inverter should be greater than or equal to the maximum power demand of the connected equipment, especially for devices with high starting energy requirements, such as motors, air conditioners, etc.
Considering the type of load, whether it is a purely resistive load or an inductive load, as well as the power factor of the load, can help to more accurately determine
Determine the capacity of the inverter.
2. Choose appropriate input voltage and current:
The input voltage of the inverter must match the DC voltage provided by the power supply. Common input voltages include 12V, 24V, etc.
Ensure that the input current range of the inverter matches the current provided by the power supply to avoid overload or underload issues.
3. Consider conversion efficiency and energy consumption:
The conversion efficiency of an inverter is the ratio of input power to output power. High efficiency inverters can reduce energy waste and lower
Operating costs.
Pay attention to the standby power consumption and load power consumption of the inverter. Choosing a low-energy inverter can help save energy.
4. Consider protecting functionality and security:
Choose inverters with good self-protection functions such as overcurrent, overvoltage, undervoltage, and short circuit to ensure the safe and stable operation of the equipment.
Pay attention to the insulation performance and protection level of the inverter, especially when used in humid or dusty environments.
5. Consider certification and compliance:
Ensure that the selected inverter has passed relevant certifications such as CE, UL, etc. to meet the standards and requirements of the target market.
Refer to the technical documentation and test reports of the inverter to ensure compliance with relevant safety standards and performance requirements.
6. Consider brand and service:
Choose well-known brands and inverter manufacturers with good after-sales service to ensure product quality and after-sales support.
Understand the manufacturer's warranty policy, repair support, and customer feedback in order to receive timely assistance when needed.
7. Consider size and installation:
Select the appropriate inverter size based on the installation space to ensure that the inverter can be easily installed in the designated location.
Consider the heat dissipation performance and installation method of the inverter to ensure its stable operation under various environmental conditions.
Different types of loads have different starting impulse currents. We need to select the appropriate inverter model according to theactual equipment power, current, and load characteristics.
Peak power: refers to the power required to turn on electrical appliances when you turn on the device. For example, televisions and drills may produce buzzing sounds, voltage jumps, and other phenomena at the moment of turning on, which are the impact phenomena of electrical appliances at the moment of turning on. Therefore, peak power is different from rated power. Generally speaking, resistive loads such as light bulbs do not have peak problems, but for inductive and capacitive appliances, there are usually 3 to 5 times the peak value. Therefore, when buying inverters, we need to pay attention because inverters are double the peak value. For example, televisions have a nominal rated power of 75W, but the peak value is 5 times, which peak value is 350W. So, if you use a 100W inverter, It can't be turned on because a 100W inverter has a peak of 200W, so we need to use a 300W inverter first, which has a peak of 600W. Of course, it can be turned on.
Electrical peak value: For light bulbs, there is no peak value. A 100W inverter can light up a 100W bulb. For televisions, there is a peak value of 3 to 5 times. For 75W televisions, a machine with a power of over 300W needs to be started. For drills, the peak value of 3 to 5 times. For computer monitors, it is usually more than 6 times. Therefore, starting a 300W machine is still a bit difficult. For laptops, it is usually 70W, and a 150W inverter can start because it is usually three times the peak value (210W peak value). For digital products such as mobile phone chargers and cameras, a 100W inverter is generally sufficient.
In summary, selecting a suitable inverter requires comprehensive consideration of factors such as load demand, input voltage and current, conversion efficiency and energy consumption, protection function and safety, certification and compliance, brand and service, as well as size and installation. By carefully evaluating and comparing different products, one can choose the inverter that best suits their needs.
