What is the purpose and function of an inverter? The commonly used inverter in our daily life is a solar inverter. This article is a summary of the functions and usage methods of solar inverters.
1.What is a solar inverter and what does it do?
Simply put, a solar inverter is an electronic device that converts low voltage (12, 24, or 48 volts) direct current into (110, 120, or 220 volts) alternating current. We are in a "mobile" era, with mobile office, mobile communication, mobile leisure, and entertainment. In a mobile state, people not only need low-voltage direct current supplied by batteries, but also the indispensable AC power in our daily environment. Solar inverter can meet this demand.
The solar inverter of Xindun Power can meet the power consumption of both DC load and AC load.
2. According to the output waveform, what are the types of solar inverters?
There are mainly two types, one is pure sine wave solar inverters, and the other is square wave solar inverters. The pure sine wave solar inverter outputs the same or even better sine wave AC power as the power grid we use daily, because it does not contain electromagnetic pollution in the power grid. The output of the square wave solar inverter is poor quality square wave AC power, and its maximum positive value to maximum negative value are almost generated simultaneously, which causes severe unstable effects on the load and the inverter itself. At the same time, its load capacity is poor, only 40-60% of the rated load, and cannot carry inductive loads. Pure sine wave solar inverters provide high-quality AC power, capable of driving any type of load, but with high technical requirements and costs.
However, as a professional manufacturer of pure sine wave solar inverters with over 16 years of experience, Xindun Power can maintain the best technology and quality of solar inverters at low manufacturing costs, and provide customers with highly competitive pure sine wave solar inverters.
3.What is "inductive load" in solar power inverters?
Simply put, it refers to high-power electrical appliances made using the principle of electromagnetic induction, such as electric motors, compressors, etc. This type of electrical appliance requires a much higher starting current (approximately 3-7 times the required current to maintain normal operation) during startup. For example, a refrigerator that consumes about 150 watts of electricity during normal operation can have a starting power of over 1000 watts. In addition, due to the inductive load generating 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 that the solar power inverter can withstand, which can easily cause instantaneous overload of the solar power inverter and affect its service life. Therefore, this type of electrical appliance has high requirements for power supply.
The solar power inverter of Xindun Power can withstand these inductive loads and provide stable and safe electricity for electrical appliances.
4. What is the efficiency of a solar power inverter?
The solar power inverter itself also consumes a portion of power during operation, so its input power is greater than its output power. The efficiency of a solar power inverter is the ratio of input power to output power of the inverter. If a solar power inverter inputs 100 watts of direct current and outputs 90 watts of alternating current, its efficiency is 90%.
The efficiency of most solar power inverters in China is below 90%, and the solar power inverter efficiency of Xindun Power can exceed 95%, and the price is controlled within a reasonable range.
5. What is continuous output power? What is peak output power?
Some electrical appliances that use electric motors, such as refrigerators, washing machines, drills, etc., require a large amount of current to be pushed at the moment of startup. Once successfully started, only a small amount of current is needed to maintain their normal operation. Therefore, for solar inverters, there are concepts of continuous output power and peak output power. Continuous output power is the rated output power; The general peak output power is twice the rated output power. It must be emphasized that some electrical appliances, such as air conditioners and refrigerators, have a starting current equivalent to 3-7 times the normal working current. Therefore, only solar inverters that can meet the peak power of electrical startup can operate normally.
The solar inverter of Xindun Power can withstand a peak power of 3-7 times, which can meet the needs of electrical appliances with electric motors.
6. Can an onboard inverter be used when the car engine is turned off?
Sure. When using low-power appliances below 350 watts, a typical car battery can provide 30-60 minutes of power with the engine turned off. If only a laptop with a power consumption of 50-60 watts is used, the usage time will be much longer.
The pure sine wave inverter of Xindun Power is equipped with undervoltage warning and undervoltage protection circuits. When the voltage drops to 10 volts due to long-term use of the battery, the undervoltage protection circuit starts, the output voltage is cut off, and an alarm is given to prevent accidents where the battery cannot start the engine due to low voltage. Therefore, users can confidently use the inverter with the engine turned off.
7. What are the dangers of using solar inverters?
The wire from the battery to the input end of the solar inverter carries a very large amount of current. If the copper wire heats up or even catches fire due to poor quality, too thin wire, or excessive load of the wire, it will lead to a serious accident. Therefore, during the use of the solar inverter, it is necessary to strictly follow the regulations for operation.
8. How to equip the battery with a suitable solar power inverter?
If the battery is 12 volts and 50 ampere hours, we multiply 12 volts by 50 ampere hours to obtain an output power of 600 watts. If the efficiency of the solar power inverter is 90%, then we multiply 90% by 600 watts to obtain 540 watts. This means that your battery can drive a solar power inverter with a maximum output power of 540 watts. In addition, there is an important principle when determining the power of the solar power inverter, which is to avoid long-term full load operation when using the solar power inverter, as it will greatly shorten the lifespan of the solar power inverter and significantly increase the fault rate of the solar power inverter. We recommend that users use solar power inverters at a maximum of 85% of rated power.
9. What should be noted when using solar inverters?
Firstly, it is necessary to strictly follow the regulations in the user manual to use the solar inverter; When not in use, it is best to cut off its input power supply; Do not place the solar inverter in direct sunlight or near the outlet of the heater; The working environment temperature of the solar inverter should not exceed 40 degrees; When the solar inverter is working, it will generate heat, so do not place objects near or on it; Do not expose the solar inverter to water.
10. How to select a solar power inverter?
Solar power inverter is a power supply product that operates in high current and high frequency environments, with a high potential failure rate. Therefore, consumers must be cautious when making purchases. Firstly, choose from the output waveform of the solar power inverter, preferably a pure sine wave; Secondly, the solar power inverter should have complete circuit protection functions; Thirdly, manufacturers should have a good commitment to after-sales service; Fourthly, the circuit and product undergo a period of testing and testing.
11. Working principle of solar inverter
His working principle is similar to that of a switching power supply, but of course, you can also imagine it as a transformer device. According to science, his working principle is to control the output of the oscillation signal through a oscillation chip or a specific circuit, and then this signal is amplified to drive the MOS transistor to continuously switch on and off. After DC input, through the switching action of the MOS transistor, a certain AC characteristic is formed, which is corrected by the correction circuit, You can obtain pure sine wave AC power similar to that on the power grid, and then send it into a transformer. The transformer changes the voltage before outputting, which is then sent to the voltage stabilizing circuit for protection, and finally to the load for use.
Xindun Power has been dedicated to the research and design of solar inverters for over 16 years. Whether it is related to inverter technology or market development, you can contact us for professional assistance!
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