What is an Inverter Generator?

The inverter is a converter that converts DC electric energy (battery, storage battery) into constant frequency and constant voltage or frequency and voltage regulating alternating current (generally 220V, 50Hz sine wave). It consists of inverter bridge, control logic and filter circuit. Widely used in air conditioners, home theaters, electric grinding wheels, electric tools, sewing machines, DVDs, VCDs, computers, TVs, washing machines, range hoods, refrigerators, video recorders, massagers, fans, lighting, etc. Because of the high penetration rate of automobiles abroad, you can use the inverter to connect the battery to drive electrical appliances and various tools to work. The vehicle-mounted inverter output through the cigarette lighter is a power specification of 20W, 40W, 80W, 120W to 150W. Some larger power inverter power supply should be connected to the battery through the connection line. By connecting household appliances to the output of the power converter, various appliances can be used in the car. Applicable electrical appliances are: mobile phones, laptops, digital cameras, cameras, lighting, electric shavers, CD players, game consoles, handheld computers, power tools, car refrigerators and various tourism, camping, and medical emergency appliances Wait.

working principle

The inverter is a DC to AC transformer, and it is actually a voltage inversion process with the converter.

The sine wave inverter technology is introduced, the working principle of the typical inverter method in the development of the sine wave inverter, and the working process of the typical inverter circuit are explained. Contents include: the basic form of inverter main circuit, such as voltage type current type ... ^[1]

Design using high-frequency DC boost and sine wave inverter design. Design a 12V DC boost to 220V / 50Hz AC vehicle inverter. DC boost circuit and full-bridge inverter circuit are mainly formed by push-pull circuit. It is composed of AT89C52 single-chip microcomputer as the control circuit of the control chip. The main circuit structure of the DC boost circuit is a push-pull inverter circuit, which completes the conversion from 12V DC to 310V DC; the AT89C52 microcontroller is programmed according to the SPWM control technology to complete the sine wave output and protection functions of the full-bridge inverter circuit. control. The design circuit was simulated with MATLAB software, and the results show that the vehicle-mounted inverter has good operating characteristics. ^[2]

Inverter car

Vehicle-mounted inverters generally use car batteries or cigarette lighters to power, first convert low-voltage DC power to about 265V DC power, and then convert high-voltage DC power to 220V, 50Hz AC power. In-vehicle inverters break many of the limitations of using electrical appliances in cars. The vehicle power supply is not only suitable for vehicle systems, as long as it has a DC12V DC power supply. The vehicle inverter fully considers the external use environment, and will automatically shut down when overload or short circuit occurs. ^[2]

Use method of inverter vehicle inverter

1. Insert the car inverter into the cigarette lighter socket of the car. When inserting, please check the tightness between the plug and the socket. When it is too loose, open the spring clips on both sides of the plug part and insert it into the cigarette lighter socket.

2. Check if the power indicator of the vehicle inverter is on.

3. Insert the power plug of the electrical appliance to be used into the socket of the vehicle power converter.

Precautions:

1. When unplugging the electrical appliance in continuous use, make sure that the switch of the electrical appliance is turned "OFF" before unplugging the power plug.

2. When replacing the fuse of the vehicle-mounted inverter, be sure to use the fuse of the same model and specification. Using a fuse or wire other than the specified specification may cause abnormal overheating and fire.

3. Clean the dirt on the vehicle inverter plug in time, so as not to cause poor contact or abnormal overheating of the converter.

4. After use or when not using the car inverter, unplug the car inverter from the cigarette lighter socket and keep it properly. ^[2]

Selection of Inverter Vehicle Inverter

The vehicle-mounted inverter is a power supply product that works under high current and high frequency environment, and its potential failure rate is quite high. Therefore, consumers must be careful when buying:

First, choose from the inverter output waveform, it is best not to be lower than the quasi-sine wave;

Second, the inverter must have a complete circuit protection function;

Third, manufacturers must have good after-sales service commitments;

Fourth, the circuits and products have stood the test of time.

1. In addition to the price factor, the main consideration for the selection of vehicle power supply is the input voltage and output power of the vehicle power supply. In addition, because the power of various electrical appliances is very different, you must choose the vehicle power supply according to the requirements. It is enough for the main purpose.

2. According to the type of electrical appliances used, a suitable vehicle power supply needs to be selected. For everyday resistive electrical appliances, square wave, modified wave, and sine wave can be used together. For inductive electrical appliances, a sine wave inverter must be selected. Device.

3, square wave / modified wave inverter power supply can not carry inductive and capacitive loads, can not drive air conditioners, refrigerators, and it is difficult to provide power for high-quality audio and television. Strictly speaking, the square wave / corrected wave inverter power supply will affect the service life of the consumer. These problems will not occur when using a sine wave inverter.

4. The cigarette lighter insurance in general cars is 10A or 15A (10A insurance is mostly for old models or imported models), which shows that the vehicle-mounted inverter power supply that can be used in general cars is 120W or 180W . If you need a high-power inverter (more than 180W or 200W), be sure to check whether there is a battery clamp in the package. High-power inverters without a battery clamp will have restrictions on the use of cars.

5. The general car power supply will have insurance on the cigarette lighter side. The automobile supplies Qiqi network reminds that you must open it when checking to see if this insurance does not match the insurance of the car cigarette lighter. Insurance of the cigarette lighter), so that the cigarette lighter insurance can work, on the other hand, the insurance of the car cigarette lighter will burn out, which will cause unnecessary trouble. ^[2]

Inverter car inverter precautions

First, use the inverter strictly in accordance with the user manual;

Secondly, the inverter's output voltage is 220 volts AC, and this 220 volts is in a small space and is in a movable state, so be careful. It should be placed in a safer place to prevent electric shock. When not in use, it is best to cut off its input power;

Third, do not place the inverter near the direct sunlight or the heater outlet. The working environment temperature of the inverter should not exceed 40 degrees Celsius;

Fourth, the inverter will generate heat during operation, so do not place objects near or on top of it;

Fifth, the inverter is afraid of water. Do not expose it to rain or sprinkle water. ^[2]