2000 watt power inverter How to choose inverter products?

 Car inverter is a work in high-current, high-frequency Solar power inverters‍ environment power products, the potential failure rate is very high. Therefore, consumers must be careful when buying. First, from the inverter output waveform selected, preferably not less than quasi-sine wave; secondly, to have a complete circuit of the inverter protective function; Third, manufacturers have a good after-sales service commitment; fourth, circuits and products have been tested over time. 

Inverter, inverter device must be composed of a thing to so called, the difference between him and the transformer directly, that is, he can achieve a DC input and output AC, working principle and switching power supplies the same, but the oscillation frequency in within a certain range, for example, if the frequency is 50HZ, output was AC 50HZ. The inverter frequency can be changed in the device. 

Transformers generally refers to a device-specific Car power inverters‍ frequency bands, such as frequency transformer, the transformer is that we usually see, they both inputs and outputs must be within a certain range, for example, can work within the 40-60HZ range.

2500 watt power inverter Daily use of the inverter

1. 220V power inverter on the car obtained is 220V 50HZ, the high point of the sine wave, square wave is generally cheaper for. 

With the kind of sine wave power outlet Inverter thermal design‍ and then, is the same, but in fact, the square wave can also be used, but if there are fans and other electrical equipment used, there will be some noise, the reason for using a square wave, because This modulation is relatively low cost. In general, this car inverter, 500 watts maximum power, but air conditioning is generally more than 700 watts, and that you really want on your home air conditioning loading? Car air-conditioning, including those coaches are allowing the engine to drive the compressor directly, not electricity, if the middle one more electricity conversion process, the loss is even greater. And not good equipment, might as well use the car air conditioning. 

2 pick notebook, TV, CD or something, just use the rated power under his, no problem but note that he is connected to the car battery, although he usually 11V power off automatically to protect avoid low voltage lead car does not start, but still not suitable in the case of the engine is not running with, so if the load is relatively large, it is recommended to start the engine. If it is no problem to charge the phone down. 

3. Electric car, there is a place called DC-DC module, he also called DC converters, this module input 48V, output 12V, then you just buy a car inverter 12V input can be used. vehicle power inverters‍ Of course, if you can buy a better 48V input inverter, it is estimated that difficult to buy Moreover, this module can only provide general 5A current, but up to 10A, but also with what the lights, so it is easy to overload, recommended, if you can, buy a DC converters, this converter dedicated to you that the inverter, and then only if the DC converter to provide 5A, then the inverter input should be less than 5A, otherwise it may damage the module Of course there are some current DC converter is great, if you do not repair the place, can go to some electrical repair shop or ask them to give you into a large current, or more DC converters can be connected in parallel, in short, Do not let him overload can be. 

4 In the current urban rail vehicles have a vvvf traction inverter, inverter transformer used in the train pulling high pressure (typically dc750V or DC1500V) into three-phase power supply frequency and voltage adjustable electric traction motivation to use the train during braking Solar power inverters‍ can drive traction inertia phase energy emitted by motor rotation is converted to direct current is fed back to the grid or consumed by the energy consumption of the module.

800 watt power inverter Inverters and inverter

The inverter is VFD / VVVF the Chinese translation. 

Inverter with integrated high voltage Solar power inverters‍ power transistor technology and electronic control technology, an independent transmission components. 

Effect is to change the frequency of the AC power frequency and amplitude of the motor, thereby changing the magnetic field of its movement cycle, to control the motor speed purposes. 

The inverter makes simplify complex speed control with inverter + AC squirrel cage induction motor combination can replace most of the original work done by a DC motor, reducing the volume and reduce the maintenance rate, so drive technology development to a new stage. 

Unlike the entry drive with said anti-inverter, inverter, commutator. Not only to DC power inverter to AC power inverter, more continuous need to first rectified AC power to DC power. 

Simply put, the inverter output is only part of the d Inverter thermal design‍ rive.

500 watt power inverter Inverter related terms

Inductive load layman's terms, that is, the application of electromagnetic induction principle of making high-power electrical products, such as motors, compressors, DC AC power inverters‍ relays, etc.. These products need when starting a ratio to maintain normal operation (about 5-7 times) required a much larger current starting current. For example, a refrigerator power consumption during normal operation of about 150 watts, its starting power up to 1000 watts or more. In addition, due to the inductive load in an instant power or disconnect the power supply, will produce back-EMF voltage, peak voltage of this inverter can withstand far greater than the voltage value, it is easy to cause instantaneous inverter overload affect the service life of the inverter. Thus, higher electrical power supply waveform such requirements. 

Quasi-sine wave is also divided into several quasi-sine wave, square wave from almost the same square wave to sine wave closer rounded trapezoidal wave. We discuss here only a square wave, waveform which is currently the most commercially available high-frequency inverter can provide. Such quasi-sine wave inverter can be used in notebook computers, televisions, modular stereos, camcorders, digital cameras, printers, various vehicle power inverters‍ chargers, PDAs, game consoles, DVD players, mobile DVD, home for treatment, etc. , the larger the inverter output power can also be used in small electric appliances such as hair dryer, electric cup, kitchen appliances and so on. But for inductive load class appliances such as refrigerators, electric drills, etc. are not prolonged use of quasi-sine wave inverter power supply. Otherwise, it may cause damage or shorten the life expectancy of the inverter and related electrical products. If you must use an inductive load, suggested the use of reserve power larger quasi-sine wave inverter, as the site offers large peak power inverter. Here, the focus here on quasi-sine wave inverter used in TV (traditional display class) examples. TV inverter has the following three requirements: First, the TV in the boot, degaussing circuit for electricity demand has great moments, so the peak power inverter demanding. For example, a 25-inch digital TV, the power consumption under normal operating conditions is about 80 watts, while the boot instantly power up to 1450 watts. Second, because the television field frequency equal to the frequency of the AC power, the AC inverter output frequency must be accurate. Third, the inverter should not interfere with the TV. Even if it can satisfy the above three conditions, the TV when using quasi-sine wave AC power, the screen will still have a few fixed interference pattern, the color will be slightly greenish (when using the old-fashioned TV, cast the situation is more serious), but the other is no different. 

Continuous output power, peak power output of some use electrical motors or tools, such as refrigerators, washing machines, drills, etc., in an instant startup requires a lot of current to drive, once started successfully, only a small current to maintain its normal operation. Therefore, the inverter, it will have the concept of continuous output power and peak power output. Continuous output power that is rated output power; generally peak output power of 2 times the rated output power. It must be emphasized, some appliances, such as air conditioners, refrigerators Solar power inverters‍ and other start-up current is equivalent to 3-7 times its normal operating current. Therefore, only to meet peak electrical power inverter starts to work properly.

300 watt power inverter power inverter

According to send power inverter, divided into vehicle power inverters‍ coal inverter, solar inverter, wind inverter, nuclear power inverter. Depending on the application, divided into independent control of the inverter and inverter. At present the domestic market inverter efficiency. As described above, when the inverter is working part itself also consumes power, so it is greater than the input power to its power output. That is, the efficiency of the inverter inverter output power to input power ratio. If a station 100 watt inverter input DC output of 90 watts of AC power, then it's efficiency is 90%. Currently the world's solar inverters, high efficiency in Europe and America, the European standard is 97.2%, but the price is more expensive, other domestic inverter efficiency is 90% or less, but the price is much cheaper than imports. Outside power, in addition to waveform Select the inverter efficiency is also very important, the higher the inverter to waste DC AC power inverters‍ less energy efficient electrical power for even more, especially when you use low-power system that more importance obvious.

1000 watt power inverter Role of the inverter

By the wave nature of the main points chord two categories, one is a sine wave inverter, and the other is a square wave inverter. Sine wave inverter output power is the same as Solar power inverters‍ we use every day or even better sine wave AC power because it does not exist in the electromagnetic pollution. The square wave output of the inverter is the poor quality of the square wave alternating current, the positive maximum to the negative maximum value to almost simultaneously generated, so resulting in a dramatic effect on the instability of the inverter and the load itself. At the same time, its load capacity is poor, only 40-60% of the rated load, not with inductive load (explained in detail below article). If the load carried by large, square-wave current third harmonic components contained enable capacitive currents flowing into the load increases, and in severe damage to the load of the power supply filter capacitor. For the above disadvantages, in recent years a quasi-sine wave (or modified sine wave, modified sine wave, sine-wave, etc.) of the inverter, the output waveform from the positive maximum to a negative maximum time between intervals, using the results improved, but is still quasi-sine wave by the broken line, belonging to the scope of the square wave, continuous bad. In conclusion, the sine wave inverter providing high-quality alternating current, can bring any kind of load, but the technical requirements and costs are high. Quasi-sine wave inverter can meet most of our electricity demand, high efficiency, low noise, moderate prices, and thus become the market mainstream products. vehicle power inverters‍ Square wave inverters produced using simple multivibrator, which belongs to the level of technology in the 1950s, will gradually withdraw from the market. 

1500watt power inverter Power Inverter Performance

* Power inverter can be flexibly set to AC main supply type and DC main supply type: 

A) AC main supply power inverter Solar power inverters‍ when there is electricity, in electricity output, the fault when the mains input automatically switches to inverter output; 

B) DC power inverter main supply when there is electricity, in the inverter output when the DC input automatically switches to mains failure output; 

* Power inverter designed, allowing cutting off the DC power in the state, automatically switches to mains bypass, does not affect the power of the load, easy to maintain and replace the battery; 

* Power inverter in the event of a battery voltage high / low, overload alarm output shutdown, the battery voltage returns to normal, the output power is automatically restored, eliminating the overload after 50 seconds, the power is automatically restored output, this feature is especially useful in unattended communication base stations; 

* AC power inverter supports boot functions, such as the output of a load, power inverter will not turn on; 

* Power inverter supports communication, solar controller‍ the use of real time power monitoring software work; 

* Power inverter provides two passive dry nodes, respectively, for DC input and AC output fault fault alarm;‍

2000 watt power inverter Power inverter maintenance Precautions

1) UPS should be noted that Car inverter knowledge the use of a well-ventilated environment, conducive to heat and keep the environment clean. 

2) Do with inductive loads, such as cash registers, fluorescent lights, air conditioning, etc., to avoid damage. 

3) UPS output load control in about 60% for the best, highest reliability. 

4) UPS load is too light (eg 1000VA, 100VA UPS with load) may cause deep discharge of the battery will reduce the battery life, should be avoided. 

5) appropriate discharge, helps cell activation, such as long-term non-stop electricity, every three months to be artificially broken mains load discharge time with UPS tape, so you can extend the battery life. 

6) For most small UPS, go to work and then open the UPS, to avoid load at boot time to start, should work to close UPS; For network room UPS, because the majority of Car power inverters‍ the network is 24 hours, so the UPS must run around the clock. 

7) UPS should be charged after discharge to prevent battery damage due to excessive self-discharge.‍

2500 watt power inverter Circuit diagram and working principle of the common car inverter products

Currently on the market, sales of the largest, the most common car inverter output power is 70W-150W, inverter circuit mainly uses TL494 or KA7500 chip-based pulse vehicle power inverters‍ width modulation circuit. 

The entire circuit-board inverter can be divided into two parts, each part of the adoption of a TL494 or KA7500 chips control circuit, including the role of the first part of the circuit is 12V DC car battery, etc. will be provided by high-frequency PWM (pulse width modulation) switching power supply technology to convert into a 30kHz-50kHz, AC 220V or so; the role of the second part of the circuit is the use of the bridge rectifier, filter, pulse-width modulation and switching power output and other technologies, the 30kHz ~ 50kHz, 220V alternating current into Solar power inverters‍ alternating current of about 50Hz, 220V in.

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2500 watt power inverter Three-phase inverter suitable installation guide

(1) If the cable is too small, it will cause a fire. Both the input lines and output lines, ground, or cell lines. Especially the ground wire diameter must be adequate, Car inverter knowledge‍ otherwise it will cause life-threatening. 

(2) Connection 

A. The output line directly into the output terminal block connections make this inverter can support greater loads. 

B. The input line directly into the input terminal block, that is, commercial electricity through an inverter input terminal block, and also through the terminal block output load. The advantage of this approach is to make the work 150% of the inverter rated power. 

(3) external battery connection: first recognize the battery positive and negative, will be connected to our professionals black negative battery cable, connect the solar inverters‍ positive red. 

Warning: Do not use too fine a line, otherwise it will cause inverter damage or even cause a fire!‍