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!‍

Color is also a factor selected 6000 watt power inverters

We all already know during the course of which the home improvement and tooling, using PPR pipe is a very good choice, so many people began to buy this Car power inverters, but at the time of purchase to take note of its color. Color can also be called the selection of standard products do? Course, is that other products may not care, but for PPR pipe products is sure to pay attention to the job.
Why do I say in choosing the right product PPR pipes time to pay attention to his color, because the color of this product is the use of some criminals, who then buy when in use can not be a corresponding effect, will be wasted a lot of unnecessary funds. PPR pipe after use, there will be specialized recycling people, their main purpose is to put these DC AC power inverters in production, then as a new product to sell. Some green, gray or other colors PPR pipe, there may be secondary in production, so in order to avoid buying such products, it is best not to select products with color. For this reason, PPR pipe white product might be better to avoid the manufacture of a secondary color is an important property, not easily ignored.

Kind of vehicle power

( Power converters , Power Inverter) is a way to convert the DC power DC12V and AC220V AC mains the same , for general electrical use , is a convenient vehicle power converters. Car power inverter in foreign markets was generally welcomed. Abroad due to the higher prevalence of motor vehicles , work or travel to a battery driven electrical connector and a solar controllers variety of tools to work with inverters . After China entered the WTO, the domestic market, more and more private transport , therefore , as a DC car power inverter for use on the move to AC converter , will bring a lot of convenience to your life, is a standing automotive vehicle loaded with supplies. By car cigarette lighter output inverter can be 20W, 40W, 80W, 120W 150W power until the specification. Then a large number of power inverter to be received via cable on the battery. The appliances connected to the output of the power converter can be used in a variety of appliances like the car as easy to use at home . Can be used in appliances include: cell phones, laptop computers, digital cameras, cameras, lighting, electric shavers , CD players , game consoles , PDAs , printers , power tools, car refrigerator and a variety of travel , camping , medical aid appliances. Power is the power part of the electronic device , is a highly versatile electronic products. It has been widely used in various industries and daily life, its quality greatly affects the reliability of electronic devices , with a load capacity level and the strength of its conversion efficiency is directly related to its scope of application . Square wave inverter is a low-cost , extremely simple conversion method , which applies to all kinds of rectifier load , but for the adaptation of the transformer load is not very good , there is a large noise.

Power Inverter buy points

How to choose the correct ups power inverter mainly pay attention to the following points .
1 , the rated output voltage: within a predetermined fluctuation range of the input DC voltage is allowed , it means that the rated voltage of the inverter should be output . The stability of rated output voltage accuracy is generally defined as follows : In steady-state operation , the voltage fluctuation range should be a limit , such as the deviation does not exceed the rating of ± 3% or ± 5%. Under load mutations or other interfering factors affecting the dynamics of the output voltage deviation should not exceed the rating of ± 8% or ± 10%.
2 , the output voltage imbalance : Under normal operating conditions, the inverter output phase voltage unbalance ( reverse component of the ratio of positive sequence component ) should not exceed a specified value , usually expressed in% as 5 % or 8 %.
3 , the output voltage waveform distortion : When the  220 volt power inverters   output voltage is sinusoidal , shall specify the maximum allowable waveform distortion ( or harmonic content ) . Usually to a total distortion of the output voltage waveform that its value should not exceed 5% ( 10% single phase output enable ) .
4 , rated output frequency of the inverter output AC voltage frequency should be a relatively stable value , usually frequency 50Hz. Under normal operating conditions the deviation should be within ± 1 %.
5 , the load power factor : the ability to characterize the capacitive load inverter with inductive load or . In the sine condition, the load power factor of 0.7 to 0.9 ( hysteresis ) , the rating is 0.9 .
6, rated output current : Indicates the inverter within the specified range of the rated output power factor of the load current . Some inverter products given is rated output capacity , the unit in VA or KVA said . The rated capacity of the inverter when the output power factor of 1 ( ie, purely resistive load ) , the rated output voltage of the rated output current of the product.
7 , rated output efficiency: The efficiency of the AC power inverters inverter under specified operating conditions , the output power to input power ratio , in%. Inverter efficiency at rated output capacity for full load efficiency of 10% at rated output capacity efficiency at low load efficiency.
8 , Protection: over-voltage protection : No voltage stabilization measures for the inverter output over-voltage protection measures due to the negative output cut from overvoltage damage.
Overcurrent protection : inverter over-current protection , should be able to ensure that a short circuit in the load current exceeds the allowable value or action from time to time , so from inrush current damage.
9 , starting characteristics : characterizing the performance of the inverter starting with a load capacity and dynamic work. The inverter should ensure reliable starting at rated load .
10 , the noise : the transformer power electronic device , the filter inductor , electromagnetic switches and other components are the fan noise is generated . Normal operation of the inverter , the noise should not exceed 80dB, small inverter noise should not exceed 65dB.

The working principle of the inverter

1 . Full-controlled inverter works: Figure 3 shows , for the full-bridge inverter main circuit commonly used single-phase output figure, the AC components using
the IGBT Q11, Q12, Q13, Q14. Controlled by the PWM pulse width modulation IGBT tube turned on or off .
   When the  4000 watt power inverter  circuit connected to a DC power source , first Q11, Q14 is turned on , Q1, Q13 is turned off, the current from the positive output of theDC
power supply , via Q11, L or sense transformer primary winding 1-2, back to Q14
to the negative power supply . When Q11, Q14 after the deadline , Q12, Q13 is
turned on , current flows from the positive power supply through Q13, electrical
transformer primary winding 2-1 am Q12 back negative power . In this case, the
transformer primary winding , has formed an alternating positive and negative
square wave , the use of high frequency PWM control , two pairs of IGBT tube
alternately repeated , generating an AC voltage on the transformer . Since LC AC
filter effect, so that the output AC voltage sine wave form .
   When Q11, Q14 off when , in order to release the stored energy in the IGBT
diode in parallel at D11, D12, so that energy back to the DC power supply to go.Th2 is triggered according conduction, because reverse biased anode Th2 , Th1
off, return the blocking state . Thus , Th1 and Th2 commutation , and then charge the capacitor C and reverse polarity . So turn triggered thyristors ,
alternating current flows transformer primary , the secondary of the transformer
to get the AC .
   In the circuit, the inductance L can be limited for the discharge current of
the capacitor C , to extend the discharge time to ensure that the circuit is
greater than the turn-off time of the  220 volt power inverters  turn-off time without a large
capacity capacitor . D1 and D2 are two feedback diode , inductor L can be the
energy release , it will be returned to the remaining energy supply , completethe feedback energy.

Solar inverter centralized inverter

Concentrated photovoltaic  sine wave power inverters  and is commonly used in large power stations (> 10 kw) system, a lot of parallel photovoltaic group of string is connected to a single centralized inverter dc input, the use of the general power three-phase IGBT power modules, the use of smaller power field effect transistor, at the same time using DSP conversion controller to improve the quality of the output power, making it very close to the sine wave current. Biggest characteristic is the system of high power, low cost. But the pv group string matching and part of the covering film, lead to the efficiency and capacity of the whole solar system. At the same time, the whole pv system reliability of generating a photovoltaic cell set of adverse effects of work status. The latest research direction is using space vector modulation control, as well as the development of new  grid inverters  topology connection, to get part of the load cases of high efficiency.
In SolarMax (sory & middot; mike) focused on the inverter, you can attach a photovoltaic array interface box, to monitor each string of strings of photovoltaic panels, such as one group work is not normal, the system will put this information on to the remote controller, at the same time can through the remote control will stop working, and the line which will not be reduced because of a string of photovoltaic (pv) list of fault and affect the entire solar system work and energy output.

Reducing the power inverter system operation and maintenance costs

 Integrated automation substation is now running in the background monitoring computer generally located, mostly for microwave communications equipment and optical machines, monitoring and grid inverters communications equipment such as AC power supply operating power to achieve uninterrupted power supply to meet the requirements of four remote different uninterruptible power supply equipment shall be installed 220v inverters  separately (UPS) and batteries. The installation of substation power inverter can be directly used in DC power systems use large-capacity battery provides AC power, UPS power supply scheme savings than investment costs, avoid duplication of investment in battery, reducing the maintenance workload, reducing the operating costs.

Power Inverter prospects

Power Inverter in foreign markets was generally welcomed. Abroad due to the higher prevalence of motor vehicles, there is no occasion when they go out in the mains work or travel to connect car battery with an  2500 watt power inverter   electrical appliances and power tools to drive to work. After China's entry into WTO, more and more private buyers in the domestic market, therefore, as a DC power inverter for use in the car on the move to AC power converter will bring convenience to your life, but also the essential car owners supplies.

High-frequency inverter

By high-frequency DC / AC conversion technology, low-voltage high-frequency low-voltage AC DC 5000 watt inverter  and then after a high-frequency step-up transformer, rectifier filter and then through the high-frequency rectifier circuit in a high voltage DC 300V are usually more, and finally through work frequency inverter circuit to get 220V frequency alternating current for the load use. Advantages and disadvantages of high-frequency 6000 watt power inverters  high-frequency inverter is used in small size, light weight high-frequency core material, thus greatly improving the power density of the circuit, making the inverter load loss is small, the inverse variable efficiency has been improved. Usually high-frequency 2000 watt power inverter eak conversion efficiency of over 90%. But it also has significant shortcomings, high frequency inverters can not take the full load of the inductive load, overload and poor.

Knowledge of the power inverter

1 What is the power inverter? Power inverter (car power) is a way to convert the DC power DC12V and AC220V AC mains the same, for general electrical use, is a convenient power converters. 2 in the domestic market situation is like? Power 2000 watt power inverter in foreign markets was generally welcomed. Abroad due to the higher prevalence of motor vehicles, there is no occasion when they go out in the mains work or travel to connect car battery with an inverter, electrical appliances and power tools to drive to work. 3 Why promotion in the country this product? After China's entry into WTO, more and more private buyers in the domestic market, therefore, as a DC power inverter for use in the car on the move to AC power converter will give your life with to facilitate, but also car owners essential supplies. 4 power 8000 watt power inverters can be used in automotive systems it? Power inverter applies not only to vehicle systems, as long as there are occasions DC12V power, can use the power inverter to convert DC12V AC220V AC, to your life convenience.

power inverter

Inverter, an 2500 watt power inverter device must be something to so called, he and transformer has a direct difference, that is to say, he can realize the input and output DC, AC, working principle and switch power source, but the shock frequency in a certain range, for example if the frequency is 50HZ, the output is for the exchange of 50HZ. The 12v power inverter is can change its frequency equipment.

Analysis of car inverter

The inverter according to different sources of power, divided into coal power inverter, solar 2500 watt power inverter, power inverter, power inverter. According to different purposes, divided into independent control of the inverter, grid connected inverter. The efficiency problem of the current domestic market inverter. The 8000 watt power inverters in the work itself also consumes a part of the power, therefore, its input power than its output power.

Development of the next generation of mainstream

Resonant soft-switching Pure sine wave power inverter concept appeared on the show from a vigorous vitality. This concept is subject to various countries in recent years, more and more professional attention and in a short time has been a very rapid development.
As we all know, pulse width modulation DC AC power inverters technology in the development of modern electronic technology, modern AC drive system has played a great role in promoting.

sine wave power inverters

Sine wave sine wave power inverters is divided into several kinds, rounded trapezoidal wave is close to sine wave is not much difference between the square and square wave to. Here we only discuss the square wave, which is currently the most commercially available high frequency 24 volt power inverters to provide the waveform.
This kind of sine wave inverter power supply can be applied to notebook computer, TV, combined sound, camera, digital camera, printer, all kinds of chargers, palm electrical brain, game machines, video machines, mobile DVD, home treatment instrument and so on, the inverter output power larger also can be applied to small electric appliances such as electric hair dryer, electrothermal cup, kitchen appliances and so on.