300 watt power inverter Independent inverter operating characteristics of the PVS

( 1 ) Reliability

PVS from the previous operation , the inverter is one of the main factors affecting the reliability of the system . Since independence inverter typically work in remote areas , if there are 24v pure sine wave inverter‍ problems maintenance inconvenient , so the first requirement is independent inverter must be safe and reliable operation .

( 2 ) Rated output capacity

In the stand-alone inverter, rated output capacity is also a very important reference factor , which indicates the load capacity of the inverter power . High values ??of rated output capacity inverter can bring more electricity load. In this particular note is that when the inverter is not purely resistive load, the load capacity of the inverter rated output capacity will be less than the value it gives .

( 3 ) inverter efficiency

Inverter improve the level of efficiency of the system and reduce the effective cost of electricity generation capacity has an important impact. Due to the current cost of solar cells is still relatively high, but there will not be much reduced in recent years , so for standalone inverters require high efficiency , especially when 4000w power inverter‍ low-load power , still has high efficiency, low the load is independent of the load in higher demand dedicated PVS inverters inverter is relatively common .

00 watt power inverter Select the inverter power devices

At present , the domestic photovoltaic power generation system (PhotoVoltaic Sys-tem, referred to as PVS) DC system mainly based, but the most common electrical load is AC load , which 48v to 220v power inverter‍ makes photovoltaic DC power supply is difficult to popularize as a commodity . Meanwhile, the solar photovoltaic power generation can not batteries, and simple to maintain , while saving investment trends of PV . These must be AC power supply , so the inverter in the PVS also increasingly important. The inverter is a power conversion device converting the direct current into alternating current , the inverter technology in power electronics technology is more mature . For example : UPS power supply inverter , inverter technology inverter technology , special power of inverter technology and power regulator inverter technology, these have been in the form of the product to the market , and by the social widely recognized.

In the small-capacity , low- PVS , the more power the device using a metal - oxide - semiconductor field effect transistor (MOSFET). Because at low pressure , with a low on-state voltage drop and high switching frequency, but with the MOSFET voltage increases , the on-state resistance increases . Thus, in the large-capacity , high-pressure PVS , in general, the use of insulated gate transistor (IGBT) as a power device ; in large capacity above 100kVA PVS , in general, the use of gate turn- off thyristor (GTO) as a power device . PVS inverter driver circuit in the main power switch for the gate drive . To get a good PWM pulse waveform , the drive circuit design is very important. In recent years , with the development 24v pure sine wave inverter‍ of microelectronics and integrated circuit technology , have launched a number of multi-function -specific integrated chips , such as : HIP4801, TLP520, IR2130, EXB841 etc., which brings great convenience to the application circuit design [ 1 2 ] . Inverter control circuit commonly used mainly for driving circuit provides the required logic and waveforms, such as PWM, SPWM control signals.

2500 watt power inverter Multi series inverter

Multi series inverter for electric car has many advantages . Type series arrangement greatly increases the output voltage vector , enhances the flexibility to control and improve the accuracy 40A mppt charge controller‍ of control ; while reducing the fluctuation of the motor neutral point voltage . Inverter bypass charging characteristics can be improved flexibility and regenerative braking control .

With the growing concern for the urban environment , the development of electric cars got a rare opportunity. In urban traffic , the electric bus due to the large carrier , comprehensive benefits , become the object of priorities. Electric buses were powered by a three-phase AC motor, because the motor power, three-phase inverter device needs to withstand effects of high voltage and high current stress , high dv / dt and severe electromagnetic radiation , and the need for good cooling.

The use of multi- series structure of power inverter is a single 220v power inverter‍ device reduces voltage stress , reducing the device's requirements; reduce the dv / dt value , reducing the electromagnetic radiation , heating devices are greatly reduced ; due to output increase the level of species , the control performance is better.

Multi series inverter suitable for high-power electric vehicle drive system. Using multiple tandem structure , a plurality of batteries connected in series can reduce the risk that will reduce the switching device and reducing the stress of electromagnetic radiation. But the number of batteries needed increased 2 -fold.

Multiple tandem structure of the output voltage vector species greatly increased, thus increasing the flexibility of the control and improve the accuracy of control ; motor while reducing the fluctuation of the neutral point voltage . In order to maintain the balance of each set of battery power , the need to ensure a consistent runtime battery discharge time. Through the bypass mode , the flexibility to charge the battery pack , 12v to 110v inverter‍ regenerative braking torque can be controlled.

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2000 watt power inverter HS150K3 PV grid-connected inverter manual

With the development of resonant switching power supply , thinking resonant converter is also used in the inverter power supply system , which constitutes a resonant inverter efficiency . 8000w high frequnency inverter‍ The inverter is the use of a zero voltage or zero-current switching technology in the DC / DC converter , and thus can basically eliminate switching losses , even after more than 1MHz switching frequency when more power efficiency is not significantly reduced. Experiments show that : in the same operating frequency , the resonant conversion loss comparable non-resonant mode conversion was reduced by 30 % to 40 %. Currently, the resonant frequency of the power supply of up to 500kHz to 1MHz.

Also worth noting is that the study of photovoltaic systems with small power inverter is moving in the direction of the development of modular , which uses a combination of different modules , can constitute different voltage waveform conversion system .

Undoubtedly, medium power PV systems will use high-frequency inverter power conversion circuit structure. In some of the technical details , will be different from the power inverter other occasions , such as the addition to the pursuit of high reliability, high efficiency outside , but also for the photovoltaic industry, the characteristics 40A mppt charge controller‍ of the control , the inverter effectively combined, ie PV inverter should be designed with overvoltage , undervoltage , short circuit , overheating, reverse polarity protection. This not only reduces the cost of the system, and improve the reliability of the system.

1500 watt power inverter Small power inverter

Small power inverter is one of the independent AC photovoltaic system is an important part of household, the reliability and efficiency of the promotion of photovoltaic systems, energy efficient, reduce 1500w power inverter‍ the cost of essential system? Thus PV experts in various countries have been working to develop suitable for indoor use power inverter, to promote better and faster development of the industry. 

PV systems with small power inverter power inverter power by converting technology can be divided into frequency conversion and high conversion. Frequency transformation is the use of discrete devices or manifold generate 50Hz square wave signal, then the signal is to promote the use of the power switch, the use of frequency step-up transformer produces 220V AC. This power inverter simple structure, reliable operation, but because of defects in the circuit structure itself, not suitable with inductive loads, such as refrigerators, electric fans, water pumps, fluorescent lighting. 8000w high frequnency inverter‍ In addition, due to the use of this power inverter frequency transformer, thus bulky, heavy, high price. Currently mainly used in large-scale solar photovoltaic power plants.

1000 watt power inverter Precautions inverter

< 1 > TV, monitor , such as a motor when starting the peak power , although the power converter can withstand twice the nominal peak power , but some electrical power in accordance Solar power inverters‍ with the peak power requirement may exceed the peak output power of the converter , causing overload current is turned off. While driving multiple appliances could happen , then you should turn off electrical switches , open the converter switch , and then turn on electrical switches one by one , and should be the first to turn on the highest peak of appliances.

< 2 > In use, the battery voltage begins to drop when the input DC voltage converter down to 10.4-11V, alarms emit a buzzing sound , then a computer or other sensitive electrical appliances should be promptly closed , if ignored alarm sound, the voltage converter to 9.7-10.3V , the automatic shutdown to avoid excessive battery is discharged . power protection turns off, the red light is on .

< 3 > timely start the vehicle , the battery charging to prevent battery failure , the impact of the car starts and the battery life.

< 4 > Although the converter is no overvoltage protection , 5000w pure sine wave inverter‍ input voltage exceeds 16V, may still damage the converter.

After <5 > continuous use , the shell surface temperature to rise to 60 ℃, attention unobstructed airflow , temperature sensitive objects away from the impact .‍

500 watt power inverter Inverter Precautions

1 , the DC voltage to be consistent

Access to each inverter has a DC voltage value , such as 12V, 24V , etc., and asked to choose the battery voltage must be consistent with the DC input voltage of the inverter . 2v car inverter‍ For example , 12V 12V battery inverter must choose .

2 , the inverter output power must be greater than the use of electrical power , especially when starting power for large appliances such as refrigerators, air conditioners , but also leave bigger margin.

3, the positive and negative must be connected correctly

Access to the inverter DC voltage labeled positive and negative . Red is positive ( + ) , black is negative ( - ) , also marked on the battery positive and negative , red is positive ( + ) , black is negative ( - ) must be connected to the connection being positive ( red pick red ) and negative to the negative ( black to black ) . Cable diameter must be rough enough, and to minimize the length of the cable .

4 , should be placed in ventilated, dry place to guard against rain , and with the surrounding objects distance of more than 20cm away easily

Burning explosive materials , or cover other items electric inverters‍ should not be placed on the machine , the ambient temperature of not more than 40 ℃.

5 , the charging can not be performed simultaneously with the inverter . That is not the inverter of the inverter output of the charging plug into an electrical circuit.

6 , the two switched intervals of not less than 5 seconds ( off the input power ) .

7 , with a dry cloth or anti-static cloth to keep the machine clean.

8 , the input and output connections of the machine before , first shell properly grounded machine.

9 , in order to avoid accidents, non- user to open the case to operate and use.

10 suspected faulty machine , please do not continue to operate and use , should be promptly cut off the input and output , by qualified service personnel or maintenance units for inspection.

11 , when connecting the battery , make sure inverter bypass switch‍ your hands are no other metal objects to avoid short-circuit the battery , the body burns .

800 watt power inverter Inverters environment based on security and performance considerations

Inverters environment based on security and performance considerations, installation environment should meet the following conditions 

<1> Drying: not flooding or rain 

<2> cool: a temperature 6000 watt power inverters‍ between 0 ℃ and 40 ℃ 

<3> Ventilation: No foreign body 5CM remain on the housing, the other end face of a well-ventilated 

13. Installation method 

<1> the converter switch to OFF (OFF) position, then put the cigar head into the car cigarette lighter socket, plug in place and ensure good contact. 

<2> Make sure that all electrical power be used in the G-ICE nominal power below 220V plug the appliance directly into the converter 220V socket at one end, and to ensure that all connections are two outlets of electrical power and the G-ICE less than the nominal power. 

<3> Open converter switch, the green indicator light indicates normal operation. 

<4> The red indicator light, said that due to over / under voltage / overload / over temperature, causing the converter off. 

<5> In many cases, due to the limited car cigarette 20A mppt solar charge controller‍ lighter socket output, making normal use of the converter alarm or shutdown, then as long as the vehicle is started or reduce electric power can be restored to normal.

watt power inverter Car cigarette lighter socket can output more power for electricity ?

To take power from the cigarette lighter socket , the inverter should be able to drive the power of a hundred -watt electrical appliances . But customers reflect , then P4 laptop solar inverters‍ minutes later, the inverter automatically power off and alarm. We know , P4 laptop power of about 90 watts, is higher . As some of the models in this circuit from the battery to the socket cigarette lighter on the use of non-compliance leads and cigarette lighter socket , large losses in the current surge in the circuit , the supply voltage of the inverter to a sharp decline undervoltage protection circuit action is the critical point - 10 volts , causing the inverter to stop power supply . To solve this problem , and to ensure that in future the normal , safe and reliable use of the inverter , it is recommended to wire the circuit is converted into high-quality copper wire cross-sectional area of ??2.5 mm2 or more , and if necessary replace the cigarette together socket.

Another point to note is taken from a car cigarette lighter socket DC power to the inverter , car cigarette lighter only supports 300W power, or car cigarette lighter power inverter due to 500w power inverter‍ the use of excessive and burn , if you must to use more than 300W inverter , it can give an inverter directly from the car battery wiring.

1500 watt power inverter What is the risk of using an inverter

From the car battery to the inverter input of a piece of wire which carries a very large current, because the poor quality of the wire if the wire too small or copper heat load exceeded vehicle power inverters‍ even eventually lead to a fire, will lead to a serious accident. Thus, in the course of the inverter must be operated in strict accordance with the user manual.

1500 watt power inverter How is the battery is equipped with a suitable inverter?

If the specifications of the battery is 12 V, 50 Ah, we solar power inverter‍ multiply by 12 volt 50 A, the output power of the battery obtained is 600 watts. If the inverter efficiency is 90%, then 90% then we multiply 600 watts, 540 watts obtained. This means that you can push a piece of battery output power up to 540 watts inverter. Of course, you can also take the "one step" type of procurement method, which is to present its own regardless of the specifications of the car with the battery, and buy a power output of 800 watt inverter. Then, the first piece of the battery within the allowable range of immediate use, such as the future for a greater use of the car before full power. Finally, do not ask for power inverters, for example, 100 watts is enough, then you can buy a small power inverter. Moreover, when determining the power of the inverter, there is an important principle that when using an inverter, not long-term operation at full load, which would significantly shorten the life of the inverter while the inverter failure rate is significantly rise. We strongly recommend that ehicle power inverters‍ users, it is best to use an inverter in not more than 85% of the rated power of the state.