① solar panels generate electricity for DC, including battery storage of electricity is also DC, but the electricity used in daily life are AC in order to be able to use the normal must be converted from DC to AC, DC can not make the use of electric motors running appliances.
② alternating current is safer and more convenient to use in life, alternating current in the power transportation process can save more damage, and life is often involved in the socket insertion and extraction, the use of direct current rapid insertion and extraction will pull out a longer arc is very dangerous.
The device that converts DC to AC is the inverter, the inverter affects the power flow of DC through the H-bridge to convert the DC unidirectional to AC alternating current, in solar systems and battery systems to use the current there must be the existence of the inverter.
① pure sine wave inverter, inverter is divided into pure sine wave inverter and repair sine wave inverter, square wave, the main difference between the three is to produce a different image of the alternating current, pure sine wave inverter alternating current is more silky smooth, repair sine wave inverter and square wave alternating current is more regular, in terms of the practical range of pure sine wave inverter is better, and even the conversion of the alternating current is better than the national grid, repair sine wave inverter alternating current Cannot be used by highly sophisticated electronic equipment, in order to avoid equipment damage or choose pure sine wave inverter, although he is more expensive.
② MPPT, about PWM and MPPT are inverter current modulation method, but the two compared to PWM for the conversion of DC to AC lower efficiency, and you need to match the DC system voltage and inverter voltage to ensure that the loss is reduced, the MPPT DC to AC regulation is more intelligent, will actively monitor the circuit demand will reduce the conversion loss, is more convenient and efficient way.
You may know that electronic devices are using DC power, the need to convert the AC power in the grid again to DC power saved in the battery but not so simple. First of all, DC in the voltage conversion and can not arbitrarily change the voltage, batteries or solar panels in the electricity does not meet the voltage for electronic equipment charging, the need to step up or step down, and secondly, the conversion of DC to AC is the form of power unity and unification of current and voltage converted to 220 volts or 240 volts, the complexity of the current does not take advantage of the unity of the use of the control.
Now the most popular use of inverter industry is solar panels and wind energy, for various forms of power generation are a form of DC power in order to be able to put into use the need for power inverters, inverters for the use of renewable energy has a very important position, DC to AC converter is easy to use the use of price is not too high, for the caravan field camping and other life away from the city is more convenient. Most electrical appliances contain internal converters from small alarm clocks to large airplanes are designed for the use of converters.
For the popularization of new energy inverter is essential, at the same time in the use of current DC and AC converter also has a very important role, an excellent DC to AC converter can maximize the ordinary family with solar power to the family use, reduce the cost of electricity for remote areas to become possible.
