光伏就是把太阳能转化为电能的过程，但太阳能产生的是直流电，而电网传输、设备运行使用的都是交流电，所以需要把直流转化为交流。交流转直流叫整流，直流转交流叫逆变，这个设备是：逆变器。是光伏的核心部件，常用在新能源汽车里。它的转化效率时刻影响着发电效率，把电池的直流转换为交流，以供电机使用。逆变器的重要性堪比燃油车的变速箱，因为它负责控制电流、电压和频率，从而改变电机的转速、扭矩，影响着电机的能耗、马力，对纯电续航和性能影响巨大。 

The heart of photovoltaics - inverters

Photovoltaics is the process of converting solar energy into electrical energy, but solar energy generates direct current, while the power grid transmission and equipment operation use alternating current, so it is necessary to convert direct current into alternating current. The conversion of AC to DC is called rectification, and the conversion of DC to AC is called inversion. This device is an inverter. It is the core component of photovoltaics and is commonly used in new energy vehicles. Its conversion efficiency constantly affects the power generation efficiency, converting the DC of the battery into AC for use by the motor. The importance of an inverter is comparable to that of a gearbox in a gasoline car, as it is responsible for controlling current, voltage, and frequency, thereby changing the speed and torque of the motor, affecting its energy consumption and horsepower, and having a huge impact on pure electric range and performance.