光伏发电是将光能通过半导体的特性直接转化为直流电能的，再通过逆变器将直流电转换成可以被我们使用的交流电。

光伏系统是由光伏组件，支架，直流电缆，逆变器，交流电缆，配电柜，变压器等组成，其中支架不带电，自然不会产生电磁辐射。光伏组件和直流电缆，里面是直流电流，方向没有变化，只能产生电场，不能产生磁场。

输出变压器虽然是交流电，但频率很低，只有50Hz，产生的磁场很低。逆变器是把直流电转为交流电的设备，里面有电力电子变换，频率一般为5-20KHz，因此会产生交变电场，所以也会产生电磁辐射。国家对光伏逆变器电磁兼容性有严格的标准。

（各种家用电器和光伏组件的辐射对比）

光伏逆变器的电磁辐射，同家用电器相比，大约和笔记本电脑差不多，低于电磁炉，电吹风，冰箱。

因此，建设光伏电站不仅不会对人的健康产生危害，还可以为地球提供绿色清洁的优质能源，是人类未来能源发展方向。

Photovoltaic power generation is the direct conversion of light energy into direct current energy through the characteristics of semiconductor, and then through the inverter to convert direct current into alternating current that can be used by us.

Photovoltaic system is composed of photovoltaic module, bracket, DC cable, inverter, AC cable, distribution cabinet, transformer, etc., the bracket is not charged, naturally will not produce electromagnetic radiation. Photovoltaic modules and DC cables contain DC current, and the direction does not change. They can only generate electric fields, but not magnetic fields.

Although the output transformer is AC, the frequency is very low, only 50Hz, and the magnetic field generated is very low. Inverter is the direct current into alternating current equipment, which has the power electronic transformation, the frequency is generally 5-20KHz, so it will produce alternating electric field, so it will also produce electromagnetic radiation. The state has strict standards for electromagnetic compatibility of photovoltaic inverters.

The picture

(Radiation comparison of various household appliances and photovoltaic modules)

The electromagnetic radiation of photovoltaic inverters, compared with household appliances, is about the same as that of a laptop computer, and lower than induction hobs, hair dryers, and refrigerators.

Therefore, the construction of photovoltaic power stations will not cause harm to people's health, but also can provide the earth with green, clean and high-quality energy, which is the future development direction of human energy.