Lightning in the drive, usually has lightning absorb the network drive offer, mainly to prevent momentary lightning invasion, the inverter damage. But in practice, especially in the case of the introduction of the overhead power line drive, network drive alone to absorb not meet the requirements. Lightning activity in the region, this issue is particularly important if the overhead power line, installation of variable frequency arrester (optional) into the line in place, or according to specifications in the 20m distant from the drive to do for embedded steel ground protection. If the power cable is introduced, it should do the control room of the lightning protection system drive prices to prevent lightning damage to equipment fleeing. Practice shows that this method can effectively solve the lightning basically the problem. Nine, harmonic control and reactive power compensation inverter power system harmonic control is widely used as the inverter, inverter power supply system and the significance of reactive power compensation is gradually being recognized. Inverter power supply by Fourier series can be decomposed into fundamental active current, fundamental reactive current, harmonic and inter-harmonic currents. Existing Building Energy Saving refers envelope do not meet the mandatory standards for civil energy of existing buildings, heating systems, heating and cooling systems, lighting and hot water supply facilities, such as the implementation of energy-saving activities. Industrial boiler energy-saving technology, which can improve the thermal efficiency of the boiler, the boiler thermal efficiency can reach 70% -80% of the inverter brand, you can save coal 10% -15%. The basic principle is that the high-tech material technology, combustion technology and integrated boiler technology combine together, through a series of physical and chemical changes, to achieve enhanced combustion of coal combustion, combustion, incomplete combustion of a new combustion. This technology has been the national and user acceptance. Drive principle _ Yueyang Ohm Electric (certified) _ Drive by Ohm Electric Co. Yueyang. Yueyang City Ohm Electric Co. (www.yyomdq.com/) Hunan Yueyang, inverters, frequency divider leaders, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs . In Yueyang Ohm Electric leadership with the staff warmly welcome all inquiries negotiations to create the ohmic electrical Yueyang a better future.