Application Of High-voltage Inverter In The Boiler Suction Fan

Large-capacity power plant auxiliary motor is the main power-hungry, irrationalmode of operation also led to more power. In conventional boiler flue gas system, thesuction fan in the boiler state frequency operation, the unit normal operation, routineadjustment is through entrance baffle vane adjustment of air volume in order tomaintain the system in a reasonable range of negative pressure inside. Because thelarger throttling losses baffle, some large and speed, low operating efficiency of themotor capacity, wasting a lot of energy. In order to reduce power consumption rate,many plants have adopted advanced program voltage inverter control boiler suctionfan.This paper describes the Power Generation Co., Ltd., Liaoning energy boiler suctionfan operation mode, the shortcomings and deficiencies of the original proposedoperation mode exists. Through the study of the principles of high-voltage motorspeed, and demonstrates the application of high voltage inverter for speed thefeasibility and superiority of proposed suction fan frequency transformation of theoverall program. For Hong Kong companies can suction fan original boilerconnection and working conditions and needs, preparing the installation ofhigh-voltage inverter main circuit system diagram, description of the preparation ofthe control logic switch, the preparation of the program of the furnace control system.And the overall program can be successfully applied in Liaoning Power CompanyLimited in Hong Kong boiler suction fan transformation, after a lot of data collectedand compared, reflecting the suction fan of frequency transformation to achieve agood energy-saving effect, verify the entire design correctness.After the suction fan frequency transformation, effectively reducing the auxiliarypower consumption and improve the health of the motor, after calculation, the cost ofelectricity savings within a year will be able to recover the cost of renovation, toachieve the desired effect. Design package of frequency transformation but also forthe future of the same type of motor foundation.