Powerful Reliable Innovative

Medium Voltage Drives

In recent years high energy consumption has constrained economic growth deeply with the increasing GDP therefore, the goverments has invested too much money to support energy savings and consumption. High voltage variable frequency drive technology has been widely used for speed regulation, energy saving, soft start up and intelligent control of the motos in such industries as thermal power plants, petroleum, chemicals, mining and metalurgy. Our WLD-HVF based on near 20 years rich experiences in power electronics. It has many independent innovative core technologies.

APPLICATION FIELDS
Power Generation
Induced draft fan, forced draft fan, condensate pump, feed pump, primary air fan, secondary air fan, booster fan, circulating pump, mill fan, slurry pump etc
Cement
Draft fan, high-temperature fan, air blower, dust collection fan, grinding mach etc.
Metallurgy 
Blast furnace blower, slurry pump, feed water pump, dust fan, compressor etc.
Petroleum & Chemical
Water injection pump, crude oil pump, Compressor, fan, circulation pump, etc
Urban water supply 
Water intake pump, water supply pump, sewage treatment industry, etc
Minerals & Mining 
Mud pump, ventilation fan, belt conveyor, slurry pump etc
Others 
Loads such compressor in pharmaceutical, paper making and wind tunnel test.

TECHNICAL SPECIFICATIONS
  • Voltage source High frequency inverter, can realize 
  • no-step speed regulation, which converts typical motors into intelligent motors.
  • Low harmonics input and high power factor, the typical value for power factor is greater than 0.9. There are few harmonics during whole speed regulation process, no need for power factor compensation.
  • Modularized design of power units, interchangeable and easy to produce and repair, the equipment can find any fault exactly based on advanced diagnostic procedures in MPU.
  • The inverter still can operate even the faults for part of power units exists, if there are faults happen for inverter, the system can switch to power frequency through bypass function.
  • Applicable to all kinds of power grid at home and abroad and suitable for typical high voltage motor.
  • Colourful touch screen, easy to operate and maintenance.
  • Able to realize remote control, DCS operation and communications with host and support all kinds of communications interfaces such as CAN, Profibus, Modbus, etc.
  • Applied latest components, master control chip adopted TI’s DSP F28335 and ALTERA’s FPGA of EP3C to realize powerful processing capacity; Sampling adopted AD’s AD7606 with 16 bit to ensure control accuracy of the system.
  • The switchgear can satisfy safety requirements, and the pressure-relief channel of high voltage switch can ensure safe use of operators.

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