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AS800 high-voltage frequency converter is a kind of high-voltage frequency conversion governor, featuring on energy saving and environmental protection, developed by Shanghai sigriner step electric Co., Ltd by using the linernational sophisticated power electronic technology and vector control technique. It not only owns outstanding control performance, but also integrates with application characteristics in China, to further strengthen the reliability of the product and environmental adaptability as well as customized and industrialized design, which better meet a wide range of applications in coal mining, cement, thermal power, petroleum, rubber, metal, chemical, paper making industries, etc.
FEATURES
1.Flexible closed-loop control The method of vector control without sensor control the speed stably. For accurate speed control or greater starting torque, select the closed-loop vector control with sensor
2.High-grade load of power supply The secondary winding of the input transformer with multiple reduces the pollution to power supply by higher harmonic current, conforming to the strictest IEEE 519 standard It is a real sense of Perfect Harmony series of frequency converter, which inherently provides a sinusoidal output without the use of external output filters and power factor compensation.
3.The quality drive of motor Multi-level PWM control mode, providing sine wave output current Small common mode voltage and DV/dt, without special requirements for motor and cables, modifying the aging equipments without replacing the motor.
4.Ideal mechanical power The upper harmonics of output current is minute and the effect of the torque pulsations to shaft system can be ignored High efficiency Output current is sine wave basically, reducing the upper harmonics loss of motor. The upper harmonics in the transformer primary is low and the system efficiency is above 97% Output transformer is not required, eliminating the loss hereof Multi-level PWM control, reduce the loss of IGBT high frequency switch
5.High power Use diode full-bridge rectification, the power factor may be up to 95%above without power factor compensation High reliability IGBT inverter: Adopt 1700V high-voltage IGBT, reduce the number of components, and improve the reliability of system Strong anti-interference: The control system is isolated ffrom the power units by optical fibers, safe and reliable Powerful self-diagnostic capability: Precise and timely pre-warning protection for various unexpected events in the system
6.Energy saving Soft startup of inverter, greatly reducing the starting current of motor. Variable speed drive for variable torque load of fan, pump, etc., saving the energy excessively.
High-voltage drive AS800