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  • V&T helps first thousand-ton battery electric cargo-ship in the Yangtze River successfully trial sail
    • May 22. 2021

    Recently, the first 1000-ton battery electric cargo ship "Zhongtian Dianyun 001" in the Yangtze River Basin was successfully tested in Changzhou, Jiangsu, which marked the official era of clean energy in the Yangtze River freight ships, thereby reducing the emission of pollutants at the source. The battery electrification of ships faces the challenges of complex environments, and has many strict r...

  • More than 1000 PCS NEW Electric Truck equipped V&T EV motor controller
    • June 04. 2021

    V&T’s 1000pcs electric vehicle motor controller, help save energy and reduce emissions, let “Blue Shenzhen” put into practice. After fully electrification for both bus and taxi in Shenzhen, the electrification’s target point to dump truck. Recently, 1000 battery electric environmental protect dump trucks equipped with V&T’s electric vehicle motor controller one after another for using. It ...

  • About Variable Frequency Drive (VFD)
    • June 21. 2021

    A Variable Frequency Drive (VFD) is a type of motor controller that drives an electric motor by varying the frequency and voltage supplied to the electric motor. Other names for a VFD are variable speed drive, adjustable speed drive, adjustable frequency drive, AC drive, microdrive, and inverter. Frequency (or hertz) is directly related to the motor’s speed (RPMs). In other words, the faster the f...

  • What’s the difference between AC and DC drives?
    • June 28. 2021

    When it comes to AC drives vs DC drives, DC drives are commonly considered problematic, despite their prestige for having simple circuits, providing high start-up torque, and being ideal for applications with constant speed due to the requirement of commutators and brush assemblies in their motors. These motors can become worn over time, have operational issues, and will likely require labor to pr...

  • The Technology Behind AC Motor Speed Control
    • July 06. 2021

    AC drive is a device that is used to control the speed of an electric motor. The speed is controlled by changing the frequency of the electrical supply to the motor. The three-phase voltage in the national electrical grid connected to a motor creates a rotating magnetic field in it. The rotor of the electrical motor will follow this rotating magnetic field. Motor Speed Control The speed is control...

  • V5-H Series AC Motor Drive Fault and Alarm Information Troubleshooting
    • August 06. 2021

    Once a fault is detected, the following fault code will be displayed on the operation panel, the fault contact output operates, and the output to motor is disable, the motor will coast to stop. For details, refer to the following table to identify and correct the cause of the fault. Fault No.  Fault display on panel Fault description Possible causes Corrective actions 1 E.oc1 Over c...

  • how does a ac drive control speed
    • August 19. 2021

    The ac drive controls the speed of the pump and fan by changing the electrical energy supplied rather than damping the air- or water flow. It is like reducing the speed of a car by pressing less on the accelerator instead of using the brake to slow down the speed. The payback time of an ac drive is typically one year or less. Other benefits of using ac drive to control the speed of fan or pump are...

  • What are the applications of AC drive?
    • August 24. 2021

    Drives are widely used in manufacturing industries to regulate and control rotating equipment such as fans, conveyors, machine spindles, and pumps, which are used in production processes. AC drives are widely used in process industries to increase the efficiency of equipment. It controls the speed of electric motors according to the process needs, typically reduces energy consumption by 35-40%. Ho...

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