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Spindle Motor 3 phase 380V Vector Frequency Conversion Strong Performance
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A variable-frequency drive (VFD), also known as an adjustable-frequency drive (AFD), variable-voltage/variable-frequency (VVVF) drive, variable speed drive (VSD), AC drive, micro drive, or inverter drive, is a type of motor drive that controls AC motor speed and torque by varying motor input frequency and voltage.


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Changzhou Holry Electric Technology Co., Ltd.
Jiangsu, China
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A variable frequency drive (VFD) is a motor control device that safeguards and regulates the speed of alternating current (AC) induction motors. According to the Holry, a VFD can change the speed of the motor throughout the start and stop cycle, as well as throughout the running cycle, by producing variable frequency. Variable Speed Drives (VSD), Adjustable Speed Drives (ASD), and frequency inverters are other terms for the same thing.
VFDs are utilised in a wide range of applications, from small appliances to big compressors. Electric motor-driven systems consume around 45% of the world's electrical energy. VFD-controlled systems can be more efficient than those that use throttling control of fluid flow, as in systems with pumps and damper control for fans.However, global market penetration for all VFD applications is rather low. Over the last four decades, developments in semiconductor switching devices, drive topologies, modelling and control approaches, and control hardware and software have lowered VFD cost and size while improving performance. VFDs are available in a variety of low- and medium-voltage AC-AC and DC-AC topologies.

Model H100-0.75T4-1B
Brand HOLRY


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