Vector inverter is a high-performance motor control equipment, mainly used to control the speed of asynchronous motors. The following is its related introduction:
Working principle
The principle of the vector inverter is based on vector control technology, which converts the three-phase system into an M-T two-phase system through coordinate transformation, and decomposes the stator current vector of the AC motor into two DC components, namely the D-axis current (excitation current) and the Q-axis current (torque current), so as to achieve the purpose of controlling the magnetic flux and torque of the AC motor respectively.
Features and advantages
High-precision control: Adopting advanced control algorithms allows for precise control of the motor, which can increase the motor control accuracy to 0.1% or even higher, enhancing the dynamic responsiveness of the system12.
Low-speed high-torque: Even at low-speed operation, it can provide a large torque output, such as 150% to 200% of the rated torque at 0.5 Hz, suitable for scenarios such as heavy-load start-up 123.
Wide speed range: The speed range can reach 1:100 or even higher, meeting the demand for accurate and wide-range adjustment of motor rotation4.
Good dynamic response: fast response to load changes, can quickly and accurately adjust the torque and speed of the motor in a few milliseconds, so that the motor can still maintain stable operation when the load fluctuates.
Improve motor efficiency and power factor: It can optimize the running state of the motor, reduce energy loss, and generally increase the efficiency of the motor by 5% to 15%. At the same time, it can improve the power factor of the motor, thereby reducing the energy consumption of the equipment and saving operating costs.
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