Vector inverter: dynamic response speed, can respond to load changes within a few milliseconds, quickly adjust the torque and speed of the motor, and adapt to sudden changes in load.
Ordinary frequency converter: Dynamic response speed is slow, and when the load changes abruptly, it takes a certain amount of time to adjust the motor speed and torque, and short-term speed fluctuations may occur.
application scenario
Vector inverter: suitable for high motor control accuracy, dynamic performance and torque characteristics of the occasion, such as numerical control machine tools, printing and packaging machinery, robots, elevators, etc., to meet these equipment for precise position control, fast start and stop, frequent acceleration and deceleration requirements.
Ordinary frequency converters are commonly used in general industrial equipment and civilian equipment that do not require particularly high speed regulation performance, such as fans, pumps, and ordinary three-phase asynchronous motors. The main purpose is to achieve energy saving and simple speed regulation.
Price and cost
Vector inverters: Due to their complex control algorithms and high-performance hardware configurations, the manufacturing cost is higher, and the price is usually 30% – 50% or more higher than that of ordinary inverters.
Ordinary frequency converters: relatively simple structure and control, lower cost, more affordable, and have advantages in some cost-sensitive applications.
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