Mitsubishi inverter control method - Solutions - Huaqiang Electronic Network

High frequency probe high frequency line can be customized other specifications

Photocoupler

1, V / f open loop control - advantages: simple structure, easy adjustment, can be used for universal squirrel cage asynchronous motor; disadvantages: low speed torque is difficult to guarantee, can not use torque control, speed range is small; mainly used occasions: general Fan, pump energy-saving speed regulation or one inverter with multiple motor drive occasions.
2, V / f closed-loop control - advantages: simple structure, high speed accuracy, can be used for general-purpose asynchronous motor; Disadvantages: low-speed torque is difficult to guarantee, can not use torque control, the speed range is small, to increase the speed sensor; Use occasion: used to maintain pressure, temperature, flow, PH and other process occasions.
3, vector control without speed sensor - advantages: no speed sensor, good torque response, simple structure, wide speed control range; disadvantages: need to set motor parameters, must have automatic test function; use occasions: general industrial equipment Most speed control occasions.

4. Vector control with speed sensor——Advantages: good torque control performance, good torque response, high speed regulation and large speed control range; Disadvantages: need to correctly set motor parameters, need automatic test function, high precision speed Sensors; use cases: High dynamic performance applications requiring precise control of torque and speed.
5, direct torque control - advantages: no speed sensor, good torque response, simple structure, large speed control range; Disadvantages: need to set motor parameters, must have automatic test function; use occasions: require precise control of torque High dynamic performance applications such as cranes, elevators, rolling mills, etc.