The VVVF motor generally choose four motor base frequency and dot design in the 50-100Hz 50Hz 0-50Hz (speed 0-1480r/min) motor for constant torque operation, the frequency (speed 1480-2800r/min ) within the scope of the motor for constant power operation, the entire speed range (0-2800r/min) basically meet the general requirements of the driven equipment, the operating characteristics of the DC drive motor, speed smooth. If constant torque machine, but the volume of the motor is relatively large.
Electromagnetic frequency conversion motor design using a flexible CAD design software, the fundamental frequency of the motor design point can be adjusted on the computer, we can accurately simulate the operating characteristics of the motor base frequency, this also means that expand the constant torque speed range of the motor, according to the the motor actual use conditions, we can in the same frame size motor power greater, you can also use the same inverter on the basis of motor the output torque mentioning higher to meet the design and manufacture of the motor under a variety of working conditions in the best condition. Frequency conversion motor can additionally optional additional speed encoder can achieve high-precision speed and position control, the advantages of fast dynamic response characteristics. Also be accompanied by a dedicated DC motor (or AC) brake motor to achieve fast, effective, safe and reliable braking performance. Frequency conversion motor base frequency adjustable design, we can also produce a variety of high-speed motor to maintain a constant torque characteristics at high speeds, to some extent replaced the original IF motor, and low prices. Frequency conversion motor to three-phase AC synchronous or asynchronous motors, three-phase 380V or three-phase 220V according to the output power of the inverter, motor power difference of three-phase 380V or three-phase 220V, 4KW inverter only phase 220V can be divided into different area of constant power speed and constant torque speed zone inverter motor is based on the fundamental frequency of the motor point (or inflection point), so the base frequency of the frequency converter and inverter motor base frequency settings are very important.