Customize 30 hp (22kW) variable frequency drive at good price, with single phase 220 volt input and three phase 380 volt output, easy to operate and wire, convenient for you to use.
||30 hp (22 kW)
||1 phase 220~240V AC
|Output voltage (Optional)
||3 phase AC 380V/ 400V/ 415V/ 440V/ 460V (Note: 440V, 460V output voltage only for the 1-phase 240V input VFD)
|Over load capacity
||150% of rated current for 1 minute, 180% of rated current for 3 seconds
Sensorless vector control;
||150% of rating torque at 1 Hz
|Speed control accuracy
||≤±0.5% of rating synchronous speed
||Digital setting: max frequency x± 0.01%;
Analog setting: max frequency x± 0.2%
||Analog setting: 0.1% of max frequency;
Digital setting: 0.01Hz
||Automatic torque boost, manual torque boost 0.1%~30.0%
|Interior PID controller
||Be convenient to make closed-loop system
|Automatic energy save running
||Optimize V/F curve automatically based on the load to realize power save running
|Automatic voltage regulation (AVR)
||Can keep constant output voltage when power source voltage varies.
|Automatic current limiting
||Limit running current automatically to avoid frequent over-current which will cause trip
||–10℃~ +40℃; VFD will be derated if ambient temperature exceed 40℃; each rise 1℃, the derate will be 5%
||5%-95%, without condensation
||≤1000m; VFD will be derated if above 1000m
|Impingement and oscillation
||Normal running:<5.9m/s2 (0.6g); Transportation:<15m/s2 (1.5g)
||–20℃~ +60℃; no dust, no corrosive gas, no direct sunlight
Tips: Variable frequency drive control mode
Vector control is to control the size and phase of the stator current of the motor through the vector coordinate circuit, so as to control the excitation current and torque current of the motor in the d, q, 0 coordinate axis system respectively, and then achieve the purpose of controlling the motor torque. By controlling the action sequence and time of each vector and the action time of the zero vector, various PWM waves can be formed to achieve various control purposes. At present, the vector control methods actually used in the VFD mainly include the vector control method based on slip frequency control and the vector control method without speed sensor.
V/F control is in order to obtain the ideal torque-speed characteristic, based on the idea that while changing the power frequency for speed regulation, it is proposed to keep the magnetic flux of the motor constant. Basically, general-purpose VFD use this control method. The V/F control inverter is very simple, but this method cannot achieve higher control performance. Moreover, at low frequencies, torque compensation must be performed to change the low-frequency torque characteristics.