MITSUBISHI inverter FR-D720 series.
Voltage level: three phase 200V.
Frequency converter capacity: 0.1KW.
Vector control variable frequency speed control is the practice of the asynchronous motor in the three-phase coordinate system of the stator current Ia, Ib, Ic, through the three-phase to two-phase transformation,
The alternating current of Ia1Ib1 is equivalent to a two phase stationary coordinate system, and then is rotated by the rotor field oriented,
Equivalent to the DC current Im1, It1 (Im1 equivalent to DC motor excitation current in synchronous rotating coordinate system;
It1 equal to the armature current proportional to the torque, and then imitate the DC motor control method, to obtain the DC motor control,
The control of asynchronous motor is realized through the corresponding inverse coordinate transformation FR-F740-S250K-CHT Manual FR-F740-S250K-CHT TECHNICAL MANUAL FR-F740-S250K-CHT Manual FR-F740-S250K-CHT TECHNICAL MANUAL FR-F740-S250K-CHT MITSUBISHI inverter series: FR-F840.
Voltage level: three phase 400V.
Power: 2.2kw.
SLD converter rated current: 5.2A.
Structure and function: Standard model.
Type: CA.
Substrate coating: have.
2 times the power consumption of the wind turbine and pump and the speed of the 3 power consumption is proportional to the speed of the rotating speed FR-F740-S250K-CHT Manual FR-F740-S250K-CHT TECHNICAL MANUAL.
Through the speed control of the frequency converter to adjust the air flow, can reduce the power consumption.
Give full play to the performance of the motor.
The excitation current is always adjusted to the best state, which can improve the efficiency of the motor.
Load torque is smaller, can further improve energy efficiency.
For example, when a general motor is used, the optimal excitation control mode in the 4% motor load torque is about 30% more than that of the V/F control. Power: 11kw.

Purpose: to suppress the power harmonics FR-F740-S250K-CHT Manual FR-F740-S250K-CHT TECHNICAL MANUAL.
Connected to the inverter input, can be used to improve the power factor, reduce the input side of the high harmonic current.
According to the mmotor power used to select AC reactor FR-F740-S250K-CHT Manual FR-F740-S250K-CHT TECHNICAL MANUAL.
(when the inverter capacity is greater than the motor capacity, is still based on the motor capacity to choose.)