MITSUBISHI inverter series: FR-F840.
Voltage level: three phase 400V.
Power: 7.5kw.
SLD converter rated current: 17.0A.
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-A846-00250-2-60 PLC FUNCTION Manual FR-A846-00250-2-60 Programming Manual FR-A846-00250-2-60
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 FR-A846-00250-2-60 PLC FUNCTION Manual FR-A846-00250-2-60 Programming Manual. MITSUBISHI inverter FR-F740 series.
Voltage level: three phase 400V.
Frequency converter capacity: 560KW.
The main circuit of the inverter can be divided into two categories in general: voltage type is the voltage source of the DC converter for AC inverter,
The filtering of the DC circuit is the capacitance; the current mode is the DC conversion of the current source to the AC inverter,
The DC loop filter is the inductor FR-A846-00250-2-60 PLC FUNCTION Manual FR-A846-00250-2-60 Programming Manual.
Why is the frequency of the inverter voltage proportional to the change?
The electromagnetic torque of any motor is the result of the interaction between the current and the magnetic flux, the current is not allowed to exceed the rated value, otherwise it will cause the heating of the motor.
Therefore, if the magnetic flux decreases, the electromagnetic torque will decrease, which leads to the reduction of the load carrying capacity. "Power: 55kw.
Voltage: 400V.
Brake resistor, a kind of ripple resistance, is mainly used in the mechanical system of the inverter to control the speed of the motor,
Help the motor to be converted into heat energy due to the regenerative power of the motor.
Braking unit principle: the brake unit is composed off a high power transistor GTR and its driving circuit FR-A846-00250-2-60 PLC FUNCTION Manual FR-A846-00250-2-60 Programming Manual.
Its function is to link the discharge current braking resistor capacitor voltage or not in the range of the time connsumed and the DC part "overpressure",
Need to add external braking components, in order to speed up the speed of the consumption of renewable energy FR-A846-00250-2-60 PLC FUNCTION Manual FR-A846-00250-2-60 Programming Manual. "