MITSUBISHI inverter FR-D720S series.
Voltage level: single phase 200V.
Frequency converter capacity: 0.2KW.
VVVF frequency control, vector control frequency conversion, direct torque control is a kind of AC - DC - AC frequency conversion.
The common drawback is that the input power factor is low, the harmonic current is big, and the DC circuit needs large energy storage capacity,
Renewable energy and can not be fed back to the power grid, which can not be carried out in the four quadrant operation FR-A740-37K-CHT datasheet PDF catalog FR-A740-37K-CHT PDF datasheet FR-A740-37K-CHT To this end, the matrix type of AC - AC variable frequency arises at the historic moment.
Because the matrix type alternating current frequency saves the intermediate DC link, thereby, the electrolytic capacitor with large volume and high price can be omitted FR-A740-37K-CHT datasheet PDF catalog FR-A740-37K-CHT PDF datasheet.
It can achieve a power factor of L, the input current is sinusoidal and can run in four quadrant, the power density of the system is large.
Although the technology is not yet mature, but still attract a large number of scholars in-depth study.
In fact, the quality is not the indirect control current, flux, but the torque is directly used as the control to achieve FR-A740-37K-CHT datasheet PDF catalog FR-A740-37K-CHT PDF datasheet. "MITSUBISHI inverter FR-F740 series.
Voltage level: three phase 400V.
Frequency converter capacity: 1.5KW.
The use of frequency converter motor is in order to speed, and reduce the starting current.
In order to produce a variable voltage and frequency, the device is the first power of the AC power conversion to DC (DC), the process is called rectification.
The direct current (DC) is transformed into alternating current (AC) and its scientific term is "inverter" (inverter).
General inverter is the DC power supply inverter for a certain fixed frequency and a certain voltage of the inverter.
For the inverter as the frequenncy adjustable, adjustable voltage inverter, we called the inverter FR-A740-37K-CHT datasheet PDF catalog FR-A740-37K-CHT PDF datasheet. "The output signal can open collector output inverter host standard.
Can be from the voltage output terminal (AMM0), the current output terminal (AM1) output analog signal (output frequency, output current, etc FR-A740-37K-CHT datasheet PDF catalog FR-A740-37K-CHT PDF datasheet. ).
Can be connected to the 20mA DC or 10V DC meter. "