frequency converter造句怎么写

The theoretical circuit,gain and selectivity of the regenerative frequency converter;

Application of CROWBAR in AC frequency converter drive system for rolling mill

The testing system was mainly composed of PLC, MMI, frequency converter, approach switch and acceleration transducer.

The application of frequency converter in powder dryer system based on variable frequency speed control of powder inverter, powder ventilator and smoke ventilator are presented in the paper.

The principle of the frequency converter reaches, its function and its saving energy reconstruction were introduced and discussed.

The speeds of adhesive-binding& adhesive-wheel can get adjustable speed out of grade control by the frequency converter according to the need of arts& crafts.

Two-step drive device make the force-enduring reasonable, and the frequency converter control the motor, it is easier to adjust the speed of spindle.

The insulation class F or class H . The insulation of open-loop U/f condition of . structure has the adaptability to high carrie frequency voltage supplied by frequency converter .

The principle of in frequency converter using large high-voltage power electronic device IGBT was discussed. And the cause of fault was analyzed as well as the lesson should be learned.

As the result of simulation, it is pointed out that the converting point must be carefully chosen when corner folding modulation method or intermediate pulse displacement method is used to convert the output voltage waveform of high power frequency converter into square waveform.

Application of frequency converter on modern weaving machinery

Common fault analysis and preventive measures of frequency converter

With this technique, the effect of equivalent high switching frequency converter has been obtained with low switching frequency converter.

Application and study of frequency converter in energy saving technique of heating boilers;

Siemens PLC S7-200 as the control center, Anchuan F7 frequency converter as the implementation devices, it realizes changing frequency velocity modulation control for automatic washing machine.

Application of PLC in the speed control system of frequency converter in the main hoist of blast furnace;

These high frequencies correspond to the rotation speeds of centrifuges; America tightly controls the export of frequency converter drives able to operate at frequencies above 600 Hz.

At the same time, the automatic energy-saving mode frequency converter LG, can make the motor in the meet load torque requirements to minimum current operation, to reach better energy saving effect.

A design and test of 2cm up-frequency converter

A spinning machine, especially a ring spinning frame, includes at least one driver started via one frequency converter and one central control unit for starting the frequency converter.

The paner intrdue the application of frequency converter in improving crude oil Stabilization unit and it's operating situation.

It can be used in pipe installation buffer type check valve or pump motor use frequency converter and method of soft starter control to reduce the water hammer effect.

The frequency converter consists of main circuit and control circuit.

Based on the static characteristics of induction motor, this paper analyzes the braking function of general voltage vector controlled frequency converter.

Discussion of resuming automatic restart function while high voltage frequency converter is power off

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