Medium Voltage Drive VFD 280KW 6.6KV HIVERT-Y 6.6/031

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Long lifetime


The DC bus capacitors provide an energy store and de-coupling buffer between the supply network and the load
side converter. The high value of the capacitors almost eliminates the voltage ripple and stabilizes the DC bus
voltage, suppressing disturbances caused by fluctuations of the load and supply side harmonics and switching
transients.Traditionally, the capacitors used for the DC bus have been of aluminium electrolytic type as the technology is mature and relatively low cost and also achieves a high energy density.

 

Disadvantages of electrolytic capacitors
However, electrolytic capacitors suffer from some disadvantages:
∙ Limited ability to handle large ripple current.
∙ Limited voltage rating and ability to handle voltage surges. It is necessary to connect capacitors in series and use voltage-sharing resistors, increasing system design complexity and reducing overall reliability.
∙ Limited lifetime.
∙ Unsuitability for long-term storage as spare parts.
∙ Failure modes may result in collateral damage to other components.

 

Advantages of metalized film capacitors
The RMVC 5100 uses metalized film capacitors which have the following advantages, despite having a lower power
density:
∙ Limited ability to handle large ripple current.
∙ Limited voltage rating and ability to handle voltage surges. It is necessary to connect capacitors in series and use
voltage-sharing resistors, increasing system design complexity and reducing overall reliability.
∙ Limited lifetime.
∙ Unsuitability for long-term storage as spare parts.
∙ Failure modes may result in collateral damage to other components.

.Medium Voltage Drive VFD 280KW 6.6KV HIVERT-Y 6.6/031

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Q:What is the single axis of the inverter and multi-axis applications
Inverter is mainly used for AC motor (asynchronous motor or synchronous motor) speed adjustment, is recognized as the AC motor the best and most promising speed control program, in addition to excellent speed performance, the inverter is also significant Energy-saving effect, is the enterprise technological transformation and product upgrading of the ideal speed control device. Since the introduction of China since the 80s of last century, the frequency converter as energy-saving applications and speed of process control more and more important automation equipment, has been rapid development and wide application.
Q:B2b frequency how to speed
How does changing the power frequency to change the speed of the motor? When the motor is connected to the power supply to drive the normal operation of the load, at this time to change the power frequency, such as the current frequency down, the motor armature rotating magnetic field speed will decline, the rotor conductor cutting magnetic field speed decreases, turn from the induced potential , The rotor current decreases, the torque decreases, the load on the shaft does not change, the torque will be less than the load resistance torque, the motor rotor speed decreases, the rotor conductor cutting the magnetic field line speed increases, the rotor induced potential increases, the rotor current increases, The torque rises until it is equal to the load resistance torque, and the speed is smaller than the original. After stabilizing the work, the torque of the motor is the same as that of the original. (The motor torque is the same as the load torque, the load is constant and the motor torque is not changed)
Q:Can the four motors be tuned to 2900 rpm?
You have to look at what is the load, and look at the motor bearing can not bear 2900 turn, if the line, then under normal circumstances are possible. Only to the speed up to the motor rated speed above, the motor output torque is reduced.
Q:Inverter 0.2KW, the motor speed requirements down to 4 turn, the motor pole 4 pole. Can the drive drive the motor?
Can, but this is a test product, the application does not try!
Q:Who knows how the inverter is calculated?
Quadrupole motor synchronous speed is: 1500 r / min, but the actual motor speed will be more than 14 turn.
Q:My laptop can not use the power adapter, and can only use the battery, how is it ah,
Depending on your question may be the problem that the laptop's internal lines may be short-circuited 1, you can go to the video online to find the same type of machine disassemble video and then repair their own 2, get to the maintenance of the place to get on nothing
Q:Will the asynchronous motor pole change the number of speed control can also be combined with the frequency converter
As you said the asynchronous motor after a very logarithmic change can be achieved on the speed of the "coarse tune", and then use the inverter is equivalent to add a "fine tune" device, but it seems a bit expensive, but to To see what you are on the occasion of the worthless.
Q:Lenovo g450 laptop power adapter specifications is what?
Lenovo G450 power adapter Model: ADP-90RH B LENOVO P / N: 36001681 Input: 100-240V ~ 1.5A 50-60Hz Output: 19V $ 4.74
Q:Computer frequency changer to do cd frequency changer how points positive and negative
. In this circuit, the total capacitance is 6500 microfarads, the voltage is doubled.
Q:My motor is a low frequency 8 pole motor, about 80W. I would like to choose a frequency converter
Poor match, the program is unreasonable Current 1.5A, choose a single-phase 220v power supply, 370-500w inverter it

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