Inverter/IGBT-Voltage Conversion Factor-How to Obtain/Calculate

zimiaoxinghan

Inverter/IGBT-Voltage Conversion Factor-How to Obtain/Calculate [Copy link]

Hello experts, when I was looking at the data post, I saw that the inverter has an important parameter---voltage conversion coefficient. For IGBT, does it need to be calculated or is there a description of this parameter in the IGBT manual? Please help me, thank you!!!

maychang

"When checking the data sheet, I saw that the inverter has an important parameter." It is recommended to post that "data sheet".

zimiaoxinghan

maychang posted on 2018-7-3 17:39 "When I was looking at the data post, I saw that the inverter has an important parameter." I suggest you post that "data post".

Sorry, I didn't see it on our forum. If you know about it, you might as well explain the parameter.

maychang

It is precisely because we don’t know the “voltage conversion coefficient” of IGBT that we suggest posting that “information”.

qwqwqw2088

IGBT also has this "voltage conversion coefficient"? I suggest the original poster to post a screenshot to show if there is any misunderstanding

zimiaoxinghan

qwqwqw2088 posted on 2018-7-3 22:04 Does IGBT have this "voltage conversion coefficient"? I suggest the OP take a screenshot and post it to see if there is any misunderstanding.

Hello, moderator. After seeing this message, I have questions about the parameters involved. I would appreciate it if you could explain it to me or ask other experts to answer it. Thank you.

qwqwqw2088

zimiaoxinghan posted on 2018-7-5 08:13 Hello moderator, after seeing this message, I have some questions about the parameters involved. I would like to ask the moderator to explain or ask other experts to answer. I would be very grateful. ...

I have never heard of the voltage conversion coefficient. Generally, the requirements of the inverter for the power supply mainly include input power supply voltage, frequency, allowable voltage fluctuation range, allowable voltage imbalance and allowable frequency fluctuation range.

qwqwqw2088

The parameter of the coefficient is the relationship between the output frequency and output voltage of the inverter, called V/F, which is the ratio of output voltage to frequency within the variable frequency range, but this is not what the original poster is talking about. The input voltage index of the inverter is about the number of phases of the input power supply, such as three-phase, 380V, +10%~15%, phase imbalance ≤2%, 50×(1±5%)Hz; the allowable voltage fluctuation range and the allowable frequency fluctuation range are the allowable fluctuation range of the rated input voltage amplitude and frequency. Some inverters also give a range of allowable input voltage for the power supply voltage index, such as 200~240V and 380~480V.

zimiaoxinghan

qwqwqw2088 posted on 2018-7-5 15:55 The parameter of the coefficient is the relationship between the output frequency and output voltage of the inverter, called V/F, which is the output voltage within the variable frequency range...

Thank you very much for the moderator's answer. It may be that the message description is inappropriate. I will check it again.