Iron loss curve estimation

[HerrWitz]

Hi all,

I am recently calculating the iron loss in a permanent magnet synchronous machine with a speed of 24000 rpm (electrical frequency 800 Hz). However, the iron loss data from the data sheet is not sufficient since only frequency of 50 Hz, 100 Hz, 200 Hz, 400 Hz, 1000 Hz and 2500 Hz are given.

To calculate the iron loss, up to 13th harmonic (10400 Hz) has to be considered in this case. Since there is no prototype machine available, is there a way (e.g. curve fitting) to estimate the iron loss data in higher frequencies?

Thank you!

 

[Achy47]

Hello,

Thank you for sharing your question and interest in calculating iron loss in a permanent magnet synchronous machine. I understand that the data sheet you have only provides information up to 2500 Hz, while you need to consider up to the 13th harmonic (10400 Hz) for your calculations.

One option for estimating the iron loss data in higher frequencies is to use curve fitting techniques. This involves using mathematical models to approximate the data and fill in any missing values. However, this method may not always be accurate as it relies on assumptions and may not capture the true behavior of the material at higher frequencies.

Another approach is to use finite element analysis (FEA) software, which can simulate the behavior of the material at different frequencies. This method may provide more accurate results, but it requires expertise in using the software and may be time-consuming.

If possible, I would also suggest reaching out to the manufacturer of the permanent magnet synchronous machine for additional data or information on how to estimate the iron loss at higher frequencies. They may have conducted tests or simulations at higher frequencies and can provide more accurate data for your calculations.

I hope this information helps and wish you success in your calculations.