AMC131M03: Question about Typical application in datasheet

AnBer

Part Number: AMC131M03

Dear AMC131xxx Team,

Could you please help wizth the below:

The below Fig 9-4 is showing a typical application for current sensing on motor:
https://www.ti.com/document-viewer/AMC131M03/datasheet/GUID-1CE9AE9F-29E1-487D-8F31-578037C3E462#TITLE-SBAS994SBAS590477

A star topology and associated sensing points are shown on the motor/generator in order to read the voltage of phase_A.
However, star point taps are not the standard for this. The phase voltages are usually measured e.g. via phase_A and phase_B and converted accordingly.
Why would a star topology and associated sensing points be needed instead?

Thanks in advance,

over 2 years ago

0 Dale Li over 2 years ago

TI__Mastermind 46145 points

Hi AnBer,

The Fig 9-4 is a typical block diagram for metering application, not for motor drive application.

Regards,

Dale

0 AnBer over 2 years ago in reply to Dale Li

TI__Mastermind 30295 points

Hi Dale,

Sorry the question was not clear.
Can AMC131M03 sense as well a standard 3 Phases Network (ie L1-L2-L3 only, no N, PE nor PEN)?
Or is a N, PE or PEN reference always required?

Thanks in advance,

0 Dale Li over 2 years ago in reply to AnBer

TI__Mastermind 46145 points

Hi AnBer,

Yes, it can be used in a system without the neutral line.

Regards,

Dale

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AMC131M03: Question about Typical application in datasheet