topic Re: SRM motor control with hall sensor in Kinetis Microcontrollers

SRM motor control with hall sensor

Kaarthi — Tue, 12 Jan 2021 11:36:44 GMT

Hi,

I am using MKV30F128 micro controller for controlling 3 phase SRM motor with hall sensor feedback for position measurement. I am able to rotate the motor in no load. In load the over current fault occurs even with low load. In no load also, the 3 phase currents are not equal. Anyone having experience with SRM motor control, kindly help me to solve this problem.

Note: feedback - magnet disc is attached with shaft and hall sensor is placed against it.

Re: SRM motor control with hall sensor

xiangjun_rong — Thu, 14 Jan 2021 08:04:53 GMT

Hi, kaarthi,

I think it is reasonable that phase current is high when you connect the load. Can you adjust the peak current threshold so that the current fault does not happen.

Pls go to the link and download DRM100.pdf for the phase current waveform

https://community.nxp.com/t5/NXP-Designs-Knowledge-Base/RDDSCSHSSR-Sensorless-High-Speed-SR-Motor-Drive-for-Vacuum/ta-p/1115181

XiangJun Rong