Low cost Microcontroller for a BLDC Motor drive with FOC drive mode

Mohd Ashad Khan

Other Parts Discussed in Thread: TMS320F280025C, C2000WARE-MOTORCONTROL-SDK

Question1
I am looking for a low price microcontroller that support FOC mode for a BLDC Motor driver

BLDC Motor Specifications are as below
Battery Voltage = 72V
Control Mode = Field Oriented Control
Output Power =5.5KW
Peak Power = 8KW
Output Frequency Range =0- 600Hz

Question2 .What is the microcontroller frequency I have to consider to drive this motor. Is 60Hz frequency controller is enough ?

over 4 years ago

0 ChrisClearman over 4 years ago

TI__Guru** 119500 points

Any C2000 device can be used to do FOC control.

Our lowest cost series in production is F28002x, you can see the superset device TMS320F280025C

Example projects are supported through C2000WARE-MOTORCONTROL-SDK

FOC control of this type of motor will likely take <20% of the processing for a 100 MHz MCU. It depends on if you use sensorless techniques and how fast you update the current loop.

0 Mohd Ashad Khan over 4 years ago in reply to ChrisClearman

Prodigy 30 points

I am using a sensorless motor and speed of the motor will go upto 110km/hr .Does it make any change .

0 ChrisClearman over 4 years ago in reply to Mohd Ashad Khan

TI__Guru** 119500 points

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Low cost Microcontroller for a BLDC Motor drive with FOC drive mode