TMS320F28376D: space vector modulation

Kurumi Hasegawa

Part Number: TMS320F28376D
Other Parts Discussed in Thread: C2000WARE, CONTROLSUITE

Hi team,

Is it possible to control motors by SVM (space vector modulation) using TMS320F28376D?

If yes, then do we have library or functions for SVM? Also, is there any restrictions (such as output pin must be configured as EPWM) ?

Best regards,

Kurumi

over 2 years ago

0 Santosh Jha over 2 years ago

TI__Guru 50611 points

Hi,

I am forwarding the thread to expert. Please expect response by Monday.

Regards, Santosh

0 Yanming Luo over 2 years ago in reply to Santosh Jha

TI__Guru** 116490 points

SVM (space vector modulation) can be implemented on all of the C2000 controllers including TMS320F28376D.

You can find some of the implementation examples with F2837x for a motor control in motor control SDK as below.

\ti\c2000\C2000Ware_MotorControl_SDK_<version>\solutions\\boostxl_3phganinv\f2837x\

The MotorControl SDK is available for download from https://www.ti.com/tool/C2000WARE-MOTORCONTROL-SDK. The SDK is also available online via the TI Resource Explorer for C2000 MC SDK.

0 Kurumi Hasegawa over 2 years ago in reply to Yanming Luo

TI__Expert 7991 points

Hi,

Thank you for the input.

So, I believe there is no restrictions on both HW/SW when implementing SVM, is my understanding correct?

0 Yanming Luo over 2 years ago in reply to Kurumi Hasegawa

TI__Guru** 116490 points

Correct. It's software method that is not dependent on the H/W.

0 Kurumi Hasegawa over 2 years ago in reply to Yanming Luo

TI__Expert 7991 points

Hi Luo,

Thank you for your confirmation. There is an additional question from the customer. I send you email offline, please check the mailbox.

Best regards,

Kurumi

0 Yanming Luo over 2 years ago in reply to Kurumi Hasegawa

TI__Guru** 116490 points

If the question is not sensitive to customer's product, please keep using E2E for any technical questions. Thanks!

0 Kurumi Hasegawa over 2 years ago in reply to Yanming Luo

TI__Expert 7991 points

OK, I'm copying the same message here.

For the sample code, we are able to find below line inside fcl_cpu_code_dm.c (Motor Control SDK).

#define FCL_SVGEN_PWM_PDATE_MACRO()

But we cannot find how it works, or what input/output are. Would you please provide additional information for the MACRO, such as how it works and how the input/output data are defined?

0 Yanming Luo over 2 years ago in reply to Kurumi Hasegawa

TI__Guru** 116490 points

As shown in the codes in fcl_cpu_code.c files, the marco function calculates the the PWM duty that is similar as SVGEN function in controlSUITE or the other examples in motor control SDK, just optimize the codes to reduce the execution time.

The inputs are the Valpha and Vbeta from the FOC loop, and the outputs are the value of the CMPA register. Just need to refer to the example to call this marco that doesn't need to change for any motors.

0 Kurumi Hasegawa over 2 years ago in reply to Yanming Luo

TI__Expert 7991 points

Thank you for additional info.

Yanming Luo said:
and the outputs are the value of the CMPA register.

-> Is it OK to assign the outputs to GPIO ports?

Best regards,

Kurumi

0 Yanming Luo over 2 years ago in reply to Kurumi Hasegawa

TI__Guru** 116490 points

Kurumi Hasegawa said:
-> Is it OK to assign the outputs to GPIO ports?

You need to use the GPIO that can support the EWPM output, not any GPIOs.

If you haven't had a chance to look at the workshop material, I think this will help demystify some of the terminology and architecture, and learn about C2000 MCU to get started developing as well.

C2000 Five Minute Overview

C2000 Academy