TMS320F28379D: How to generate pulses for three level converter

Hridya I

Part Number: TMS320F28379D
Other Parts Discussed in Thread: TIDA-01606

Hi,

1. I would like to know on how to generate pulses with 2 carriers and one modulation signal for a three level converter?

2. Also, other query what i have is if CMPA>TBPRD, or CMPA<TBPRD in EPWM module, what is the PWM o/p going to be?

I would like to clamp PWM o/p to 0 when CMPA<TBPRD and to 1 if CMPA>TBPRD.

over 7 years ago

0 Manish Bhardwaj over 7 years ago

TI__Mastermind 43730 points

idya,

You will need to change the PWM behavior based on zero crossing. For example we implement the below on T Level inverter which is a 3 level inverter. In the below the AQCSFRC is used to mimic the behavior of the 2 carrier bases analog PWM generation technique.

0 Manish Bhardwaj over 7 years ago in reply to Manish Bhardwaj

TI__Mastermind 43730 points

You can refer to the TIDA-01606 example code.

For understanding on CMPAxA etc, i will recommend going through C2000 training

see section 7

0 MatthewPate over 7 years ago in reply to Manish Bhardwaj

TI__Guru* 86160 points

Hridya,

Checking back in to see if you have resolved your issue with Manish's response. I'm going to mark TI thinks resolved, but feel free to reply back in case you have additional questions for us.

Best,
Matthew

C2000™︎ microcontrollers

C2000 microcontrollers forum

TMS320F28379D: How to generate pulses for three level converter