TMS320F28335: SINE PWM generation with the help of MATLAB 2015b and DSP TMS320F28335

Hello,
I am writing to let you know that a C2000 team member has been assigned to this post and should be answering shortly.

Regards
Baskaran

Thank you so much.

The method is right. Use the GPIO which support ePWM module (like GPIO0~5), calculate the pwm period and duty based the frequency of sine waveform, the duty is set by the compare register of ePWM.

Thanks for replying.

I do not understand with duty cycle because in Sine PWM , duty cycle will not be a constant value, it varies.

I am attaching all files of my model which i have made in matlab simulink. Please see the attachments.

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In the solver setting,I have chosen fixed step method with 5us time step. When i give less time step like 0.1us than it does not give pulses on selected gpio pins , it gives noisy signal. Please tell me about solver setting and step size as my triangular wave switching frequency is 20 KHz. 

Based on that model, can you please send me your model of Sine PWM. I will be very thank full to you. I have to complete my project of an inverter. 

The maximum step size to have a correct result is:

step size = (1/3*freq) where freq is the maximum frequency you're using in your sine generator blocks. 

The 1usec is the minimum solver you can select to iterate your model, you can't go beyond that with that hardware and clock cycle.

Regards,

Thanks for replying. 

I understood the solver things. Can we get same Sine PWM by some other arrangement. Can we use ePWM block ?