Other Parts Discussed in Thread: MOTORWARE
Hello,
I would like to ask a question about InstaSpin
Lab 10a,Overmodulation.
If we would like to maximize the output duty,
changes the constant value "USER_MAX_VS_MAG_PU" to 2/3(=0.667) on user.h.
And in addition, I think the following value have to be changed:
Vlimit value of Svgen module.
At default, its value is calculated at "setup svgen current" process,
and the equation is:
Vlimit = 0.5-(2.0*minWidth_microseconds*USER_PWM_FREQ_kHz*0.001)
minWidth_microseconds = 2.0 (default),
and so, the Vlimit value of Svgen is lower than 0.5.
And this value is used at the function "SVGENCURRENT_compPwmData" in
mainISR,and I think the maximum value is constrained by that value.
so I think , if we would like to maximize the output duty,
the Vlimit value of Svgen module has to be set to 2/3(=0.667), isn't it ?
What do you think about this ?
Regards,
Hiroyasu Matsubara