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Can we have 2 or 3 Reference signals for a Phase shifted or Level shifted PWM, or do we have single

farcane1991

May 30, 2021
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Do we have a single reference signal for the applied PSPWM in the enclosed paper (Reference signal = M1 of page 3 Fig. 4)? or all signals M1, M2, M3 are reference signals?
 

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Harald Kapp

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Nov 17, 2011
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I think it is obvious that M1, M2, ...Mn are separate signals. The text also states:
The voltages vdc2 to vdcn are controlled individually
through n-1 loops. Each voltage controller gives the
modulation index of one H-bridge module. After obtaining
n modulation indices, phase-shifted SPWM (PS-SPWM)
switching scheme is applied to control the switching devices
of each H-bridge.
As would be obviously required to individually control the H-bridge associated to the respective PV controller (cf. figure 1, page 3716).
 
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