STDES-30KWVRECT Vienna Rectifier AC-DC Conversion

[balu1997]

Hello all,

In the STDES-30KWVRECT Vienna Rectifier power circuit, 

1. Relation between Q1 and Q2 switching pulses are IN-PHASE, likewise I want to know, How Q1 and Q3 switching pulses are related ?

2. What PWM technique is used to generate switching pulses for Vienna Rectifier  STDES-30KWVRECT ?

[RhSilicon]

Unfortunately ST seems to try to hide some things. But since this project is an implementation of the "Vienna rectifier", the concepts can be found in other sources:

The Vienna Rectifier is a pulse-width modulation rectifier, invented in 1993 by Johann W. Kolar.

https://en.wikipedia.org/wiki/Vienna_rectifier

Another project that seems to have a lot more reference material is this one:

Description
The Vienna rectifier power topology is used in high-power, three-phase power factor correction applications such as offboard electric vehicle (EV) chargers and telecom rectifiers. Control design of the rectifier can be complex. This TI Design illustrates a method to control the power stage using C2000™ microcontroller (MCU). The hardware and software available with this design helps accelerate the time to market.

https://www.ti.com/tool/TIDM-1000

ST Material:

https://www.st.com/en/embedded-software/stsw-30kwvrect.html

[balu1997]

Thanks for the reply.

But,

we need answer to the mentioned doubt for our implementation and it is appreciable,

Relation between Q1 and Q2 switching pulses are IN-PHASE, likewise I want to know, How Q1 and Q3 switching pulses are related ?