User's Manual

www.ti.com
Φ=0°
CTR=zero
CTR=CMPB
X
En
SyncOut
Phase reg
Ext SyncIn
(optional)
EPWM1A
EPWM1B
SyncOut
Phase reg
CTR=CMPB
CTR=zero
X
En
EPWM2B
EPWM2A
Slave
Master
EPWM1A
EPWM1B
EPWM2A
EPWM2B EPWM3B
EPWM3A
VAB
VCD
VEF
3 phase motor
EPWM4B EPWM5B
VAB
EPWM4A
VCD
EPWM5A
EPWM6B
3 phase motor
VEF
EPWM6A
3 phase inverter #1
3 phase inverter #2
1
2
CTR=zero
CTR=CMPB
Phase reg
3
Slave
SyncOut
X
En
EPWM3B
EPWM3A
Phase reg
CTR=CMPB
CTR=zero
4
Slave
SyncOut
X
EPWM4A
EPWM4B
En
SyncOut
CTR=zero
CTR=CMPB
Phase reg
Phase reg
CTR=CMPB
CTR=zero
Slave
6
5
Slave
X
En
SyncIn
EPWM6B
EPWM6A
SyncOut
X
EPWM5A
EPWM5B
En
Φ=0°
Φ=0°
Φ=0°
Φ=0°
Φ=0°
SyncIn
SyncIn
SyncIn
SyncIn
SyncIn
Controlling Dual 3-Phase Inverters for Motors (ACI and PMSM)
Figure 3-9. Control of Dual 3-Phase Inverter Stages as Is Commonly Used in Motor Control
SPRU791D – November 2004 – Revised October 2007 Applications to Power Topologies 81
Submit Documentation Feedback