Toshiba T300MVi MEDIUM VOLTAGE - Circuit Operation - Output Voltage References

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D-axis voltage
reference
ED_R
Q-axis voltage
reference
ED_R
Magnetic flux
location
Q0CMP_V
D
Q
X=DCos(Theta)-QSin(Theta)
Y=DSin(Theta)-QCos(Theta)
U=X
W=-[(X/2)+Sqrt(3/2)Y]
V=-(U+W)
Theta
PWM
Controller
Two to three phase convertor
VU_REF
VV_REF
VW_REF
GSD
OLBs
&
IGBTs
CIRCUIT OPERATION (cont’d)
Output Voltage References
(1) Output voltage references
ED_R and EQ_R (the results of the current regulator) and the flux angle are input into a two to three
phase conversion block. This block outputs the phase voltage references to the PWM (pulse width
modulation) controller.
(2) PWM control
The PWM control section outputs gate pulse signals to the gate board based on the voltage
reference of each phase.
(3) Gate Signal Distribution board (GSD)
The GSD board receives the gate signals from the control board and sends them to the individual
power modules.
Voltage Reference