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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
Summary of Contents for T300MVi MEDIUM VOLTAGE
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Page 85: ... 64 DRIVE INSTALLATION DRAWINGS cont d Frame G4P drive lifting and assembly ...
Page 86: ... 65 DRIVE INSTALLATION DRAWINGS cont d Frame G4P drive main cable installation ...
Page 87: ... 66 DRIVE INSTALLATION DRAWINGS cont d Frame G4P module lifting and installation D C B A ...
Page 89: ... 68 DRIVE INSTALLATION DRAWINGS cont d Frame H4P drive lifting and assembly ...
Page 90: ... 69 DRIVE INSTALLATION DRAWINGS cont d Frame H4P drive main cable installation ...
Page 91: ... 70 DRIVE INSTALLATION DRAWINGS cont d Frame H4P module lifting and installation ...