AN2531/D Motorola / Freescale Semiconductor, AN2531/D Datasheet - Page 6

• Manufacturer Part Number: AN2531/D
• Description: Standard Space Vector Modulation with Dead-Time Correction - XOR version TPU Function Set
• Manufacturer: Motorola / Freescale Semiconductor

AN2531/D
6
Standard SVM with Dead-Time Correction – XOR version (svmStdDtXor)
The TPU writes the parameter Sector, which indicates the current Stator
Reference Voltage Vector position in sector 1 to 6.
The following figures show the input Stator Reference Voltage Vector
components u
cycle ratios:
The following equations describe how the Space Vector Modulation PWM
signal high-times ht
calculated:
U
U
Freescale Semiconductor, Inc.
X
Y
Z
For More Information On This Product,
U
U
U
T
T
Figure 3. Standard Space Vector Modulation Technique
u
u
U
2
U
2
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á
and u
3
3
A
, ht
-0.5
-0.5
-0.5
-0.5
0.9
0.9
0.9
0.8
0.8
0.8
0.7
0.7
0.7
0.6
0.6
0.6
0.5
0.5
0.5
0.4
0.4
0.4
0.3
0.3
0.3
0.2
0.2
0.2
0.1
0.1
0.1
â
0.5
0.5
0.5
0.5
1
1
1
0
0
0
-1
-1
-1
-1
1
1
1
1
0
0
0
0
, corresponding sectors and output PWM signal duty
0
0
0
0
0
0
0
0
Sector 1 Sector 2 Sector 3 Sector 4 Sector 5 Sector 6
Sector 1 Sector 2 Sector 3 Sector 4 Sector 5 Sector 6
Sector 1 Sector 2 Sector 3 Sector 4 Sector 5 Sector 6
B
Components of the Stator Reference Voltage Vector
Components of the Stator Reference Voltage Vector
Components of the Stator Reference Voltage Vector
, ht
Standard Space Vector Modulation Technique
Standard Space Vector Modulation Technique
Standard Space Vector Modulation Technique
60
60
60
60
C
60
60
60
60
and transition times t
120
120
120
120
120
120
120
120
180
180
180
180
180
180
180
180
240
240
240
240
240
240
240
240
300
300
300
300
300
300
300
300
trans
Phase A
Phase A
Phase A
Phase A
Phase B
Phase B
Phase B
Phase B
Phase C
Phase C
Phase C
Phase C
alpha
alpha
alpha
beta
beta
beta
angle
angle
angle
angle
angle
angle
360
360
360
360
360
360
360
360
of each channel are
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