AN2528 Freescale Semiconductor / Motorola, AN2528 Datasheet - Page 5

• Manufacturer Part Number: AN2528
• Description: Standard Space Vector Modulation TPU Function Set
• Manufacturer: Freescale Semiconductor / Motorola

MOTOROLA
Standard Space Vector Modulation TPU Function Set (svmStd)
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
channel are calculated:
U
Sector:
U
Freescale Semiconductor, Inc.
X
Y
Z
For More Information On This Product,
U
U
U
T
T
Figure 2. Standard Space Vector Modulation Technique
u
u
U
2
U
2
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á
Ã1Ã
V.
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
YÃ12Ã
0
0
0
0
0
0
0
0
`Ã1Ã
Ã32Ã
B
IV.
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
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
C
60
60
60
60
60
60
60
60
and transition times t
YÃ3Ã
III.
120
120
120
120
120
120
120
120
180
180
180
180
180
180
180
180
YÃ12Ã
VI.
Ã1Ã
240
240
240
240
240
240
240
240
`Ã32Ã
300
300
300
300
300
300
300
300
YÃ3Ã
low-high
I.
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
Detailed Function Description
and t
Ã32Ã
II.
high-low
of each
AN2528/D
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