A single-phase full-bridge DC / AC inverter is supplied with a direct voltage of 400 V and modulated with a "voltage cancellation switching scheme" as shown below. Calculate the angle ẞ that cancels the third harmonic in the output voltage.
A single-phase full-bridge DC / AC inverter is supplied with a direct voltage of 400 V and modulated with a "voltage cancellation switching scheme" as shown below. Calculate the angle ẞ that cancels the third harmonic in the output voltage.
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![Electrical Engineering
A single-phase full-bridge DC / AC inverter is supplied with a direct voltage of 400 V and modulated
with a "voltage cancellation switching scheme" as shown below. Calculate the angle ẞ that cancels
the third harmonic in the output voltage.
VAN
DA+
DB+
B
UBN
IL.....
1.0
0.8
0.6
0.4
0.2
5th
TA-
7th
4
DA-
(a)
N
TB-
Total harmonic
distortion
3rd
0
(c)
Answer alternatives:
a) 0°
b) 90°
c) 30°
d) 60°
e) 45°
Fundamental
Da-
120
180
ak
180
(180-a)
8.
180
(b)
(180
tod
(180-a)
- (90-2)*](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F0998b6fe-dfa8-474f-9c11-59e2a9ee4278%2F7db54e83-26ce-481b-a54b-854b9bf3683d%2Fxb8jio_processed.jpeg&w=3840&q=75)
Transcribed Image Text:Electrical Engineering
A single-phase full-bridge DC / AC inverter is supplied with a direct voltage of 400 V and modulated
with a "voltage cancellation switching scheme" as shown below. Calculate the angle ẞ that cancels
the third harmonic in the output voltage.
VAN
DA+
DB+
B
UBN
IL.....
1.0
0.8
0.6
0.4
0.2
5th
TA-
7th
4
DA-
(a)
N
TB-
Total harmonic
distortion
3rd
0
(c)
Answer alternatives:
a) 0°
b) 90°
c) 30°
d) 60°
e) 45°
Fundamental
Da-
120
180
ak
180
(180-a)
8.
180
(b)
(180
tod
(180-a)
- (90-2)*
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