Skip to player
Skip to main content
Search
Connect
Watch fullscreen
Like
Bookmark
Share
More
Add to Playlist
Report
Working Principal of Inverter Circuit
3D Animation Tech
Follow
1 year ago
#inverter
#inverters
Working Principal of Inverter Circuit #inverter #inverters
Category
📚
Learning
Transcript
Display full video transcript
00:00
Today, I will introduce the working principle of an inverter to you.
00:03
The function of an inverter is to convert DC power into AC power.
00:08
Let's first look at how an AC square wave signal is generated.
00:12
As shown in the video, the circuit includes four switches, a power supply, and an output load.
00:18
This inverter is called a full bridge inverter.
00:21
When Q1 and Q4 are closed, it outputs positive voltage to the load.
00:26
When Q2 and Q3 are closed, it outputs negative voltage to the load.
00:31
In actual control, the four switches use four transistors Q1 and Q4 to work simultaneously,
00:38
Q2 and Q3.
00:40
Two groups work simultaneously and alternately.
00:42
This inverter outputs an AC square wave signal.
00:46
In practical applications, it cannot smoothly control the torque output of the motor.
00:51
How is the sine wave controlled?
00:53
The circuit used to realize the sine wave is called the pulse modulation circuit.
00:57
We divide the sine wave type into multiple small segments.
01:01
Each small segment is controlled by a different duty cycle,
01:04
so that the average voltage of each segment is a different point.
01:07
The higher the voltage, the greater the duty cycle.
01:10
How is it implemented in the actual circuit?
01:13
PWM modulation requires two comparators.
01:16
The two input terminals of the comparator, one is a normal sine wave signal,
01:20
and the other is a carrier signal.
01:22
The carrier signal usually uses a triangle wave.
01:25
One comparator uses a normal sine wave and the other comparator uses an inverted sine wave.
01:30
The first comparator controls Q1 and Q2.
01:33
The Q1 and Q2 signals are reverse.
01:36
Q1 is high potential and Q2 is low potential.
01:39
This ensures that the two switching tubes work alternately.
01:43
The second comparator controls Q3 and Q4.
01:46
The control logic is the same.
01:47
The working logic of the comparator is simple.
01:50
When the sinusoidal signal is higher than the triangle wave,
01:53
it outputs signal 1, otherwise it outputs signal 0.
01:56
So we can see that the higher the voltage of the sinusoidal signal,
02:00
the greater the duty cycle of the output.
02:02
The two comparators use different signals as shown in the video.
02:06
The voltage on both sides is the difference between the two signals
02:09
and the waveform shown is obtained.
02:12
In this way, a smooth sine wave signal can be obtained.
02:16
The higher the frequency of the triangular wave, the smoother the signal obtained.
02:20
Hope you understand this.
02:21
Like, comment, share and subscribe.
Be the first to comment
Add your comment
Recommended
16:18
|
Up next
Power Factor Explained – Your Electricity Bill Money Drain (Reactive Power)
TheEngineeringMindset
11 months ago
18:35
How Electricity Works - for visual learners
TheEngineeringMindset
1 year ago
15:22
Variable Frequency Drives Explained - VFD Basics IGBT inverter
TheEngineeringMindset
2 years ago
1:58
HELIONIX
Airbus Helicopters
7 years ago
0:59
H145 Offshore Demo Wilhemshaven
Airbus Helicopters
7 years ago
2:14
H Generation
Airbus Helicopters
7 years ago
0:47
How a Lie Detector Detects Lies? Working of Lie Detector Explained with 3D Animation
3D Animation Tech
1 year ago
1:39
How Air Purifier Purify Impurities in the Air and Make People Feel Refreshed
3D Animation Tech
1 year ago
1:57
How Electric Cars Work? Working of Electric Cars Explained with 3D Animation
3D Animation Tech
1 year ago
2:21
CVT is industrial waste?
3D Animation Tech
1 year ago
1:20
The Coolest way to Generate Electricity in the World
3D Animation Tech
1 year ago
1:16
What is Rotor Sails? Rotor Sails Explained
3D Animation Tech
1 year ago
0:47
How Ceiling Fan Works? Working of Ceiling fans Explained with 3D Animation
3D Animation Tech
1 year ago
0:40
How Car Airbags Works? Working of Airbags Explained with 3D Animation
3D Animation Tech
1 year ago
1:26
Fleming Left and Right Hand Rule...
3D Animation Tech
1 year ago
0:44
Whale Fish Could Explode
3D Animation Tech
1 year ago
0:51
How Electronic Hearing Device Work... Cochlear Implant
3D Animation Tech
1 year ago
0:51
What Happened if Cable Car Fall
3D Animation Tech
1 year ago
0:39
Why laptops need to be taken out separately during airport security checks
3D Animation Tech
1 year ago
0:47
Why Refrigerators Explode
3D Animation Tech
1 year ago
0:48
Laser Speed Detection.. Most advanced Method to Detect Speeds
3D Animation Tech
1 year ago
0:48
Speed Bumps on the Roads
3D Animation Tech
1 year ago
1:04
Electric Quiz... Electrical Questions and Answers
3D Animation Tech
1 year ago
0:54
Perfect Solutions for Some Biggest Fear
3D Animation Tech
1 year ago
0:41
what does it feel like to be struck by lightning
3D Animation Tech
1 year ago
Be the first to comment