Is it possible to find the equations of certain number of harmonics (Ex : 3rd, 5th, … 17th) in Single Phase Full Bridge Inverter theoretically, using the characteristics of the components of the circuit ? if yes, How?, i need some documentation about that.
Harmonic’s equations within Single Phase Full Bridge Inverter
h-bridgeharmonicsinverter
Related Solutions
Answering this question for your specific case with parts as they are now will get it closed as being too localized, so this is a more general community wiki answer.
The first thing that you need to determine is why you need the same level of integration that you currently have. Could you get by with (2) H-bridges, or (4) half-bridges? This will open up your options immensely.
Second, can you use discrete transistors with drivers? For low-voltage/low-current applications this isn't really needed, but if you needed higher performance, this is crucial.
Other related drivers you could look at to replace H-bridge drivers are synchronous-drivers (often used with a half-bridge), which can be much cheaper and offer better performance, but have some limitations.
As far as manufacturers to peruse:
- Linear Technology
- Half/full/3-phase drivers
- Good selection of some high-performance parts (low Iq, wide voltage ranges, etc)
- Some parts can be pricey
- Diodes Inc (Zetex)
- Has a good variety of lower-power transistor packages with various combinations, e.g. Dual N, N/P, 4x N, Dual N/Dual P (H-bridge).
- International Rectifier
- High power transistors
- High voltage bridge drivers (100-600 V)
- ST Microelectronics
- High power transistors
- Highly integrated motor controllers with drivers and logic, however these are often very specific for door zone applications, so you might get one high-power H-bridge, two lower-power H-bridges, and some high-side drivers, and while they're pretty economical together, you're paying for it all.
Conceptually, what you seem to be proposing seems to be something like passing the entire current of a branch of the grid through a system that extracts specific harmonic currents and injects them back into the grid with a different phase relationship to the fundamental to cancel harmonics originating in another branch. Passing all of the current of a branch through any system would seem to be less efficient than some kind of active or passive filter that would handle only one or several specific harmonics.
A similar concept would be to have the major harmonic generating sources vary their waveform creation strategy in a way that would tend to cancel each other. I found a paper related to that, but I made a mistake in trying to save it. I will try to find it again and post a link later.
Added reference information re above:
Armstrong, Matthew; Atkinson, D.J.; Johnson, C.M.; Abeyasekera, T.D., "Low order harmonic cancellation in a grid connected multiple inverter system via current control parameter randomization," in Power Electronics, IEEE Transactions on , vol.20, no.4, pp.885-892, July 2005 doi: 10.1109/TPEL.2005.850949 Abstract: In grid connected multiple inverter systems, it is normal to synchronize the output current of each inverter to the common network voltage. Any current controller deficiencies, which result in low order harmonics, are also synchronized to the common network voltage. As a result the harmonics produced by individual converters show a high degree of correlation and tend to be additive. Each controller can be tuned to achieve a different harmonic profile so that harmonic cancellation can take place in the overall system, thus reducing the net current total harmonic distortion level. However, inter-inverter communication is required. This paper presents experimental results demonstrating an alternative approach, which is to arrange for the tuning within each inverter to be adjusted automatically with a random component. This results in a harmonic output spectrum that varies with time, but is uncorrelated with the harmonic spectrum of any other inverter in the system. The net harmonics from all the inverters undergo a degree of cancellation and the overall system yields a net improvement in power quality. Link
Here is a newer article by some of the same authors as the article you linked:
Here is an article about measuring harmonics including phase information:
Best Answer
I provided a link to a textbook chapter in my answer to your previous question. This question seems to require an answer with that kind of detail, not something that can be provided here. You may be able to find detailed material online the way I found the material for which I sent the link. Use the advanced search features of Google. To find academic material search ".edu" sites. Look at the material in Wikipedia. Note that Wikipedia articles have a lot of links to other Wikipedia articles and to material outside of Wikipedia.
Th documentation that I have is in three hard-copy textbooks from 1962, 1964 and 1994. There are certainly more recent books that can be found in libraries.