Characteristics of Harmonics on DC Line - Harmonics - High Voltage Direct Current Transmission

TL;DR

Learn about characteristic harmonics on the DC side, including pulse number, assumptions, Fourier series, and harmonic voltage expressions.

Transcript

hello everyone welcome to ekeeda platform and this is raven jangor here your electrical faculty and in this video i'm going to talk about the characteristic harmonics on the dc site so we will start with some of the points which are actually listed here and uh denoting the characteristic harmonics on the dc side so we will start with the first poin... Read More

Key Insights

• 💗 Pulse numbers define characteristic harmonics in converters.
• 🦻 Assumptions like balanced supply and constant current aid in harmonic analysis.
• ❓ Fourier series converts waveforms to the frequency domain.
• 😑 Harmonic voltage expressions change with harmonic number.
• 😒 The Fourier series uses trigonometric functions for representation.
• ✋ Harmonic magnitudes decrease for higher order harmonics.
• 💗 Harmonics vary with commutation angle and pulse numbers.

Questions & Answers

Q: How do pulse numbers in converters relate to characteristic harmonics on the DC side?

Pulse numbers determine the order of harmonics generated on the DC side, following the formula np ± 1 where p is the pulse number.

Q: What assumptions are made in analyzing characteristic harmonics?

Assumptions include balanced AC supply, constant DC current, and constant commutation reactance for easy calculations and manipulations.

Q: How does the Fourier series help in understanding harmonics content?

Fourier series converts signals to the frequency domain, representing harmonics contained in waveforms through trigonometric functions.

Q: How do harmonic voltage expressions vary with harmonic number?

Harmonic voltage expressions, like vho, change with harmonic number, with magnitudes decreasing for higher order harmonics on the DC side.

Summary & Key Takeaways

• Characteristic harmonics depend on pulse number in converters for generating harmonics on the DC side.

• Assumptions include balanced AC supply, constant DC current, and constant commutation reactance.

• Fourier series converts signals to frequency domain, while harmonic voltage expressions vary with harmonic number.