Everything about HVDC - Explained by an Engineer - Introduction скачать в хорошем качестве

Everything about HVDC - Explained by an Engineer - Introduction

HVDC is powering some of the most ambitious energy projects on Earth — from interconnectors between countries to proposals linking entire continents. But why do we use DC instead of AC for these ultra-long connections? In this video, I break down how HVDC actually works — from the physics of AC vs DC, to the limitations of cables, and why effects like capacitive charging currents, the Ferranti effect, and skin effect make AC unsuitable for long-distance subsea transmission. We then dive into converter technology, explaining: How LCC (thyristor-based) systems operate How VSC (IGBT-based) systems build waveforms using modular multilevel converters (MMC) What submodules, capacitors, and valve stacks actually do Why thousands of semiconductors are used instead of just a few We’ll also compare LCC vs VSC, explore power control, black start capability, harmonics, ripple frequency, and why HVDC enables asynchronous interconnection between grids. By the end, you’ll understand: Why HVAC cables are limited to ~100 km How HVDC overcomes those limits Where each technology is used today — and what’s coming next If you’re interested in power systems, grid engineering, or the future of global energy infrastructure, this is everything you need to know for a moderately in depth overview and there's more videos to come so get subscribed! Links: Patreon: www.patreon.com/TheElectricBrit Website: www.electricbrit.co.uk Store: https://shop.electricbrit.co.uk/ Chapters: 0:00 Intro 2:36 History of DC 5:10 Physics Recap 5:53 Skin Effect 7:50 Capacitive Charging Currents 10:23 Ferranti Effect 11:33 Asynchronous Interconnection 13:51 Power Flows 14:56 Converter Configurations 16:30 Dynamic Power 17:00 LCC Explained 19:30 VSC Explained 23:03 LCC Bridges 25:55 Harmonics 27:22 12 Pulse Bridge 29:26 LCC vs VSC 33:55 Cost and Projects 36:30 Conclusion 37:46 Out Takes 41:20 Cat Takes Corrections: 9:25 In the formula, the letter V should actually be U, meaning RMS Voltage. V is the unit of measurement so I was inconsistent here in making the formula. f for frequency can also be substituted for ω for angular frequency.