A 3-phase full-bridge LCC inverter connected to AC system with rated voltage Vs=380kV, fs=50Hz, source inductance of Ls=120mH. And the rated DC power is 1000MW, the extinguish angle γ must be kept at 15°: a. Find the Short Circuit Ratio (SCR) and analysis the strength of the feed-in system; b. The DC current; c. The DC voltage; d. The commutating duration angle μ. e. The firing angle α.
Answers
Explanation:
coarse cereals has fallen, from 30 per cent in 1960 to 16 per cent by the year 2000. Moreover, only 12 per cent of the area under coarse cereals gets irrigation facilities, as against 86 per cent of wheat, 93 per cent of sugarcane and 51 per cent of rice. The latter two consume more water and contribute to desertification in semi-arid regions. 4. Higher levels of crop diversity are necessary for more s
Answer:
Power Electronics and Drives ≫ Inverters ≫ Three Phase Bridge Inverters ≫ Three Phase 120 Degree Mode VSI
Three Phase 120 Degree Mode VSI MCQ Quiz - Objective Question with Answer for Three Phase 120 Degree Mode VSI - Download Free PDF

Question 1:
A three-phase voltage source inverter with ideal devices operating in 120° conduction mode is feeding a balanced star-connected resistive load. The DC voltage input is Vdc. The peak of the fundamental component of the line voltage is
Options:
Correct Answer: Option 3 (Solution Below)
Solution:
The Fourier analysis of phase voltage.
Rms value of fundamental phase voltage is,
Rms value of fundamental line voltage
Peak value of fundamental line voltage