Sumários
Problem8 and Problem9
24 novembro 2015, 08:00 • Luis Marcelino Ferreira
Problem 8 (sketch and partial solution)
Problem 9 (solution)Transformers and neutrals
19 novembro 2015, 11:00 • Luis Marcelino Ferreira
Revision: given V1abc and V2abc, compute I12a
Do it in two ways: (1) using Idih and Vdih (and Zdih) formulas
(2) using Ibac and Vabc (and Zabc)
Transformers and neutrals
Neutral resistances and neutral reactances
Importance of neutral -- examples
Connections in zig-zag for making neutral reactances
Performance and importance of zig-zag reactances