Neutral-earth harmonic resonance

  • Thread starter luc4van
  • Start date
  • #1
4
0

Main Question or Discussion Point

When carrying out a system analysis During design stage (Variable speed drives connected to 3 transformers in parallel) is it a normal practise to check/measure neutral - earth harmonics, can this be predicted?
 

Answers and Replies

  • #2
215
1
The neutral path of power system is a suitable path for flowing of 3th harmonic current which can interfere to communication systems. One of known way for elimination this harmful effect is the trapping of 3th and other its multiplier harmonic in delta connection of converter transformers which can be predicted in mentioned VSD system.
For similar discussion you can refer to Transformer riddle No.5 from http://electrical-riddles.com
 

Related Threads on Neutral-earth harmonic resonance

  • Last Post
Replies
1
Views
2K
  • Last Post
2
Replies
33
Views
23K
  • Last Post
3
Replies
65
Views
13K
  • Last Post
Replies
2
Views
1K
  • Last Post
2
Replies
33
Views
37K
  • Last Post
Replies
20
Views
39K
  • Last Post
Replies
11
Views
19K
Replies
2
Views
2K
Replies
11
Views
3K
  • Last Post
Replies
19
Views
4K
Top