Previous in Forum: Main Tie Main, redundant Bus tie breaker   Next in Forum: operation principle of motor
Close

Comments Format:






Change Mode
Close

Subscribe to Discussion:

CR4 allows you to "subscribe" to a discussion
so that you can be notified of new comments to
the discussion via email.

Close

Rating Vote:







Add Vote
2 comments
Rate Comments: Nested
Signode
Power-User

Join Date: Aug 2007
Location: Lahore
Posts: 369

How to configure the drive is 4 quadrants?

12/24/2009 12:38 AM

Dear Friends,

I have an old DC drive for 94KW for which I want to configure if it is a single quadrant drive or four quadrants? The drive has 6 thyrister modules and four control wires are coming out from each module. It seams like each module contains two thyristers and thus a 4 quadrants drive. Is there any other check list for which I can configure the drive? Actually I don't have sufficient experience with DC drives.

__________________
 Don't assume any thing, always check/ask and clear yourself
Register to Reply
Interested in this topic? By joining CR4 you can "subscribe" to
this discussion and receive notification when new comments are added.

"Almost" Good Answers:

Check out these comments that don't yet have enough votes to be "official" good answers and, if you agree with them, vote them!
marcot
Guru
Canada - Member - Specialized in power electronics

Join Date: Feb 2008
Location: Montreal, Canada.
Posts: 1372
Good Answers: 80
#1

Re: How to configure the drive is 4 quadrants?

12/26/2009 12:47 PM

The answer is NO you cannot make a real four quadrants drive with this.

A typical four quadrants drive would use 12 thyristors. It is basically two full bridges in opposite polarity. The two independent firing modules must be tightly controlled at the point where the current reverse from one bridge to the other.

But...

What you could do is use a reversing contactor to get a slow reversal when needed. The drive controls would probably need to be modified but it would work in a slower fashion.

__________________
 Experienced is earned, common sense is taught, both are rare essentials of life.
Register to Reply Score 1 for Good Answer
No more "Almost" Good Answers.
Signode
Power-User

Join Date: Aug 2007
Location: Lahore
Posts: 369
#2
In reply to #1

Re: How to configure the drive is 4 quadrants?

01/01/2010 4:26 AM

Thanks,

It means if a drive has 12 thyristers, it is 4 quadrant while if a drive has 6 thyristers, it is single quandrant.

Am I right?

Sory for my lack of basic knowledge.

__________________
 Don't assume any thing, always check/ask and clear yourself
Register to Reply
Register to Reply
Have a Different Question?
2 comments

"Almost" Good Answers:

Check out these comments that don't yet have enough votes to be "official" good answers and, if you agree with them, vote them!

Previous in Forum: Main Tie Main, redundant Bus tie breaker   Next in Forum: operation principle of motor
You might be interested in: DC Motor Drives, DC-DC Converter Chips, AC-DC Adapters

Advertisement

Got Something to Say?
Ask a Question
Start a Discussion

Search this Forum
Electrical Engineering:
Go

CR4 Sections
Aerospace
BioMech & BioMed
Chemical & Material Science
Civil Engineering
Communications & Electronics
Education and Engineering Careers
Electrical Engineering
General Discussion
Instrumentation
Manufacturing
Mechanical Engineering
New Technologies & Research
Software & Programming
Sustainable Engineering
Transportation

Site Directories
Forum Directory
Blog Directory
User Group Directory
RSS Feeds

CR4 Rules of Conduct
CR4 FAQ
Site Glossary

Who's Online (69 right now)
Show Members
Advertisement