Previous in Forum: Distribution Transformer - Maximum Safe Working Temperature   Next in Forum: hand dryers with radio and tv interference suppressor
Close
Close
Close
4 comments
Rate Comments: Nested
Member

Join Date: Jan 2009
Location: Palestine
Posts: 6

Variable Frequency Drive (VFD)

02/23/2009 5:20 AM

How to build and design a VFD

the application is to drive motor and controll the speed refering to the load with spped feedback signal only.

no need for other options

Register to Reply
Interested in this topic? By joining CR4 you can "subscribe" to
this discussion and receive notification when new comments are added.
Power-User
Engineering Fields - Electrical Engineering - Not so new Member Popular Science - Weaponology - New Member Hobbies - Fishing - New Member, old hobby.

Join Date: Nov 2008
Location: Windhoek, Namibia, South west africa
Posts: 410
Good Answers: 23
#1

Re: Variable Frequency Drive

02/23/2009 6:10 AM

good day,

Do you want to design a VFD or go about hooking one up with this specific application?

__________________
tHe days of good inglisH haz wented.
Register to Reply
Member

Join Date: Jan 2009
Location: Palestine
Posts: 6
#2
In reply to #1

Re: Variable Frequency Drive

02/23/2009 4:58 PM

both,

Register to Reply
Guru
Canada - Member - Specialized in power electronics

Join Date: Feb 2008
Location: Montreal, Canada.
Posts: 1372
Good Answers: 80
#3

Re: Variable Frequency Drive (VFD)

02/24/2009 8:09 AM

The fastest way is to hire somebody who's done it before.

Alternatively, there are university courses and books that can help you. This is not a weekend project, even if you're already a power electronics engineer...

You can start by using pre-assembled modules for the power electronics and for the DSP boards. This will allow you to concentrate on the software. The IEEE as many paper relating to the control strategies. You could also license sections of software from various OEM. Check on the Internet you will find some module suppliers like Powerex. Some of these modules come equipped with gate driver's and power supplies. All you need to do is plug in your DSP board...

Even with the above, expect two or three years of development before having something that looks like product. Then, another two or three years of product maturation where you will get the application bugs out.

If you're in a hurry, buy a small company that has already done most of the work but is running out of money for commercialization.

Good luck, this is a very competitive market.

__________________
Experienced is earned, common sense is taught, both are rare essentials of life.
Register to Reply
Power-User

Join Date: May 2008
Location: Olympia, WA
Posts: 125
Good Answers: 5
#4

Re: Variable Frequency Drive (VFD)

02/26/2009 11:12 AM

Greetings.

I don't know how Big this needs to be but you can purchase off the shelf electric motors that are variable speed that are used on washing machines and blower motors on furnaces.

If you need specific models that I know of just ask I am not near tech manuals.

Good luck.

Register to Reply
Register to Reply 4 comments
Copy to Clipboard

Users who posted comments:

Leonf (1); marcot (1); MuradRabei (1); OlympiaWA (1)

Previous in Forum: Distribution Transformer - Maximum Safe Working Temperature   Next in Forum: hand dryers with radio and tv interference suppressor

Advertisement