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???
02/03/10 14:23
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 		 #172864 - worry
Responding to: ???'s previous message
Kiran V. Sutar said:
Now my worry areas are:
1. How to sense such a high current (1000Amps).
2. How to control the voltage and current at Max. 50V, Max.1000Amps. Schematic will be a lot of help here.
3. What should be used ? SCRs, IGBTs, MOSFETs? I have never used IGBTs before, hence would prefer SCR/MOSFET.
4. Can we use the DC drive circuit for this application?




1) To sense high current use Current Transformers ,google will show you as high as 2000A.

2)A suggestion would be PWM controllers , but if you are not conversant with it there will be a lot of heat dissipation 'core losses'

3) I would use MOSFETS or IGBTs but IGBTs require attention.

4) What exactly do you mean by "DC drive circuit "? .


Regards
-Ap

List of 49 messages in thread
TopicAuthorDate
Controlling DC Max.50V, 1000A            01/01/70 00:00      
   worry            01/01/70 00:00      
      mixing facts            01/01/70 00:00      
         what mixing facts ?            01/01/70 00:00      
            A Hall sensor is NOT a transformer            01/01/70 00:00      
               Everybody knows that            01/01/70 00:00      
                  Do they?            01/01/70 00:00      
                  if everybody knows that ...            01/01/70 00:00      
                     Erik is this ego or anger ?            01/01/70 00:00      
                        Terminology is unhelpful            01/01/70 00:00      
                           A CT is a CT !            01/01/70 00:00      
                              Irrespective of the technology employed (2)            01/01/70 00:00      
                                 patent it immediately            01/01/70 00:00      
                                    Marketing Misnomer            01/01/70 00:00      
                                    You are an IGNORANT person            01/01/70 00:00      
                              correct            01/01/70 00:00      
                                 Some idiot            01/01/70 00:00      
                                 How can you call IEEE community IDIOT?            01/01/70 00:00      
                                    Here is another example from CERN            01/01/70 00:00      
                                       two wrongs do not make a right            01/01/70 00:00      
                                          That is currently applying to you            01/01/70 00:00      
                                          True enough, when both the wrongs are yours            01/01/70 00:00      
                                             as so often ...            01/01/70 00:00      
                                                If you read the header ...            01/01/70 00:00      
                                                   CT            01/01/70 00:00      
                                                      Gents - I am amused...            01/01/70 00:00      
                                                         It is entirely pertinent to the original question!            01/01/70 00:00      
                                                            Not precise terminology but Abbreviations            01/01/70 00:00      
                                                               Different Issue!            01/01/70 00:00      
                                                                  Different Issue! yes it is            01/01/70 00:00      
                                                                     Transformer            01/01/70 00:00      
                                                                        I mean            01/01/70 00:00      
                                                                           AC still            01/01/70 00:00      
                                                                              Yes ...            01/01/70 00:00      
                                                                                 Mechanical Man            01/01/70 00:00      
                                    so your opinion is            01/01/70 00:00      
      DC Drive Circuit...            01/01/70 00:00      
   current sensor            01/01/70 00:00      
      NXP has Hall-effect sensors and so does Allegro            01/01/70 00:00      
   Thanks for all the help...Now looking for MOSFET            01/01/70 00:00      
      easy            01/01/70 00:00      
      For mosfet selection            01/01/70 00:00      
         Many Thanks Erik and AP Charles...            01/01/70 00:00      
   Thanks Everybody...please cool down....            01/01/70 00:00      
      Can a Hall Effect Sensor work equally well as a CT?            01/01/70 00:00      
         measurement range            01/01/70 00:00      
            Thanks Stefan Kanev,            01/01/70 00:00      
               avoid            01/01/70 00:00      
                  Point Noted...Thank you.            01/01/70 00:00      

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