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Thread Closed: Became flame-war

???
04/02/09 14:08
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 		 #164229 - Another Low cost design
Responding to: ???'s previous message
Another Low cost design here , I think it has everything from Codes to Schematic drivers everything you need to study.

Key Characteristics

Medium construction complexity, multiple fields on stator, cage on rotor
High reliability (no brush wear), even at very high achievable speeds
Medium efficiency at low speed, high efficiency at high speed
Driven by multi-phase Inverter controllers
Motor EMI good but…terrible EMI from Inverter
Sensorless speed control possible
Low cost per horsepower, though higher than for 1-ph AC induction motor
Higher start torque than for 1-ph, easy to reverse motor
Inverter ‘shoot-through’ possible, requires ‘dead-time’ circuits & compensation

http://www.freescale.com/webapp/sp...QMszY#apps

Hope it helps!

-Ap

List of 89 messages in thread
TopicAuthorDate
3 phase induction ac motor rpm controller            01/01/70 00:00      
   Application notes            01/01/70 00:00      
      Another Good application note here with C8051x + Codes            01/01/70 00:00      
         and the very first paragraph is            01/01/70 00:00      
            So what I know that            01/01/70 00:00      
               shooting elephants with BB guns            01/01/70 00:00      
                  Even bigger then            01/01/70 00:00      
                  It becomes disgusting now...            01/01/70 00:00      
                     I do not do layout, that, however            01/01/70 00:00      
                        Cheaper?            01/01/70 00:00      
                           Phraseology            01/01/70 00:00      
                              Thanks            01/01/70 00:00      
                           Warning against the pitfalls does NOT imply an assumption.            01/01/70 00:00      
                              There is a difference            01/01/70 00:00      
                                 Experience            01/01/70 00:00      
                                    Experience , I agree but            01/01/70 00:00      
                                       learning - discouraged            01/01/70 00:00      
                                          I guess you even have fun...            01/01/70 00:00      
                                          learning - discouraged really?            01/01/70 00:00      
                                             Well summarized, AP!            01/01/70 00:00      
                                                what in this is not "comming to the point"            01/01/70 00:00      
                                                   Comming to the point...            01/01/70 00:00      
                                                      Almost complete silence            01/01/70 00:00      
                                                         Silence from whom?            01/01/70 00:00      
                                                            Silence from whome? +            01/01/70 00:00      
                                                               Poster probably hasn't read anything to admit to            01/01/70 00:00      
                                                                  Can you Please            01/01/70 00:00      
                                                                     oh these little sensitive crybabies            01/01/70 00:00      
                                                                        Yes,...            01/01/70 00:00      
                                             it is amazing ...            01/01/70 00:00      
                                                Leave it Erik you have already            01/01/70 00:00      
                                                   I am glad you mention that ...            01/01/70 00:00      
                              Parts' costs            01/01/70 00:00      
   sure            01/01/70 00:00      
      Super idea!            01/01/70 00:00      
         I can make that cheaper            01/01/70 00:00      
            No relevance at all!            01/01/70 00:00      
               as relevant as anything            01/01/70 00:00      
                  Too clever            01/01/70 00:00      
                     Possibilities.            01/01/70 00:00      
                        Possibilities...            01/01/70 00:00      
                           enormous costs            01/01/70 00:00      
                           this as well            01/01/70 00:00      
                              Curious...            01/01/70 00:00      
                                 I have only worked 2 countries over            01/01/70 00:00      
                        I know what you mean            01/01/70 00:00      
                           the truth hurts            01/01/70 00:00      
                              the truth hurts ... Sad , (modified)            01/01/70 00:00      
                                 YES, I deliberately post the truth            01/01/70 00:00      
                                    that was not for you Erik            01/01/70 00:00      
                                       Was I?            01/01/70 00:00      
                           Eh?            01/01/70 00:00      
                              Anyone who is at least not like you            01/01/70 00:00      
                                 WRONG!!!!            01/01/70 00:00      
                                    Ok Erik why the Fuss            01/01/70 00:00      
            You will never Agree            01/01/70 00:00      
               Oh yes I do!            01/01/70 00:00      
                  That is pretty obvious            01/01/70 00:00      
         He didn't say that            01/01/70 00:00      
      I have used many inverters and ..            01/01/70 00:00      
   3 phase induction ac            01/01/70 00:00      
      Another links...            01/01/70 00:00      
   Another Low cost design            01/01/70 00:00      
      low cost?            01/01/70 00:00      
         I didnt say the lowest cost            01/01/70 00:00      
            as you call in the woods ....            01/01/70 00:00      
               as you call in the woods ....            01/01/70 00:00      
                  HUH            01/01/70 00:00      
                     50-2200W            01/01/70 00:00      
                        which page?            01/01/70 00:00      
                           Freescale: "Low cost per horsepow"            01/01/70 00:00      
                              I only opened two            01/01/70 00:00      
                                 Career change            01/01/70 00:00      
                                    just fine, thank you            01/01/70 00:00      
                                       Happy to hear            01/01/70 00:00      
                                          Per arnt you            01/01/70 00:00      
                                             Correct            01/01/70 00:00      
                                                one foot in....            01/01/70 00:00      
                                 I only opened two , How about            01/01/70 00:00      
                                    Manufacturer claims not always true            01/01/70 00:00      
                                       Manufacturer claims not always true - mostly            01/01/70 00:00      
                                          What I mean was            01/01/70 00:00      
                                             Its relative , I do get you            01/01/70 00:00      
                                       "Low" is relative            01/01/70 00:00      
                                    well then the OP will need 3 (if that could work)            01/01/70 00:00      
   Haq has disappeared            01/01/70 00:00      
      Quite common            01/01/70 00:00      
         full of the pieces of failed projects            01/01/70 00:00      
            Easy to go for too big projects too soon            01/01/70 00:00      

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