#URTIS-ANUAL
OS
&IG!
0OWERSECTION
TOPOLOGY
(EAVYBUSBARSCONNECTTHE)-3MODULESTOTHEEXTERNALMOTORCONNEC
TIONSTUDS!BANKOFPOWERCAPACITORSKEEPS$#BUSLEVELSSTABLEDURINGHIGH
FREQUENCY-/3&%4SWITCHINGANDALSOREDUCES%-)ONTHEEXTERNAL"AND
"CABLES
-OTORCURRENTSANDMOTORSPEEDANDDIRECTIONARETHEPRIMARYFEEDBACK
SIGNALSUSEDINTHEMOTORCONTROLALGORITHMS!CCURATE(ALLSENSORSDETECTTHE
MOTORCURRENTSTHEYDOTHISBYSENSINGTHEmUXCREATEDBYTHEMOTORCURRENTS
ONTHE5AND6MOTOROUTPUTBUSBARSWHERETHEYPASSTHROUGHTHECAPACITOR
BOARDONTHEIRWAYTOTHEEXTERNALMOTORCONNECTIONS-OTORSPEEDANDDIREC
TIONARESIMULTANEOUSLYSENSEDBYAQUADRATURETYPESPEEDENCODERMOUNTED
ONTHEMOTORSHAFT
!00%.$)8!4(%/29/&/0%2!4)/.
!
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