变频调速系统中传动比的选择

29SelectionoftheDriveRatioforVVVF'sDriveSystem443000Abstract:InVVVF'sdrivesystem,itisveryimportanttoselectthedriveratiocorrectly.Itcanincreasethefrequencyrangofthedrivesystemandmotor'storque,butdecreasetheflywheeltorqueandpowerofthedrivesystem,etc.Keywords:drivingmechanismdriveratioreduceflywheeltorque1LDTn1.1nn/(1)n/n1nnTn/9550Tn/9550T/Tn/n1/(2)TT(3)1.2(1)(2)nn(4)TT/(5)nT(5)GD’GD/(6)GDGD’3022.1(1)T1002050HzT(%)f(Hz)2(2)11%Hzr/minHzr/min10090807060501500206002.55662707816801860210023401511664503301801803.75.611.613.02.2(1)808008521601600(2)4218560Hz6060/1800r/min12Hz6012/2360r/min1800/3605170%70Hz6070/22100r/min6Hz606/2180r/min2100/18012(3)2100r/min2100/8002.6252.5nMH8002.52000r/minfH22000/6066.6HznML802.5200r/minfL2200/606.6Hz6.666.6Hz33.1vmax200m/minFmax300ND2001200mm3n(r/min)P=1kWP=1kWP=1kWT(Nm)3nv/(D)53318r/minTFD/230180NmPTn/95501kW31(r/min)P=1kWP=1kWP=1kWT(Nm)7.5kWf(Hz)X(r/min)P=1kWP=1kWP=1kWT(Nm)f(Hz)X3.7kW3.2ƒXƒN6MN1000r/minƒ50Hz1000/3183.143Tmax'180/360Nm(601000)/95506.28kWP7.5kWSN12kVA7.53.3ƒXƒN100Hz2000r/min2000/3186.286Tmax'180/630Nm(301000)/95503.14kW3.7kW5.9kVA(A)ƒXƒN(B)ƒX2ƒN4DCSPLCCompactPCI______________________________________________________________________________________________________________________________________________________________________________________________010-6234175125100083010-62341751010-62327470