A20B-2902-0070

A20B-2902-0070 

当磁链幅值时，电压空间矢量的大小与供电电压频率成正比，其方向与磁链矢量正交，即磁链圆的切向方向。当磁链矢量在空间旋转一周时，电压矢量也连续地按磁链圆的切线方向运动2弧度，其轨迹也是圆形的。这样，电动机旋转磁场的轨迹问题就可转化为电压空间矢量的运动轨迹问题。

5.3）三相全桥电压型PWM逆变器的八个电压空间矢量图4-9 三相桥式逆变电路

电压源型PWM逆变器同一桥臂的上、下开关管驱动信号互补。三个桥臂各自独立，每个桥臂有两种开关状态，222=8，三相全桥电压型PWM逆变器总共可以输出8个电压空间矢量。

5.4 ）正六边形空间旋转磁场

6个有效空间电压矢量，在一个输出基波电压周期内各自依次连续作用1/6周期，逆变器运行于这种状态时会得到一个

18 MAC PME SOLENOID VALVE COILS LOT NEW 

BANNER P2B65Q PIXEL-COUNTING SENSOR 

7 GREENFIELD 1/4"-19 BSPF TAPS,4-FLUTE,NE?W 

DAYTON 5K586B AC MOTOR,1/3HP,345?0 RPM,NEW 

MASTER PNEUMATIC R180M-8H PRESSURE REGULATORS,1"NP?T 

2 PARKER J2AU14AC PNEUMATIC CYLINDERS,NEW 

10 FAFNIR 210PP BALL BEARINGS,NEW 

TELEMECANIQUE LR2D3353 THERMAL OVERLOAD RELAY,NEW 

2 MAC 82A-0A-BK3 PNEUMATIC VALVE MANIFOLDS NEW 

2 SQUARE-D 9007C52KC LIMIT SWITCHES,NEW 

MAC 56C-13-117AAAG PNEUMATIC SOLENOID VALVE NEW 

6 GREENFIELD 1/2"-14 BSPF TAPS,4-FLUTE,NE?W, 

ALLEN-BRADLEY 907FK0101 WEB/FLEX ENCODER CARD,NEW 

ISCAR HM90-E90A-D1.25?-4-C1.25-B MILLING TOOL HOLDER 

ALLEN-BRADLEY 1746-INT4 SLC500 THERMOCOUPLE MODULE 

ALLEN-BRADLEY 1746-INT4 SLC500 THERMOCOUPLE I/O NEW 

5 BALL BEARINGS,SKF,FA?FNIR,FAG,6213,2?13 

BOSTON GEAR F710-60-B5-J RIGHT ANGLE GEARBOX NEW 

2 BIMBA BF-175-D PNEUMATIC CYLINDERS,NEW 

19 BALL BEARINGS,MRC,GE?NERAL,FAFNIR,FA?G,CONSOLIDATED 

4 MAC 92B-AAB-000-DM-?DFFP PNEUMATIC SOLENOID VALVES 

DAYTON 3M083B 1/20HP AC MOTOR SINGLE PHASE NEW 

10 PARKER 08F22C2140A3FPH?80 SOLENOID COILS NEW 

2 FESTO MFH-3-3/4 PNEUMATIC SOLENOID VALVES,NEW 

8 MITSUBISHI 45/64" CARBIDE DRILLS,COOLANT-?THRU 

200 NORTON 40532 6" SANDING DISCS,P-80,SPEE?D GRIP,NEW

ALPHA LPB 090-M01-3-111-0?00 SERVO SPEED REDUCER,NEW 

SQUARE-D HDA36060 3-POLE 60AMP I-LINE CIRCUIT BREAKER

2 SANDVIK 435-100151 L49 LATHE TOOL HOLDERS,NEW 

MODICON AS-B825-016 TRUE HIGH INPUT MODULE 

LITTELFUSE 230.500 LEADED FUSE REEL,1500PC,5AM?P,NEW

2000 LITTELFUSE 20AMP AUTOMOTIVE FUSES,0257020.P?XPV,NEW

200 NORTON 40528 6" SANDING DISCS,P-180,SPE?ED GRIP 

正六边形的旋转磁场。六个有效电压矢量各自连续作用1/6T，显然不能得到一个圆形的旋转磁场。所以这种六拍阶梯波逆变器的性能较差。

A20B-2902-0070

A20B-2902-0070