基于TL494的铁路客车发电机控制装置设计.PDFVIP

27 2007 2 4 Journal of Liaoning Institute of Technology Vol.27,No.2 Apr. 2007 121001 80C196 TL494 PWM TL494 PWM TP273 B 1005-1090(2007)02-0074-03 Design of Control Equipment for Generators in Carriage Train Based on TL494 ZHANG Yun-peng, LIU Yi, JIN Yan Information Science Engineering College, Liaoning Institute of Technology, Jinzhou 121001, China Key words: TL494; PWM; field current Abstract: According to application of the new type generator and the new requirement of power supply to new type of carriage train, the new type carriage generator and control system for this train based on 80C196 single-chip computer were designed. The system used the output voltage and current from the generator and the charging current as feedback variable. The output of PWM(pulse width modulation)was automatically adjusted by TL494 to control the field current of the generator, which accomplished stabilizing output voltage, output current and the charging current. This system has many advantages, such as high control accuracy, keen response, and simple structure. KP-2A KP-2A 5 kW KP-2A KFT-2 KFT-1 [1] KP-3 KP-2A PWM [2] TL494 2006 12 05 1981 1969 2 TL494 75 1 TL494 TL494 Texas Instrument 12 0 ~ 3.3 V 100% 5 6 1 TL494 4 2% 3 fOSC = RRT 1 ? CCT 7 89 10 11 13 14 5 V 15 16 14 TL494 12 10 mV TL494 CPU IGBT TL494 TL494 CPU CPU TL494 TL494 TL494 TL494 1 TL494 2 CPU Ic D/A 2 I Ic U I Ic TL494 I TL494 D/A TL494 TL494 TL494 IGBT 76 K R4/R3 R2/R1. 15 TL494 TL494 10 13 R1=R3 R2=R4 K2 2 16 9 13 9 10 +15 V 5V IGBT TL494 EXB841 IGBT IGBT. IGBT 27 TL494 EXB841 EXB841 TL494 2 TL494 3 CPU 80C196KB PL/M 3 4 TL494 IGBT PID , 1994: 105 143. [1] , . , 2004(11): 22 24. [2] , , , . [J]. 76 79. [3] . Intel 16 [M]. [J]. , 2006, 26(2): : 3