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Implementation and analysis of PLC SCADA controlled closed loop four quadrant speed control of chopper fed DC motor

机译:斩波直流电机PLC SCADA控制闭环四象限速度控制的实现与分析

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In this paper, a scheme for closed loop speed control of DC motor in four quadrants using Programmable Logic Controller (PLC) is discussed. The armature voltage is varied using a Class E chopper circuit. The individual switches in the chopper circuit are switched using Pulse Width Modulation (PWM) control signals generated by PLC. Duty cycle of PWM signals are varied by PID controller of the PLC. Three main modes of operation have been implemented: Speed control mode, sinusoidal input tracking mode and step input tracking mode. The resulting current, voltage and speed waveforms are recorded on Digital Storage Oscilloscope(DSO) and analyzed. Speed, set point and control variables are observed on GUI made using SCADA software.
机译:本文讨论了一种使用可编程逻辑控制器(PLC)的四象限直流电动机闭环速度控制方案。电枢电压使用E类斩波器电路来改变。斩波器电路中的各个开关使用PLC生成的脉冲宽度调制(PWM)控制信号进行开关。 PWM信号的占空比由PLC的PID控制器来改变。已经实现了三种主要的操作模式:速度控制模式,正弦输入跟踪模式和步进输入跟踪模式。产生的电流,电压和速度波形记录在数字存储示波器(DSO)上并进行分析。在使用SCADA软件制作的GUI上可以观察到速度,设定点和控制变量。

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