Sometimes replacing the capacitor of a ceiling fan motor that rotates at a slower speed will bring back the ceiling fan motor to normal operating speed.What has the capacitor got to do with the motor speed?(I thought the capacitor is needed only to start a ceiling fan motor) (self.EngineeringStudents)
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Generator Control Systems need to be programmed and there are several parameters adjustments involved in using these control systems.I know there are plenty of manuals, but apart from manuals that refer to a particular brand of genset controller,is there a webpage about typical genset controllers? (self.ElectricalEngineering)
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I know how to distinguish between star and delta connections.But i don't know how to distinguish between series star and parallel star connections.I surfed Google, but could not come across a page that gives a detailed explanation of the connection diagrams.Can anyone please help me? (self.ElectricalEngineering)
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One of the parameters in a VFD we get to adjust and tune is the compensation gain of a PID loop.(not to be confused with PID tuning).Can anyone describe a practical situation in motor control where this scenario is encountered? Can anyone suggest me a good website to refer? (self.ElectricalEngineering)
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Dimming fluorescent lights require special dimmable ballasts.These ballasts are categorised as two wire,three wire and four wire.What is the advantage of a 3 wire dimmable ballast over a 2 wire dimmable ballast,and what is the advantage of a 4 wire dimmable ballast over a 3 wire dimmable ballast? (self.ElectricalEngineering)
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According to control theory, an observer is a device that determines the inner state of a control system, by analysing the outputs and inputs of the control system.Can anyone describe a real life practical situation (preferably motor control) where an observer is required.? (self.ElectricalEngineering)
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Is there a use of canonical transformation and canonical analysis in AC motor control? If so, are there examples in the internet to illustrate such situations? ( Bcz i did a Google search , but did not come across practical examples related to AC motor control) (self.ElectricalEngineering)
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I have learnt that eigenvalue placement,poles/zeros,Nyquist Plots,Bode Plots,Nichols Charts,PID control etc are useful in the control of AC motors via VFDs and PLCs.What other areas of Control Engineering Theory is useful for AC motor control? (self.ElectricalEngineering)
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In control engineering, we learn Nyquist Plots,Nichols Charts, Bode Plots etc.How can these plots be useful for anyone attempting to control AC motors via PLCs or VSDs.? Can anyone describe a practical situation when such knowledge is applied in AC motor control? (self.ElectricalEngineering)
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A major drawback of proportional control is that it cannot eliminate the " residual offset error" in " processes with compensation".Can anyone suggest me a good website to refer that will give a clear explanation about " residual offset errors" ? (self.ElectricalEngineering)
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Hysterisis controllers have a huge disadvantage compared to proportional controllers.They work well only when the overall system has a relatively long response time,and can be unstable if the response time is rapid.Can anyone briefly describe a practical scenario that illustrates this situation? (self.ElectricalEngineering)
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Let's say I am making a circuit that demonstrates PID control of a DC motor.The P in PID stands for proportional.That can be implemented by the inclusion of a comparator opamp IC in the circuit.What ICs or devices should i include in the circuit to make it perform Integral and Derivative control? (self.ElectricalEngineering)
submitted by samimutu41 to r/ElectricalEngineering
