Steam-driven power generators rotate at a constant speed via a governor that maintains constant steam pressure in

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Steam-driven power generators rotate at a constant speed via a governor that maintains constant steam pressure in the turbine. In addition, automatic generation control (AGC) or load frequency control (LFC) is added to ensure reliability and consistency despite load variations or other disturbances that can affect the distribution line frequency output. A specific turbine-governor system can be described only using the block diagram of Figure P9.1 in which G(s) = Gc(s)Gg(s)Gt(s)Gm(s), where (Khodabakhshian, 2005)

a. Assuming Gc(s) = K, find the value of K that will result in a dominant pole with ζ = 0.7. Obtain the corresponding Ts.

b. Design a PID controller to obtain the same damping factor as in Part a, but with a settling time of 2 seconds and zero steady-state error to step input commands.

c. Verify your results using a MATLAB simuation.

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