This paper presents optimal AGC regulator design of deregulated power system based on the full state feedback control strategy. The two-area interconnected power system of identical nature consisting of non-reheat turbine is considered for the investigations. The areainterconnection of the power system via parallel EHVAC/HVDC transmission link is considered. The proposed controller is applied t...

We calculate the constraints on the primordial curvature perturbation at the end of inflation from the present day abundance of Primordial Black Holes (PBHs), as a function of the reheat temperature TRH. We first extend recent work on the formation of PBHs on scales which remain within the horizon during inflation and calculate the resulting constraints on the curvature perturbation. We then ev...

We point out that inflaton decays can be a copious source of stable or long–lived particles χ with mass exceeding the reheat temperature TR but less than half the inflaton mass. Once higher order processes are included, this statement is true for any χ particle with renormalizable (gauge or Yukawa) interactions. This contribution to the χ density often exceeds the contribution from thermal χ pr...

In this paper an Artificial Neural Network (ANN) based controller is presented for the Automatic Generation Control (AGC) of a five area interconnected power system with reheat turbines. The control scheme guarantees that steady state error of the area frequencies and inadvertent interchange of tielines are maintained in a given tolerance limit. ANN controller controls the inputs of each area i...

We make generic remarks about baryogenesis in models where the scale Ms of quantum gravity is much below the Planck scale. These correspond to M-theory vacua with a large volume for the internal space. Baryogenesis is a challenge, particularly for Ms <∼ 105 GeV, because there is an upper bound on the reheat temperature of the Universe, and because certain baryon number violating operators must ...

This paper presents the Load frequency control (LFC) of a multi-source power system with Redox flow batteries (RFB). The power system comprises non-reheat thermal, hydro and gas generating units. RFB is integrated to the LFC system to improve the dynamic responses. The proportional plus integral (PI) controller is designed using the PSO technique. Dynamic responses are obtained by giving 1% ste...

Electroweak baryogenesis could be very efficient at the end of an electroweakscale inflation. Reheating that followed inflation could create a highly nonequilibrium plasma, in which the baryon number violating transitions were rapid. In addition, the time-dependent motions of the scalar degrees of freedom could provide the requisite CP violation. If the final reheat temperature was below 100 Ge...

A direct expansion (DX) HVAC system is an efficient way to supply fresh and dehumidified air to a built environment. To improve the efficiency of a conventional DX system in hot and humid regions, fresh air dehumidification and conditioning systems with energy recovery measures are the key equipment to reach such a goal. To achieve this goal an integrated system is proposed. The integrated syst...