Electric spring (ES), a new smart grid technology, has earlier been used for providing voltage and power stability in a weakly regulated/stand-alone renewable energy source powered grid. It has been proposed as a demand-side management technique to provide voltage and power regulation. In this paper, a new control scheme is presented for the implementation of the ES, in conjunction with noncritical building loads like electric heaters, refrigerators, and central air conditioning system. This control scheme would be able to provide power factor correction of the system, voltage support, and power balance for the critical loads, such as the building's security system, in addition to the existing characteristics of ES of voltage and power stability. The proposed control scheme is compared with original ES's control scheme where only reactive power is injected. The improvised control scheme opens new avenues for the utilization of the ES to a greater extent by providing voltage and power stability and enhancing the power quality in the renewable energy powered microgrids.

Reliance on renewable energy sources (RESs) such as solar and wind has increased to build a sustainable environment, however, their substantial implementation is hindered by their intermittency. Electric Spring (ES) is one of the technologies to mitigate the intermittent nature of the RESs. In an isolated RES powered microgrid, the ES in conjunction with the non-critical loads in a system like water heaters, refrigerators, and air-conditioners can regulate voltage of critical loads like security system, servers etc. This paper establishes the operating principles of the ES (with reactive power compensation only) and its interaction with RESs based on the understanding of AC power transfer between two sources. The accurate phasors in a system under two scenarios, with and without ES, are drawn. Also, performance of the ES is analyzed and evaluated with respect to variations in the loads (linear) and their types. It is augmented with analytical justifications and validated through simulations and experimental studies. Also, through analytical expressions, simulations, and experiments the importance of the non-critical load on the performance of the ES is illustrated. It is also highlighted that the compensation capabilities of the ES remain the same irrespective of the types of non-critical load.

Decays of a neutral Higgs scalar (H) into a neutral vector meson (V) and a photon (γ) are discussed. The width for H → V + γ is related to the leptonic width V → l+l-. The rate for H → V + V is also estimated using a Phenomenological quark interaction with vector mesons supplemented by form factors. © 1979.

A phenomenological analysis is presented of inverse (IB) experiments on proton targets performed at 6.5, 8.7, and 11.2 m from reactor sources and of a deuteron-disintegration experiment at 11.2 m. The analysis leads to the conclusion that either there is a statistically significant distance dependence of the spectra measured in these experiments or that at least three of the four experiments have unstated sources of error or seriously understated errors. We find that this distance dependence can be accounted for by neutrino oscillations. The distance dependence is exhibited in the normalization-independent ratio of low- to high-energy halves of the spectrum. The ratios at the three distances, taken in paris, differ by greater than 3 standard deviations. The entire analysis is done without using any theoretically calculated spectra. We find that no distance-independent spectrum can account for the 8.7- and 11.2-m IB experiments with a confidence level (C.L.) >0.026. Assuming neutrino oscillations rather than experimental errors are the cause of the distance dependence exhibited by the data we search for and find simple two-component neutrino-oscillation fits to the data with a gain in C.L. over the no-oscillation best fits by factors ranging from 15. These joint oscillation solutions have the (m2, sin22) values: (0.950.10 eV2, 0.320.11), (2.340.23 eV2, 0.200.07), and (3.750.27 eV2, 0.250.08). Under the 3 hypothesis the solutions have the values m212=0.88-0.24+0.16 eV2 and m213=2.390.30 eV2, with amplitudes 0.17-0.08+0.13 and 0.160.08, respectively. The limits quoted correspond to 90% C.L. obtained by including the reactor e spectral range from inversion of the e- spectrum from the fission of U235 and by disregarding the 6.5-m experiment on the grounds that it has poor statistics for analysis of its differential spectrum. Each one of these solutions is within the 68%-C.L. allowed region in the (m2, sin22) space of the analysis by Boehm et al. of their own experiment at 8.7 m. The above oscillation parameters are within the allowed limits from accelerator experiments. Our observation of the difference between the 8.7- and 11.2-m IB experiments on proton targets may constitute new evidence for e oscillations, provided the experiments are correct. © 1983 The American Physical Society.

The rate for proton decay to the e+γ mode is calculated. Although its branching ratio is of order α, its ratio to observable e+π0 correlated decays is 1 8 to 1 40. Observable numbers of p → e+ + γ decays can occur and would provide constraints on the proton wave function at the origin and grand unified parameters independent of hadron final state uncertainties. © 1981.

Within the context of a six-quark model combined with quantum chromodynamics we study the asymmetry in the decay of heavy charged mesons into a definite final state as compared with the charge-conjugated mode. We find that, in decays of mesons involving the b quark, measurable asymmetries may arise. This would present the first evidence for CP noninvariance in charged systems. © 1979 The American Physical Society.