Mott MacDonald

About: Mott MacDonald is a company organization based out in London, United Kingdom. It is known for research contribution in the topics: Electric power system & Wind power. The organization has 586 authors who have published 529 publications receiving 9801 citations. The organization is also known as: Mott MacDonald Group & MMD.

Climate Change Scenarios and Their Potential Impact on World Agriculture

Abstract: Global and regional climate can change as a result of natural and anthropogenic factors. This chapter provides a brief synopsis of those factors, including processes that have driven historic, and present-day changes and likely future changes within the present century. Included is an overview of the latest Intergovernmental Panel on Climate Change (IPCC) climate projections, using a variety of possible future greenhouse gas concentrations (though also accounting for natural climate fluctuations). The possible implications of these changes (especially changes in temperature and precipitation) to crop growth and agriculture is then examined.

Designing Harmonic Filters for an Aluminum Smelting Plant

Abstract: This paper presents the results of harmonic analysis and harmonic filter design for a grid connected aluminum smelting plant. Harmonic analysis studies are carried out to detect the system resonance frequencies and determine individual and total harmonic voltage distortion for a wide range of possible system operating conditions including scenarios with N-1 and N-2 generation, an outage of a harmonic filter, and an outage of a rectifier transformer. A conceptual harmonic filter design procedure for the filters required for the smelting plant is presented. The suitability and robustness of the proposed harmonic filter configuration in terms of the filter's components current and voltage ratings, and corresponding r.m.s. values is investigated.

Thoughts on a Simple Means of Estimating Settlement in Thick Soil Layers in Accordance with Hypothesis B

Abstract: Settlement of structures founded on soft soil is a primary concern for geotechnical engineers. Buildings will frequently fail due to reaching the serviceability state due to cracking and or tilting from uneven settlement well before reaching the ultimate limit state. There is ongoing discussion in the geotechnical engineering community on the mechanics of settlement, specifically the point at which secondary consolidation (creep) begins: ought Hypothesis A or Hypothesis B be adopted? This paper addresses the challenges in estimating Hypothesis B, where the strain values in both thick and thin soil samples at the end of primary consolidation are believed to be a function of both the change in void ratio, which is understood well, and creep, which is not. A new empirical-based model, the EOP-Anchor model, is proposed to estimate Hypothesis B strain as a function of settlement time and soil thickness in conjunction with standard laboratory oedometer test data on thin samples.