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Machine learning predicts risk in ACS
Nature Reviews Cardiology, 2021A new machine learning risk-stratification model accurately predicts the 1-year risk of ischaemic and major bleeding events in patients with an acute coronary syndrome and might be useful to guide clinical decision-making and optimize the quality of care of these patients.
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Comparison of AC Motors to an Ideal Machine Part II—Non-Sinusoidal AC Machines
IEEE Transactions on Industry Applications, 2019This two-part article compares the torque performance of 12 types of ac machines based on the same surface current density, tooth flux density, and rotor dimensions. Part II examines the torque capability of machines more recently developed which utilize the wave shaping capability of a solid-state frequency inverter.
Thomas A. Lipo, Wenbo Liu, Zhentao Du
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Algebraic synthesis and analysis of windings for AC machines
e & i Elektrotechnik und Informationstechnik, 2021This paper presents an important method for the algebraic synthesis of the winding layout of AC machines. It applies in general to integral-slot and fractional-slot windings, including non-overlapping windings, so it can be claimed to unify the synthesis task. Moreover, it results in the highest possible winding factor at the working harmonic.
Johannes Germishuizen +2 more
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2010
Electrical drives are used to convert electrical energy to mechanical energy. They all use a magnetic field as the medium for energy conversion. As we will see the conversion is reversible, just as it is with hydraulic drive systems.
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Electrical drives are used to convert electrical energy to mechanical energy. They all use a magnetic field as the medium for energy conversion. As we will see the conversion is reversible, just as it is with hydraulic drive systems.
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CONTROL OF AC-MACHINES WITH THE HELP OF MICROELECTRONICS
IFAC Proceedings Volumes, 1983Abstract AC-machines, in particular induction motors, are of simple mechanical construction but have a nonlinear, highly interacting multivariable control structure. This, in combination with the short time scale involved, has made it difficult in the past to design controlled AC-drives with high dynamic performance.
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Practical Control of AC Machine
2020The electric machine based on a control system with the machine model is not a simple task but requires necessary simulation tools to understand its basic operation. The complexity of their models suggests performing first simulations both in open and closed loop, without using an electric drive (VSI or DC servo stage).
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1991
The commutator in a DC machine performs a complex function which we have not attempted to analyse in detail; the performance equations, on the other hand, are relatively simple. With the AC synchronous and induction machines, the situation is reversed. The absence of a commutator simplifies both the structure and the detailed analysis, but the machine ...
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The commutator in a DC machine performs a complex function which we have not attempted to analyse in detail; the performance equations, on the other hand, are relatively simple. With the AC synchronous and induction machines, the situation is reversed. The absence of a commutator simplifies both the structure and the detailed analysis, but the machine ...
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Unbalanced Operations of AC Machines
IEEE Transactions on Power Apparatus and Systems, 1965In this paper, unbalanced operations of induction and synchronous machines are discussed. The current-voltage differential equations, referred to the moving reference axes ? and s, are derived directly from the general equations of armature reaction and induced voltage.
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Dynamics of AC electrical machines
[1992] Record of Conference Papers Industry Applications Society 39th Annual Petroleum and Chemical Industry Conference, 1992The concepts of natural frequency, critical speed, excitation, mechanical resonance, damping, torsional excitation, torsional critical speeds, unbalanced magnetic pull, and magnetic instability are defined and placed in context. The author seeks to encourage the use of technically justified words and phrases in the technical literature.
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Dynamical Models of AC Machines
2015This chapter presents a detailed review of the basic concepts describing the mechanical and electrical behavior of alternative current (AC) machines, which will be used extensively in the following chapters. AC machines, specifically the permanent magnet synchronous motor (PMSM) and the induction motor (IM), will be studied.
Alain Glumineau, Jesús de León Morales
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