Optimum operating point of an induction machine using a rotor integrated converter with a floating capacitor

2016 ◽  
Author(s):  
Yanmei Yao ◽  
Chandur Sadarangani
Keyword(s):  
Induction Machine ◽  
Operating Point ◽  
Optimum Operating ◽  
Floating Capacitor ◽  
Optimum Operating Point

Analytical model for the signal-to-noise-ratio of drift tube ion mobility spectrometers

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Ansgar T. Kirk ◽  
Alexander Bohnhorst ◽  
Stefan Zimmermann
Keyword(s):  
Ion Mobility ◽  
Drift Tube ◽  
Signal To Noise Ratio ◽  
Resolving Power ◽  
Operating Point ◽  
Optimum Operating ◽  
Signal To Noise ◽  
Experimental Parameters ◽  
Noise Ratio ◽  
Optimum Operating Point

Abstract While the resolving power of drift tube ion mobility spectrometers has been studied and modelled in detail over the past decades, no comparable model exists for the signal-to-noise-ratio. In this work, we develop an analytical model for the signal-to-noise-ratio of a drift tube ion mobility spectrometer based on the same experimental parameters used for modelling the resolving power. The resulting holistic model agrees well with experimental results and allows simultaneously optimizing both resolving power and signal-to-noise-ratio. Especially, it reveals several unexpected relationships between experimental parameters. First, even though reduced initial ion packet widths result in fewer injected ions and reduced amplifier widths result in more noise, the resulting shift of the optimum operating point when reducing both simultaneously leads to a constant signal-to-noise-ratio. Second, there is no dependence of the signal-to-noise-ratio at the optimum operating point on the drift length, as again the resulting shift of the optimum operating point causes all effects to compensate each other.

Achieving the Optimum Operating Point (OOP)

2020 ◽  
pp. 93-128
Author(s):  
Pablo Pérez-Nicoli ◽  
Fernando Silveira ◽  
Maysam Ghovanloo
Keyword(s):  
Operating Point ◽  
Optimum Operating ◽  
Optimum Operating Point

Modelling and Scaling of the Impulse Turbine for Wave Power Applications

2002 ◽  
Author(s):  
Ajit Thakker ◽  
Fergal Hourigan
Keyword(s):  
Maximum Output Power ◽  
Input Power ◽  
Operating Conditions ◽  
Flow Coefficient ◽  
Operating Point ◽  
Optimum Operating ◽  
Wave Power ◽  
Maximum Output ◽  
Impulse Turbine ◽  
Optimum Operating Point

This paper addresses the dimensional analysis of experimental data for the Impulse Turbine and the use of that data to create a model to predict the performance characteristics of an arbitrarily sized turbine under arbitrary operating conditions. The model assumes that the performance of the turbine is a function of flow coefficient only. The model is used to compare the performance of different turbines at the scaled-up level and under varying conditions of axial velocity and angular velocity. Also, the model is used to identify the optimum turbine rotational speed, for maximum output power, at practical sizes over a range of input power levels. This paper clarifies issues relating to the sizing and optimum operating point of the Impulse Turbine over variable sea conditions which oblige the turbine to operate over a design range rather than at a single design point and shows how this optimum operating point may be obtained.

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