Use of Array Capacitors to Improve the Power Delivery Performance of a Microprocessor System

2005 ◽  
Author(s):  
Kimberly D. Eilert ◽  
Kaladhar Radhakrishnan ◽  
Michael J. Hill ◽  
Kemal Aygu¨n
Keyword(s):  
Frequency Response ◽  
System Modeling ◽  
Simulation Models ◽  
Power Delivery ◽  
Microprocessor System ◽  
High Frequency Response ◽  
Measurement Results ◽  
Impedance Profile ◽  
System Frequency ◽  
The Impact

We show system modeling and measurement results of a platform with array capacitor solution (ACS) within the frequency domain. A Pentium® 4 microprocessor package was redesigned for a single array capacitor, in place of all multiterminal capacitors. Its system power delivery impedance profile was found to have a more desirable high frequency response than the earlier system designed with discrete multiterminal capacitors. These measured results were also found to agree well with the behavior predicted by simulation models. Additionally we explore the impact and optimization of array capacitor parameters on the overall system frequency response.

scholarly journals A New Measurement System for Performance Analysis in Flatwater Sprint Kayaking

Proceedings ◽  
2020 ◽  
Vol 49 (1) ◽  
pp. 39
Author(s):  
Vincenzo Bonaiuto ◽  
Giorgio Gatta ◽  
Cristian Romagnoli ◽  
Paolo Boatto ◽  
Nunzio Lanotte ◽  
...  
Keyword(s):  
Performance Analysis ◽  
Simulation Models ◽  
Dynamic Force ◽  
Stroke Rate ◽  
Stroke Frequency ◽  
Measurement Systems ◽  
System A ◽  
Measurement Results ◽  
The Impact ◽  
Synchronous Measurement

The full comprehension of the impact with which each force is involved in kayak propulsion is very difficult. The measure of the force on the paddle or the stroke rate only is often not enough for the coach to identify the best actions useful to improve the performances of a kayaker. To this purpose, the synchronous measurement of all parameters involved in the kayak propulsion, both dynamic (force acting on paddle and foot brace) and kinematic (stroke frequency, displacement, velocity, acceleration, roll, yaw, and pitch of the boat) could suggest to the coach more appropriate strategies for better understanding of the paddler’s motion and the relevant effects on the kayak behavior. Some simulation models, as well as measurement systems of increasing complexity, have been proposed in the recent years. In this paper, we present the e-Kayak system: A multichannel Digital Acquisition (DAQ) system specifically customized for flatwater kayaking. The system will be described in depth and its capability investigated through specific measurement results.

The Impact of Tire Measurement Data on Tire Modeling and Vehicle Dynamics Analysis

2010 ◽  
Vol 38 (2) ◽  
pp. 155-180 ◽  
Author(s):  
Thomas Hüsemann ◽  
Mark Wöhrmann
Keyword(s):  
Vehicle Dynamics ◽  
Measurement Data ◽  
Simulation Models ◽  
Major Influence ◽  
Dynamics Analysis ◽  
Tire Model ◽  
Chassis Component ◽  
Measurement Results ◽  
Tire Modeling ◽  
The Impact

Abstract Computer aided engineering tools play an important role in today’s vehicle development process. Today, overall vehicle dynamics analysis and chassis component fatigue resistance investigations can be carried out without the need for existing prototype hardware versions of the corresponding vehicle. An accurate tire model is a key element in precise modeling of the vehicle and its components. All forces acting on the vehicle (except for aerodynamic forces) are transferred via the tires. Therefore, the tire and its modeled characteristics have a major influence on the results of vehicle dynamics analysis. At present, many tire simulation models are available for application in vehicle dynamics analysis. To obtain the best possible performance from these models, a number of different tire measurements are required to support the tire model parameter identification process. This paper presents a review of different tire simulation models and their required tire measurements. Depending on the test rigs used and the measurement procedures applied, the tire measurement results may be somewhat different. What is the impact of these differences on the tire modeling performance and the vehicle dynamics analysis output? This paper gives an answer.

scholarly journals Modeling the Impact of Modified Inertia Coefficient (H) due to ESS in Power System Frequency Response Analysis

Energies ◽  
2020 ◽  
Vol 13 (4) ◽  
pp. 902 ◽  
Author(s):  
Muhammad Saeed Uz Zaman ◽  
Muhammad Irfan ◽  
Muhammad Ahmad ◽  
Manuel Mazzara ◽  
Chul-Hwan Kim
Keyword(s):  
Power Systems ◽  
Power System ◽  
Frequency Response ◽  
Frequency Control ◽  
Load Frequency Control ◽  
Response Analysis ◽  
Model And Simulation ◽  
Virtual Inertia ◽  
System Frequency ◽  
The Impact

The advantages of increased penetration of distributed generation are also accompanied by several challenges, low inertia being one of them, which threatens the grid stability. An emerging approach to confront this problem is the introduction of so-called virtual inertia (VI) provided by energy storage systems (ESS). In contrast to the already available literature which considers a conventional load frequency control (LFC) model, this work concentrates on a modified LFC model as the integration of a large portion of ESS changes the inertia constant ( H ) of a power system. A sensitivity function is derived that shows the effects of changes in H on the power system’s frequency response. With the help of the developed mathematical model and simulation results, it is shown that a difference in the actual and calculated values of H can deteriorate the system performance and economy. As one of the reasons for this difference is improper modeling of ESS in the LFC model, therefore, the study signifies the accurate calculation of H in the power systems having enlarged penetration of ESS.

scholarly journals Feasibility Analysis of EV+X Storage to Support Power System Frequency

2021 ◽  
Vol 256 ◽  
pp. 02031
Author(s):  
Zhe Deng ◽  
Zengping Wang ◽  
Ran Li
Keyword(s):  
Power System ◽  
Frequency Response ◽  
Control Strategies ◽  
Simulation Models ◽  
Economic Benefits ◽  
Response Mechanism ◽  
The Difference ◽  
Primary Frequency ◽  
Renewable Energy Generation ◽  
System Frequency

With the fast growth of renewable energy generation, the power system faces the challenge of low inertia. Lower system inertia makes it more challenging to keep the frequency stable, and the conventional frequency response mechanism is not capable of ensuring frequency within the limit. In this paper, a new frequency response mechanism is proposed to help to improve the frequency performance, where electric vehicles (EV) are used as energy storage, and they will cooperate with existing primary frequency response (PFR) to form an EV+X storage supporting power system frequency. This approach is proposed based on rigorous mathematical derivation, where the relationship between frequency and active power is quantitively analysed. To validate the new mechanism’s feasibility, simulation models are built to simulate the frequency behaviour after a big disturbance, and a series of tests are conducted. Both technical and economic benefits are investigated, considering the difference in EV control strategies and the proportion of EV responses. The result shows that EV+X storage can be a promising solution to the frequency stability problem.

scholarly journals Fast frequency response of inverter-based resources and its impact on system frequency characteristics

2020 ◽  
Vol 3 (5) ◽  
pp. 475-485
Author(s):  
Lining Su ◽  
Xiaohui Qin ◽  
Shang Zhang ◽  
Yantao Zhang ◽  
Yilang Jiang ◽  
...  
Keyword(s):  
Frequency Response ◽  
Frequency Characteristics ◽  
System Frequency
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