Circuit and System Level Power Management

2006 ◽  
pp. 373-412 ◽  
Author(s):  
Farzan Fallah ◽  
Massoud Pedram
Keyword(s):  
Power Management ◽  
System Level ◽  
Circuit And System

scholarly journals Electrical power management and optimization with nonlinear energy harvesting structures

2018 ◽  
Vol 30 (2) ◽  
pp. 213-227 ◽  
Author(s):  
Wen Cai ◽  
Ryan L Harne
Keyword(s):  
Energy Harvesting ◽  
Nonlinear Vibration ◽  
Power Management ◽  
Partial Information ◽  
Electrical Power ◽  
System Level ◽  
Vibration Energy ◽  
Amplitude Dependence ◽  
Harvesting Systems ◽  
Nonlinear Energy

In recent years, great advances in understanding the opportunities for nonlinear vibration energy harvesting systems have been achieved giving attention to either the structural or electrical subsystems. Yet, a notable disconnect appears in the knowledge on optimal means to integrate nonlinear energy harvesting structures with effective nonlinear rectifying and power management circuits for practical applications. Motivated to fill this knowledge gap, this research employs impedance principles to investigate power optimization strategies for a nonlinear vibration energy harvester interfaced with a bridge rectifier and a buck-boost converter. The frequency and amplitude dependence of the internal impedance of the harvester structure challenges the conventional impedance matching concepts. Instead, a system-level optimization strategy is established and validated through simulations and experiments. Through careful studies, the means to optimize the electrical power with partial information of the electrical load is revealed and verified in comparison to the full analysis. These results suggest that future study and implementation of optimal nonlinear energy harvesting systems may find effective guidance through power flow concepts built on linear theories despite the presence of nonlinearities in structures and circuits.

System-Level Power Management

2006 ◽  
pp. 7-1-7-19
Author(s):  
Enrico Macii ◽  
Vivek Tiwari ◽  
Massimo Poncino ◽  
Naehyuck Chang
Keyword(s):  
Power Management ◽  
System Level

Heterogeneous Integration for HPC and Data Centers

2019 ◽  
Vol 2019 (S2) ◽  
pp. S1-S26
Author(s):  
Kanad Ghose ◽  
Dale Becker
Keyword(s):  
Power Management ◽  
Power Distribution ◽  
Data Centers ◽  
System Level ◽  
Heterogeneous Integration

Abstract Invited Session on HETEROGENEOUS INTEGRATION ROADMAP - Heterogeneous Integration for HPC and Data Centers. This TWG focuses on the system-level implications related to performance, power management, security, power distribution issues and others

Foundation for Virtual Prototyping of Mechanical Power Management Functions in Actuators

2018 ◽  
Author(s):  
Jean-Charles Mare ◽  
Silvio Akitani
Keyword(s):  
Power Management ◽  
Virtual Prototyping ◽  
Contact Forces ◽  
Mechanical Power ◽  
System Level ◽  
Special Focus ◽  
Force Model ◽  
Electromechanical Actuators ◽  
Normal Contact ◽  
Management Functions

Beside the main functions related to the control and transformation of power, safety-critical electromechanical actuators require many additional functions for power routing, protection and limitation. In practice, these functions are implemented mechanically because their realization at motor drive level is not acceptable for performance and reliability reasons. Contact forces play a major role in these mechanical devices (e.g. endstop, lock, brake, torque limiter, etc.), being either functional to serve the need, or parasitic due to their alteration of performance. The virtual prototyping of such mechanical power management functions therefore requires normal and tangent forces to be modelled with the right level of realism and reduced complexity. This communication provides some proposals to be used as foundation for the system-level modelling and simulation of these types of mechanical power elements that can be found in electromechanical actuators. Special focus is given to the model architecting, decomposition and block-diagram implementation, using the example of normal contact forces. The illustrative example concerns an integrated landing gear extension/retraction electromechanical actuator which embeds free-fall and autolock features. It shows how a well implemented single model (e.g. generic normal contact force model) combined with a right model decomposition can meet various modelling needs (e.g. droppable end-stop, lock and shearable axial stop). The proposed models are made compatible for integration in a 2x1D mechanical model architecture (axial and rotational motion) developed by the authors in previous reported work.

scholarly journals PESL: System-Level Estimation of Power-Management Effect on Dynamic Energy Consumption

Electronics ◽  
2020 ◽  
Vol 9 (8) ◽  
pp. 1313 ◽  
Author(s):  
Jaroslav Erdelyi ◽  
Dominik Macko ◽  
Katarina Jelemenska
Keyword(s):  
Energy Consumption ◽  
Power Management ◽  
Hamming Distance ◽  
Management Strategies ◽  
Estimation Method ◽  
System Level ◽  
Estimation Methods ◽  
Energy Estimation ◽  
Key Aspects ◽  
The Impact

Power estimation is one of the key aspects that can help designers create digital circuits more effectively. If a designer is able to estimate circuit parameters during the early stages of development, correct decisions can be made that can significantly shorten the design time. The early design stages are represented by modeling at the system level of abstraction. However, existing system-level power/energy estimation methods are either too complicated, or they do not consider power management when estimating power consumption, meaning they are inaccurate. Therefore, in this paper we propose a method for a more accurate system-level estimation of the dynamic energy consumption by considering the impact of power management. The SystemC description of a power-managed system and the simulation results (in the form of the value change dump (VCD)) are inputs to the estimation method. The proposed method is based on an activity profile using the modified Hamming distance computation. The method is especially useful for the exploration of alternative power-management strategies, and it helps the designer to select the most efficient strategy.

Cross-layer power management in wireless networks and consequences on system-level architecture

2006 ◽  
Vol 86 (8) ◽  
pp. 1792-1803 ◽  
Author(s):  
Bruno Bougard ◽  
Sofie Pollin ◽  
Antoine Dejonghe ◽  
Francky Catthoor ◽  
Wim Dehaene
Keyword(s):  
Wireless Networks ◽  
Power Management ◽  
System Level ◽  
Cross Layer

INTELLIGENT POWER MANAGEMENT FOR EMBEDDED WI-FI DEVICES

2012 ◽  
Vol 21 (01) ◽  
pp. 1250003 ◽  
Author(s):  
WEIYIN HONG ◽  
XIN KUANG ◽  
JIANHUA SHEN ◽  
TONGQUAN WEI
Keyword(s):  
Power Management ◽  
Energy Savings ◽  
Low Power Design ◽  
System Level ◽  
Dynamic Power Management ◽  
Research Attention ◽  
And Performance ◽  
Application Requirements ◽  
Intelligent Power Management ◽  
System Power

With the increasing deployment of Wi-Fi devices in portable embedded systems, the low power design at system level has attracted considerable research attention in the recent past. In this paper, based on hardware features and software architecture of the embedded Wi-Fi devices, we focus on dynamic power management, dynamic frequency scaling, and their influences upon the system power and performance. We propose effective and realizable system power management solution and application modes under various application requirements, such as response, bandwidth, and speed. Experimental results show that the proposed solutions can achieve significant energy savings.

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