Energy efficient machinery_tammi
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Kari Tammi of VTT Technical Research Centre of Finland researches energy efficient machinery and vehicles. Their work includes: 1) Modelling ship energy systems to optimize energy usage and efficiency during design and operation for cruise ships, container ships, and ferries. 2) Evaluating hybrid vehicle concepts using simulation tools. 3) Developing driver aids for buses to minimize energy consumption while maintaining schedules. 4) Researching electrical motors, generators, and energy storage to improve efficiency.
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This project presents the switched reluctance motor (SRM) with hybrid renewable system. Switched
Reluctance Motors (SRM) has a wide range of industrial applications because of their advantages over
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potential. Various methods have used and applied to control SRM speed generally, the PV-fed EV has a
similar structure to the hybrid electrical vehicle, whose internal combustion engine(ICE) is replaced by the
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The PV has different characteristics to ICEs, the maximum power point tracking (MPPT) and solar energy
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Energy storage like battery technologies, superconducting magnetic energy, capacitors, compressed air and
pumped storage, seems to be an alternative method that the operator of an electrical power grid can use to
adapt energy production to energy consumption, both of which can vary randomly over time. The simulation
results confirm excellent dynamic performance, reduced torque ripple and current oscillation can be achieved
by using ANFIS
E05813034
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Thermal Power Plant Design Thinking for 1st year
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Women are manufacturing's largest pool of untapped talent. The global automotive industry faces a talent crisis as it undergoes a transformation that is creating opportunity for disruption and innovation. Diverse teams of talented professionals can help organizations compete in this increasingly complex environment. How can industry players improve the recruitment, retention, and advancement of women? For more than a decade, we have worked with Automotive News Group to explore this issue. With Automotive News in North America, we honor the 100 leading women in the industry. In Europe, we work with Automotive News Europe to recognize the 25 leading women in the industry. Through both programs, we ask women in the industry for their views and perspectives. This report looks at the findings from the European research efforts. https://www2.deloitte.com/us/en/pages/manufacturing/articles/women-in-the-global-automotive-industry.html
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This study focuses on the conceptual design and the numerical analysis of an Energy Harvesting (EH) device, based on piezoelectric materials, for the sustainability of smart buildings. Before that, a comprehensive literature review on the topic takes place. The device consists in an aerodynamic fin attached to a piezoelectric element that makes use of the airflow to harvest energy. The principal utilization of this device is for energy autonomous sensors, with applications in smart buildings. A performance-based parametric analysis is conducted (in ANSYS®) in order to assess the optimal values of some design and operating condition parameters, including length, width, thickness, constitutive material of the bender and velocity and turbulence intensity of the incoming airflow. The response parameters used for evaluating the performances include the bender maximum tip displacement, the bender vibration frequency, and the rms of the voltage generated by the device. Considerations are made on possible applications in other sectors (structures and transportations infrastructures).Flow-induced energy harvesting: conceptual design and numerical analyses of ...
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Modernization of rotational mechanical energy to generate electrical energy.
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We believe integration and automation are essential to user experience and the promise of efficient work through technology. Automation is the critical ingredient to realizing that full vision. We develop integration products and services for Bonterra Case Management software to support the deployment of automations for a variety of use cases.
This video focuses on integration of Salesforce with Bonterra Impact Management.
Interested in deploying an integration with Salesforce for Bonterra Impact Management? Contact us at sales@sidekicksolutionsllc.com to discuss next steps.
Dandelion Hashtable: beyond billion requests per second on a commodity server
This slide deck presents DLHT, a concurrent in-memory hashtable. Despite efforts to optimize hashtables, that go as far as sacrificing core functionality, state-of-the-art designs still incur multiple memory accesses per request and block request processing in three cases. First, most hashtables block while waiting for data to be retrieved from memory. Second, open-addressing designs, which represent the current state-of-the-art, either cannot free index slots on deletes or must block all requests to do so. Third, index resizes block every request until all objects are copied to the new index. Defying folklore wisdom, DLHT forgoes open-addressing and adopts a fully-featured and memory-aware closed-addressing design based on bounded cache-line-chaining. This design offers lock-free index operations and deletes that free slots instantly, (2) completes most requests with a single memory access, (3) utilizes software prefetching to hide memory latencies, and (4) employs a novel non-blocking and parallel resizing. In a commodity server and a memory-resident workload, DLHT surpasses 1.6B requests per second and provides 3.5x (12x) the throughput of the state-of-the-art closed-addressing (open-addressing) resizable hashtable on Gets (Deletes).
Freshworks Rethinks NoSQL for Rapid Scaling & Cost-Efficiency
Freshworks creates AI-boosted business software that helps employees work more efficiently and effectively. Managing data across multiple RDBMS and NoSQL databases was already a challenge at their current scale. To prepare for 10X growth, they knew it was time to rethink their database strategy. Learn how they architected a solution that would simplify scaling while keeping costs under control.
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Energy efficient machinery_tammi
- 1. Energy Efficient Machinery and Vehicle Solutions Kari Tammi Kari.Tammi@vtt.fi, +358 50 348 7902 Research Professor on Eco-Efficient Machines VTT Technical Research Centre of Finland
- 2. 23/03/2013 2 Energy flow modelling in complex systems Vessel energy system optimisation by modelling ship energy processes including diesel engine, electrical systems, propulsion, waste heat recovery, water/steam circuits, etc. Energy optimisation during design and operation Cases: cruise ship, container ship, and ferry Hybrid vehicle concept evaluation with modelling simulation tools Driver’s aid in bus operation: helps drive to minimise energy consumption but keep schedule Diesel Clutch Control System Electric Motor Gearbox Brakes Clutch Electric Motor Final Drive Gearbox Battery Diesel Engine Brakes Brakes
- 3. 23/03/2013 3 Electrical motor and generator development Electrical machine, converter and energy storage dimensioning taking actual load cycle into account Electrical machine detailed modelling validation measurements Innovative motor concepts: axial and transversal flus motors Air gap force design and optimisation to improve noise and vibration characteristics In-house switched reluctance Active control of radial Partial 3D model of axial flux motor, free of permanent magnets forces in induction motor permanent magnet motor
- 4. 23/03/2013 4 Selected publications of our group Pippuri J. et al. Torque density of radial, axial and Manninen A. Evaluation of the effects of design choices on transverse flux permanent magnet machine surface mounted permanent magnet machines using an topologies. IEEE Transactions on Magnetics. 49(5). analytical dimensioning tool. Master’s thesis. 2012. 2013. Laiho A et al. Attenuation of harmonic rotor vibration in a cage Halmeaho T. et al. Magnetic Bearing as Switched rotor induction machine by self-bearing force actuator. IEEE Reluctance Motor - Feasibility Study for Bearingless Transactions on Magnetics, 45(12). 2009. Switched Reluctance Motor. IEMDC. IEEE Pippuri J. et al. Time-harmonic induction-machine model International Electric Machines and Drives including hysteresis and eddy currents in steel laminations. Conference. 2013. IEEE Transactions on Magnetics, 45(7). 2009. Zou G. et al. Modeling ship energy flow with multi- Tammi K. Active control of rotor vibrations by two feedforward domain simulation. Proc. of CIMAC, International control algorithms. ASME Journal on Dynamic Systems, Council on Combustion Engines. 2013. Measurement and Control, 131(5). 2009. Keinänen J. et al. Adjustable Tuned Mass Damper Tammi K. Gradient-based repetitive learning control for rotor Concept for Diesel Generator. Proc. of CIMAC, vibration control. The International Journal of Intelligent International Council on Combustion Engines. 2013. Control and Systems, 13(4). 2009. Laitinen T. et al. Ecodesign concept case studies: Cu Pippuri J. & Arkkio A. 2D - 1D time-harmonic model for in electric motor and Ni in waste incinerator. MRS rotating electrical machines. Pollack Periodica, 1(3). 2006 Materials Research Society. Vol 1492. 2012. Keränen J. et al. Effect of cell type on convergence of wave Haarnoja T. et al. An estimator for the eigenvalues of propagation schemes. IEEE Transactions On Magnetics, the system matrix of a periodic-reference LMS 40(2). 2004. algorithm. Proc. of IEEE International Conference on Keränen J. et al. Implicit Yee-like scheme on tetrahedral Acoustics, Speech, and Signal Processing (ICASSP mesh. IEEE Transactions On Magnetics, 38(2). 2002. 2012), Kyoto, Japan. 2012. Halmeaho T. Magnetic bearing as switched reluctance motor. Master’s thesis. To be published. 2012.
- 5. 23/03/2013 5 VTT - 70 years of technology for business and society