scispace - formally typeset
Search or ask a question

Answers from top 14 papers

More filters
Papers (14)Insight
DC Micro Grids are a cost effective way to provide the basic functions of electricity at a fraction of the cost of traditional electric delivery.
By studying existing AC charging points on the market, it presents a low-cost smart AC charging system to reduce the cost investigated by power companies and operational bodies when laying of a large number of AC charging points.
Since most power factor correction circuits available in the commercial market utilize unidirectional ac-dc boost converter topologies, this is an almost no-cost solution for compensating harmonic current and reactive power in residential applications.
The laying efficiency of the AC GIL will be improved in total by 20–30% which will reduce the AC GIL project cost.
Considering the load profile and resource estimation, the most cost effective system is proposed.
It was concluded that TV with DC provides the most cost-effective cooling scheme.
By incorporating the AC-AC energy conversion technology and eliminating the energy storage device the topologies proposed represents attractive alternatives due to their relatively low cost, maintenance requirements and complexity.
Nevertheless the AC appears to be cost beneficial.
The proposed driving method, which uses only two electrodes in a three-electrode type AC-PDP, can reduce the cost of the driving circuits by 25%, thereby achieving a low cost AC-PDP.
The unidirectional ac/dc topology has advantage in cost saving.
This wind farm topology is also cost-effective since the number of three phase transformers and AC-DC converters can be reduced.
Unlike previous proposals, this paper proposes a direct ac-ac converter to reduce the component count, reduce cost, improve reliability, and increase efficiency.
However, cost comparison of AC and DC loads indicate that, for renewable energy powered small scale irrigation systems, AC pumps leads to uneconomic results and excess generation.
The cost analysis has shown that AC is very costly as compared to the other adsorbents used for the studies.

See what other people are reading

How to calculate the air velocity generated by fan in wind tunnel ?
4 answers
To calculate the air velocity generated by a fan in a wind tunnel, various methods and technologies have been developed. One approach involves establishing a fan wind energy calculation model based on different wind speeds before and after passing through the fan, as well as the fan area and air density. Additionally, a wind tunnel active simulation method utilizes an array of fans with adjustable deflection angles to simulate different wind profiles accurately. Furthermore, adjusting the fan rotor blade setting angle based on the fan rotating speed and flow velocity in the wind tunnel test section can optimize fan performance without the need for total pressure rise measurements, saving costs and ensuring reliable results. These methods collectively contribute to accurately determining and controlling the air velocity generated by fans in wind tunnels.
What are the various forms of renewable energy sources in Indonesia?
4 answers
Renewable energy sources in Indonesia include wind energy, solar energy, biomass energy, geothermal energy, and hydro energy. Indonesia has significant potential in renewable energy, with 419 GW capacity, including 75 GW of hydro energy, 23.7 GW of geothermal, 32.6 GW of bioenergy, 207.8 GW of solar, and 60.6 GW of wind energy. Wind energy can be harnessed through large-scale wind turbines or Small Wind Turbines, with studies focusing on wind mapping for optimal design. Solar energy is abundant throughout the year in Indonesia, making it a promising renewable energy source, with calibration methods like the Continuous Sun and Shade Method being developed for accurate measurements. Additionally, achieving Indonesia's net-zero emissions target involves utilizing nuclear power, energy storage, and decommissioning fossil fuel power plants, emphasizing the importance of diverse renewable energy sources.
Can electromagnets be used to generate electricity at a similar scale and cost-effectiveness as conventional methods?
5 answers
Electromagnets can indeed be utilized to generate electricity efficiently and cost-effectively, comparable to conventional methods. Various innovative systems leverage electromagnets to produce electricity by harnessing magnetic fields. These systems involve setups like power-generating coils in changing magnetic fields created by electromagnets, magnetically enhanced devices with permanent magnets to boost power output while potentially requiring less input, and generators with rotating flux switches inducing electricity in pickup coils through alternating magnetic flux. Additionally, electromagnetic generators can charge batteries using radiofrequency energy, further demonstrating the viability of electromagnets in electricity generation systems. Such approaches showcase the potential for electromagnets to offer a competitive and sustainable alternative for electricity production.
What does distribution station contributes to the power system?
5 answers
Distribution stations play a crucial role in power systems by facilitating voltage transformation and power distribution. They are equipped with monitoring devices that provide essential electric power data such as electric quantity, temperature, humidity, consumption, and grounding information. Additionally, distribution stations ensure the safe and reliable operation of the distribution system, which is vital for overall system stability. By closely integrating distribution substations with background and mobile terminals, the efficiency of monitoring and maintenance is enhanced, guaranteeing operational stability and security. Furthermore, the configuration of maintenance stations within a power distribution system allows for real-time adjustments in monitoring strategies based on power risk characteristics and passenger flow information, ultimately improving monitoring effectiveness. Overall, distribution stations contribute significantly to maintaining the reliability and stability of power distribution networks.
What is the concept of posthuman power in the context of Foucault's theory of power?
5 answers
Posthuman power, within the framework of Foucault's theory of power, embodies a shift towards humande-centering perspectives, challenging traditional dualistic views and reimagining human-nonhuman relationships. This concept emphasizes agency, social structures, social knowledge, and being-in-the-social-world as interactive and enabling components of power. Posthuman power, as exemplified by Pippi Longstocking, defies authority to secure agency for the community, fostering a posthuman community that transcends anthropocentric norms. In analyzing human-animal interactions, Foucault's theoretical constructs are utilized to explore power dynamics, including control, training, and biopolitical regulation, highlighting the constructed nature of ontological boundaries and the interconnectedness between humans and nonhumans. This critical approach underscores the shared destiny of humans and nonhumans within matrices of domination and control, urging future social research to integrate the critical tradition and social activism.
What are the current challenges faced by female workers in resolving industrial relations disputes during the COVID-19 pandemic?
5 answers
Female workers during the COVID-19 pandemic are facing various challenges in resolving industrial relations disputes. These challenges include gendered burnout, mental health issues, increased household responsibilities, job insecurity, work-life conflict, gender inequalities, reduced internal communication, financial dependence, domestic violence, and exploitation. Additionally, the pandemic has led to a loss of income for many women working in different sectors, with employees and the self-employed being particularly affected compared to entrepreneurs. The burden of household responsibilities has disproportionately fallen on women, exacerbating their workload and stress levels. Furthermore, the shift to remote work has limited communication and management activities, impacting industrial relations and potentially increasing job-related contentment levels for some working women.
What is study motivation?
5 answers
Study motivation refers to the reasons and willingness that drive individuals to engage in educational activities. It represents a fundamental theory explaining human behavior, encompassing desires, needs, and actions to fulfill those needs. Motivation can stem from various sources such as the desire for knowledge, professional growth, social recognition, and personal development. Both internal factors like personal qualities and external factors like the learning environment, teacher-student interactions, and grades play crucial roles in shaping study motivation. The interplay between internal and external motivational factors, along with individual characteristics and learning processes, highlights the complexity of study motivation. Understanding and enhancing study motivation are essential for promoting academic success and reducing dropout rates in educational settings.
Is the electromagnets is useful as an alternative to electricity?
5 answers
Yes, electromagnets are indeed useful as an alternative to electricity due to their energy-saving capabilities and practical applications. Electromagnets can be utilized in various devices such as printers, power generators, and experimental apparatus, showcasing their versatility and efficiency. By adopting electromagnets in different fields, like education for teaching Electricity and Magnetism, electromagnets have proven to be effective in enhancing learning outcomes and student engagement. The energy-saving electromagnet design mentioned in one study highlights the significant reduction in energy consumption while maintaining electromagnetic attracting force, making electromagnets a sustainable and efficient choice. Overall, electromagnets offer a viable and beneficial alternative to traditional electricity in various practical applications.
What impact does the portrayal of racism in Cinderella stories have on readers' perceptions of race and social issues?
5 answers
The portrayal of racism in Cinderella stories can significantly influence readers' perceptions of race and social issues. Various adaptations of Cinderella tales, particularly those from Black cultures, highlight diversity issues and the need for counter-narratives in the school curriculum. These adaptations reveal racial similarities but also distinct differences that call for attention and careful consideration by educators. By analyzing different versions of the Cinderella narrative, it becomes evident that tales like those by Perrault and the Brothers Grimm have the potential to impact societies profoundly, while more contemporary retellings by authors like Anne Sexton and Disney offer valuable critiques of social hierarchies and gender roles. Therefore, the portrayal of racism in Cinderella stories can shape readers' understanding of race dynamics and societal injustices, emphasizing the importance of diverse and inclusive narratives in literature.
To what extent has gender equality been achieved in education and development globally?
5 answers
Gender equality in education and development globally has made significant strides, yet challenges persist. The Sustainable Development Goals (SDGs) highlight gender equality as a crucial aspect of development. Despite progress, disparities in education and income hinder gender equality in developing regions. The World Bank Group reflects on the past decade's progress in promoting gender equality, emphasizing evidence-backed solutions to close persistent gaps. Education plays a vital role in development, with debates focusing on gender equality and girls' education within global policy frameworks like the SDGs. Although education is recognized as a fundamental human right, gender biases and inequalities still prevent many girls and women from accessing quality education, perpetuating societal prejudices. Continuous efforts are needed to address these challenges and further advance gender equality in education and development globally.
Why is generation station is important in power system?
5 answers
Power generation stations play a crucial role in power systems due to their ability to generate electric power. They incorporate various technologies like synchronous machines connected to renewable sources such as wind, solar, and hydropower generators to enhance power quality and grid stability. Additionally, power generation stations can effectively combine different power supply devices like hydraulic turbine generators, wind-driven generators, and solar cell panels to ensure continuous and efficient power generation. Some stations even utilize heat energy storage devices to supplement power generation, further enhancing their efficiency. By integrating these technologies and systems, power generation stations contribute significantly to meeting the electricity demands of modern lifestyles and industries while ensuring stable and reliable power supply.