{"title":"Balanced Model Order Reduction Techniques Applied to Grid-tied Inverters In a Microgrid","authors":"Md. Rasheduzzaman, P. Fajri, B. Falahati","doi":"10.1109/SusTech53338.2022.9794187","DOIUrl":"https://doi.org/10.1109/SusTech53338.2022.9794187","url":null,"abstract":"Multiple model order reduction strategies applied to grid-tied inverters in a microgrid setup are assessed in the proposed work. The full-order mathematical model of a grid-tied inverter is first derived for this purpose. The nonlinear equations of a grid-tied inverter system are derived in the synchronous reference frame and then linearized around an operating point to construct a 15 state small-signal model. The 15th order state full order model is then reduced using balanced truncation, balanced residualization, and balanced stochastic truncation. Each of these model reduction techniques results in a 6th order reduced model. Simulation results obtained using PLECS are used to compare the accuracy and equivalency of the reduced-order models to that of the one found using the full-order model. After comparing the results, the balanced residualization method is found to be the most suitable method for the given system.","PeriodicalId":434652,"journal":{"name":"2022 IEEE Conference on Technologies for Sustainability (SusTech)","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-04-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125408215","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"A Non-linear Differentiable Model for Stormwater-based Irrigation of a Green Roof in Toronto","authors":"Chia-Hui Yeh, Margaret P. Chapman","doi":"10.1109/SusTech53338.2022.9794212","DOIUrl":"https://doi.org/10.1109/SusTech53338.2022.9794212","url":null,"abstract":"Green infrastructure has potential to alleviate the environmental impact of rapidly growing cities. This potential has inspired laws in Toronto that require the inclusion of rooftops with large vegetation beds, called green roofs, into sufficiently sized construction projects. We study the problem of reusing stormwater to irrigate a green roof in Toronto, where potable water is the current irrigation source. The vision is that widespread reuse of stormwater runoff for irrigation of green roofs and other purposes can reduce sewer overflow volumes without over-building (with the added benefit of conserving potable water). Towards this vision, our goal is to develop and evaluate two pump controllers for transporting stormwater to the green roof of interest in simulation. A key contribution is our development of a site-specific non-linear model for stormwater flow using smoothing techniques that permits linearization and a standard model predictive controller (MPC). We compare the efficacy of the MPC, which anticipates the weather, and an on/off controller, which is reactive rather than anticipative, for the site in simulation. With further study, we are hopeful that this research will advance control systems technology to improve the performance of green and stormwater infrastructure in growing urban areas.","PeriodicalId":434652,"journal":{"name":"2022 IEEE Conference on Technologies for Sustainability (SusTech)","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126284883","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Geoffrey L. Cueto, F. A. Uy, K. Diaz, C. Monjardin
{"title":"Exploratory Data Analysis of Electric Tricycle as Sustainable Public Transport Mode in General Santos City Using Logistic Regression","authors":"Geoffrey L. Cueto, F. A. Uy, K. Diaz, C. Monjardin","doi":"10.1109/SusTech53338.2022.9794199","DOIUrl":"https://doi.org/10.1109/SusTech53338.2022.9794199","url":null,"abstract":"General Santos City, as the tuna capital of the Philippines, relies with the presence of tricycles in moving people and goods. Considered as a highly-urbanized city, General Santos City serves as vital link of the entire SOCKSARGEN region’s economic activities. With the current thrust of the city in providing a sustainable transport service, several options were identified to adopt in the entire city, that includes cleaner and better transport mode. Electric tricycle is an after sought alternative that offers better choice in terms of identified factors of sustainable transport: reliability, safety, comfort, environment, affordability, and facility. A literature review was conducted to provide a comparison of cost and emission between a motorized tricycle and an e-tricycle. The study identified the existing tricycle industry of the city and reviewed the modal share with the city’s travel pattern. Actual roadside and onboard survey were conducted both to passengers and drivers from the identified terminal to their destination. The survey revealed a number of hazards were with the current motorized tricycle that needs to address for the welfare of the passengers and drivers. With the application of exploratory data analysis using Python program, the study favors the shift to adopting E-tricycle. The model derived from binary logistics regression provided a 72.72% model accuracy. Based from the results and findings, electric tricycle can be an alternative mode of public transport in the city that highly support sustainable option that provides local populace to improve their quality of life through mobility and economic activity. Further recommendation to local policy makers in the transport sector of the city include the clustering of barangays for better traffic management and franchise regulation, the inclusion of transport-related infrastructure related to tricycle service with their investment planning and programming, the roll out and implementation of tricycle code of the city, and the piloting activity of introducing e-tricycle in the city.","PeriodicalId":434652,"journal":{"name":"2022 IEEE Conference on Technologies for Sustainability (SusTech)","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121025986","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}