Modern electric power utilities are facing a variety of challenges introduced by the increasing complexity of their operation, structure, and consumer loads. One such challenge has been to supply the ever growing demand for reactive power which is essential for grid support. For this reason dynamic VAR technologies are becoming much more important to modern day power systems. A recent dynamic VAR technology known as the Dynamic Capacitor offers full quadrant capacitive VAR control through the combination of AC/AC buck and boost cells. This paper introduces a new topology deemed the “Four-Switch Buck-Boost Dynamic Capacitor” which promises to combine the performance of the AC/AC buck and boost cells into a single power electronic device. This is done in an effort to reduce the required component count and thus reduce the overall device footprint and implementation cost of the Dynamic Capacitor technology. Derivations and analysis will detail the workings of the Four-Switch Buck-Boost Dynamic Capacitor, while simulations in LTSpice and Matlab Simulink will demonstrate the functionality and performance of the proposed topology. The results of this thesis prove the Four-Switch Buck-Boost Dynamic Capacitor to be a feasible shunt reactive compensating device.
","abstract_html":"<p>Modern electric power utilities are facing a variety of challenges introduced by the increasing complexity of their operation, structure, and consumer loads. One such challenge has been to supply the ever growing demand for reactive power which is essential for grid support. For this reason dynamic VAR technologies are becoming much more important to modern day power systems. A recent dynamic VAR technology known as the Dynamic Capacitor offers full quadrant capacitive VAR control through the combination of AC/AC buck and boost cells. This paper introduces a new topology deemed the “Four-Switch Buck-Boost Dynamic Capacitor” which promises to combine the performance of the AC/AC buck and boost cells into a single power electronic device. This is done in an effort to reduce the required component count and thus reduce the overall device footprint and implementation cost of the Dynamic Capacitor technology. Derivations and analysis will detail the workings of the Four-Switch Buck-Boost Dynamic Capacitor, while simulations in LTSpice and Matlab Simulink will demonstrate the functionality and performance of the proposed topology. The results of this thesis prove the Four-Switch Buck-Boost Dynamic Capacitor to be a feasible shunt reactive compensating device.</p>","abstract_has_math":false,"creators":["Plasencia, Oscar"],"institution":null,"degree_name":"MS in Electrical Engineering","degree_level":null,"degree_discipline":"Electrical Engineering","degree_department":null,"school":null,"contributors":["Taufik"],"advisors":[],"committee_chairs":[],"committee_members":[],"year":2011,"date_issued":"2011-12-01T08:00:00Z","date_published":"2011-12-01T08:00:00Z","updated_at":"2026-07-24T01:31:11Z","subjects":["Dynamic Capacitor","D-Cap","FACTS","VAR Compensation","Power and Energy"],"languages":[],"rights":[],"rights_urls":[],"identifier_entries":[{"key":"dc:identifier","label":"Identifier","values":["10.15368/theses.2011.215"],"render_values":[{"text":"10.15368/theses.2011.215","href":"https://doi.org/10.15368/theses.2011.215","code":true}]}]},"links":{"outbound_url":"https://digitalcommons.calpoly.edu/theses/660","outbound_label":"Repository record","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor","label":"Contributor","values":["Taufik"]},{"key":"dc:creator","label":"Author","values":["Plasencia, Oscar"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date.available","label":"Dc Date Available","values":["2011-12-14T08:00:00Z"]},{"key":"thesis:degree_discipline","label":"Discipline","values":["Electrical Engineering"]},{"key":"thesis:degree_name","label":"Degree Name","values":["MS in Electrical Engineering"]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["Dynamic Capacitor","D-Cap","FACTS","VAR Compensation","Power and Energy"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier","label":"Identifier","values":["https://digitalcommons.calpoly.edu/theses/660","10.15368/theses.2011.215"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description.abstract","label":"Abstract","values":["Modern electric power utilities are facing a variety of challenges introduced by the increasing complexity of their operation, structure, and consumer loads. One such challenge has been to supply the ever growing demand for reactive power which is essential for grid support. For this reason dynamic VAR technologies are becoming much more important to modern day power systems. A recent dynamic VAR technology known as the Dynamic Capacitor offers full quadrant capacitive VAR control through the combination of AC/AC buck and boost cells. This paper introduces a new topology deemed the “Four-Switch Buck-Boost Dynamic Capacitor” which promises to combine the performance of the AC/AC buck and boost cells into a single power electronic device. This is done in an effort to reduce the required component count and thus reduce the overall device footprint and implementation cost of the Dynamic Capacitor technology. Derivations and analysis will detail the workings of the Four-Switch Buck-Boost Dynamic Capacitor, while simulations in LTSpice and Matlab Simulink will demonstrate the functionality and performance of the proposed topology. The results of this thesis prove the Four-Switch Buck-Boost Dynamic Capacitor to be a feasible shunt reactive compensating device.
"]},{"key":"dc:title","label":"Title","values":["Modeling and Analysis of a Four-Switch Buck-Boost Dynamic Capacitor"]}]}],"canonical_facts":{"dc:contributor":["Taufik"],"dc:creator":["Plasencia, Oscar"],"dc:date.available":["2011-12-14T08:00:00Z"],"dc:description.abstract":["Modern electric power utilities are facing a variety of challenges introduced by the increasing complexity of their operation, structure, and consumer loads. One such challenge has been to supply the ever growing demand for reactive power which is essential for grid support. For this reason dynamic VAR technologies are becoming much more important to modern day power systems. A recent dynamic VAR technology known as the Dynamic Capacitor offers full quadrant capacitive VAR control through the combination of AC/AC buck and boost cells. This paper introduces a new topology deemed the “Four-Switch Buck-Boost Dynamic Capacitor” which promises to combine the performance of the AC/AC buck and boost cells into a single power electronic device. This is done in an effort to reduce the required component count and thus reduce the overall device footprint and implementation cost of the Dynamic Capacitor technology. Derivations and analysis will detail the workings of the Four-Switch Buck-Boost Dynamic Capacitor, while simulations in LTSpice and Matlab Simulink will demonstrate the functionality and performance of the proposed topology. The results of this thesis prove the Four-Switch Buck-Boost Dynamic Capacitor to be a feasible shunt reactive compensating device.
"],"dc:identifier":["https://digitalcommons.calpoly.edu/theses/660","10.15368/theses.2011.215"],"dc:subject":["Dynamic Capacitor","D-Cap","FACTS","VAR Compensation","Power and Energy"],"dc:title":["Modeling and Analysis of a Four-Switch Buck-Boost Dynamic Capacitor"],"thesis:degree_discipline":["Electrical Engineering"],"thesis:degree_name":["MS in Electrical Engineering"]},"updated_at":"2026-07-24T01:31:11Z"}