Power-Electronics-Based Energy Management System With Storage

Abstract

This paper demonstrates the functionality of a power electronics based energy management system (EMS). The EMS includes batteries and a digitally controlled single phase voltage source inverter (VSI) which can be controlled as a current source or a voltage source depending on the status of the AC grid and the user's preference. The EMS guarantees that the critical loads are powered when the AC grid fails; in which case the VSI is controlled as a voltage source. It also accomplishes peak power control by supplying battery power to the local loads while they are powered by the AC grid if the loads get large. The electricity cost savings accomplished by peak shaving are estimated. The EMS functionality is demonstrated by experimental measurements on a laboratory prototype. The control architecture and logic embedded in the EMS are discussed in detail.

Optimized energy management system to reduce fuel consumption in remote military microgrids

“…Two of the legs are used for a bidirectional H-bridge converter and the last one is used as buck or boost to charge and discharge the battery pack respectively. The EMS includes a primary controller [12] for the power electronics and a secondary controller to manage the loads and distributed resources, including storage and PV. Solid state switches are used to connect and disconnect the two generator sets (gensets) and the non critical loads, which can be shed if there is a power failure or to control peak power consumption.…”

“…Solid state switches are used to connect and disconnect the two generator sets (gensets) and the non critical loads, which can be shed if there is a power failure or to control peak power consumption. While [12] focuses on the EMS primary control system, this paper focuses on the secondary controller which gives the OEMS the ability to manage loads and the BESS state of charge.…”

“…Table II and fuel cost 3.964 $ /gal. The OEMS power circuit is shown in Figure 1 and further details of the hardware implementation and control system can be found in [12]. The circuit shown in Figure 14 was assembled in the laboratory to demonstrate how the OEMS Figure 15.…”

Online Energy Management Systems for Microgrids: Experimental Validation and Assessment Framework

“…In this regard, a smart energy management system is defined in [25] with an architecture that uses different functional modules, which are connected sequentially, but this can produce bottlenecks in the data flow.Additionally, the previous works do not deal with the uncertainty of the RES generation and consumption. In this sense, online strategies have been implemented such as in [26]- [31], where MG-EMSs are designed and implemented by considering the current status of the MG, but without foreseeing the future availability of generation or consumption. In [32], an online optimal energy/power control method is presented for the operation of energy storage in gridconnected electricity microgrids considering predicted future electricity usage and renewable energy generation but they do not consider safety ranges and proper charging stage for the operation of ESS based on batteries, which ensures longer ESS lifetime [33].…”

Mixed-Integer-Linear-Programming-Based Energy Management System for Hybrid PV-Wind-Battery Microgrids: Modeling, Design, and Experimental Verification

“…The energy scheduling problem for providing commands to power electronics devices has been addressed in previous works, such as [7]- [9], but only in the framework of reactive approaches (the actions are determined based on current operational conditions). On the other hand, scientific contributions focusing on the optimization problem do not consider the operation modes of the controllers and devices [2], [10], [11], or lack of experimental validation [12].…”