Volume 20, Issue 2 (JIAEEE Vol.20 No.2 2023)
Journal of Iranian Association of Electrical and Electronics Engineers 2023, 20(2): 215-225 |
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Rafiee M, Amiri Shadmehri S. A Dynamic Uninterruptible Power Supply (DUPS) with Mechanical Flywheel Storage and Battery. Journal of Iranian Association of Electrical and Electronics Engineers 2023; 20 (2) :215-225
URL: http://jiaeee.com/article-1-1441-en.html
URL: http://jiaeee.com/article-1-1441-en.html
Shahid Beheshti University
Abstract: (1074 Views)
This paper presents a dynamic uninterruptible power supply (DUPS) consisting of both battery and flywheel energy storage systems with the aim of overcoming power quality problems such as temporary voltage drop and power outages. To supply a critical load at the moment of fault occurrence and a few seconds later, the flywheel energy storage system(FESS) and for a few minutes after that or in the case of power outage, the battery storage system and after that, a diesel generator are used respectively. The FESS system consists of a bidirectional inverter, a flywheel and an interior permanent magnet synchronous motor (IPMSM). In the IPMSM control scheme, vector control, torque maximization per ampere(MTPA) and field weakening technics are used. The battery energy storage system consists of a bidirectional DC / DC buck-boost converter and a charge-discharge control. The simulation results show that the FESS changes from standstill to charged and standby condition in less than10 seconds and is ready to supply critical load for short-term phenomena. In UPS mode, it also maintains the critical load voltage at the nominal value in less than one cycle. In the event of a long-term power outage, after discharging the flywheel energy for about 2 seconds, the battery energy storage system maintains the DC link voltage at its reference value and provides the necessary time to start the diesel generator.
Keywords: Dynamic Uninterruptible Power Supply (DUPS), Flywheel Energy Storage (FESS), Battery Energy Storage (BESS), buck-boost DC/DC converter, Power Quality, Voltage sag, Power Outage.
Type of Article: Research |
Subject:
Power
Received: 2022/03/2 | Accepted: 2022/08/27 | Published: 2023/02/26
Received: 2022/03/2 | Accepted: 2022/08/27 | Published: 2023/02/26
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