Case Report
Version 1
Preserved in Portico This version is not peer-reviewed
Acceleration Analysis of Canned Motor for SMR Reactor Coolant Pumps
Version 1
: Received: 6 July 2023 / Approved: 10 July 2023 / Online: 10 July 2023 (10:31:22 CEST)
A peer-reviewed article of this Preprint also exists.
Kanyolo, T.N.; Oyando, H.C.; Chang, C.-K. Acceleration Analysis of Canned Motors for SMR Coolant Pumps. Energies 2023, 16, 5733. Kanyolo, T.N.; Oyando, H.C.; Chang, C.-K. Acceleration Analysis of Canned Motors for SMR Coolant Pumps. Energies 2023, 16, 5733.
Abstract
Recently, SMR (Small Modular Reactor) is expected to be able to operate flexibly in conjunction with a high renewable energy penetration grid as a result of improved safety and easy power control compared to large nuclear power plants. SMRs such as South Korea’s System-integrated Modular Advanced ReacTor (SMART) are designed to use canned motors (CMs) for their reactor coolant pumps (RCPs) to enhance safety. The CMs passively enhance the reactor’s safety by preventing leakage of radioactive reactor coolant. However, with motor sizes designed to be as small as possible, and the increased air gap of CMs between stator and rotor, starting torque may be insufficiently small compared to that of similar sized induction motors (IMs). Thusly, CMs may require variable frequency drives (VFDs) to start. This paper compares the torque characteristics of CMs with those of IMs for SMART’s RCPs. ETAP is then used to perform motor starting analysis for CMs started with and without VFDs. The results are presented and analyzed to find out if the VFDs deal with the CM starting torque issue.
Keywords
motor acceleration study; reactor coolant pump (RCP); canned motors; small modular reactor (SMR); variable frequency drive (VFD)
Subject
Engineering, Electrical and Electronic Engineering
Copyright: This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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