Development Of Multi-Phase Variable Frequency Drives For The Oil & Gas Industry

الموضوعات

علوم تطبيقية وتكنولوجية

الملخص

Liquefied Natural Gas (LNG) plants rely heavily on LNG compressors exceeding 100 MW power range. These compressors are mainly driven by gas turbines and high power helper motors operated via Variable Frequency Drives (VFDs). The VFDs offer a wide range of control and flexibility to the typically large motors allowing the driven system to meet desired process operation requirements in the LNG plants. Such motor drive systems have the capability to meet the power demand required for starting very large LNG compressors and provide additional power (helper) when necessary. High performance VFDs contribute to a great extent in enhancing the performance of LNG compressors and their reliability. Various types of VFDs are available in the oil and gas industry. Their performance and reliability depend on the topology of the VFD system. To satisfy the requirement of oil and gas applications and obtain the highest dynamic performance of the drive, special considerations are taken in choosing the appropriate drive topology.This thesis presents and discusses the design of a high power multilevel and multi-phase motor drive system suitable for LNG compressor applications. Specifically, a 5-phase 5-level Neutral Point Clamped (NPC) based high power motor drive system is proposed. The proposed system was designed for a 33 MW 6.3 kV induction motor and its performances were tested and simulated under different operating conditions. It showed superior results compared to the widely and commonly used 3-phase 3-level NCP inverter. The produced phase voltage has five levels, which had reduced the voltage and current Total Harmonics Distortion (THD) significantly and provided smoother output torque with minimized torque ripples

روابط وملفات

التعريف والنوع

رقم الوثيقة

0ca9fcfa-9220-405b-98ea-ee6d0fc79159

رقم العقد

0

نوع الوسائط

Crawler

نوع المحتوى

الرسائل العلمية

صيغة المصدر

رسائل ماجيستير

نوع الملف

pdf text

أسماء الملفات

2018452_1.pdf

بيانات النشر

ألقاب المؤلفين

[{"name_ar":"عادل جستل","title_ar":"اشراف","title_en":"Supervision"},{"name_ar":"عزالدين شحادة","title_ar":"اعداد","title_en":"Preparation"}]

اللغة

English

المصدر والدورية

اسم المصدر

Development Of Multi-Phase Variable Frequency Drives For The Oil & Gas Industry

المحتوى والصفحات

عدد الصفحات

0

إشراف وإعداد

الإشراف

عادل جستل

الإعداد

عزالدين شحادة

الاقتباسات الببليوغرافية