Maritime Downloads - Free Maritime Library
Search
Categories
ALERT SERIES
ANATOMY OF THE SHIP SERIES
ASTM & BS EN STANDARDS
BOATBUILDING & BOATING
CARGO HANDLING
CLASS PUBLICATIONS
CLASS RULES & GUIDES
CREW MANAGEMENT
DIGITAL SHIP MAGAZINE
ELECTRICS AND ELECTRONICS
ENGLISH
IACS PUBLICATIONS
INTERNATIONAL CONFERENCES
LIQUEFIED GASES HANDLING
MARINE ECONOMICS & BUSINESS
MARINE ENGINEERING
MARINE INSURANCE
MARINE REGULATIONS & GUIDES
MARINE SCIENCE & OCEANOGRAPHY
MECHANICS AND MECHANICAL ENGINEERING
MISCELLANEOUS
NAUTICAL CHARTS & TABLES
NAVAL ARCHITECTURE
NAVAL FICTION
NAVAL HISTORY
NAVIGATION & SEAMANSHIP
NAVIGATION EQUIPMENT
NAVY FLEET
OFFSHORE INDUSTRY
POPULAR
P & I PUBLICATIONS
PRODUCT CATALOGUES
SERVICE AND OPERATION MANUALS - NAVIGATION EQUIPMENT & DP
SERVICE AND OPERATION MANUALS - DIESEL ENGINES
SERVICE AND OPERATION MANUALS - OTHER MACHINERY & EQUIPMENT
SHIPBUILDING & REPAIR
SHIPPING INDUSTRY
SHIPPING LAW
SHIP DESIGN & CONSTRUCTION
SHIP HANDLING
SHIP MODELING
SHIP SAFETY & SECURITY
UNDERWATER
YACHTING

V I D E O T R A I N I N G

ALERT SERIES
CARGO HANDLING
ENGLISH
HYDROSTATICS AND STABILITY LECTURES
MARINE ENGINEERING
MARINE POLLUTION PREVENTION
MARITIME LAW
MEGASTRUCTURES SERIES
MIGHTY SHIPS SERIES
NAVAL ARCHITECTURE
NAVAL HISTORY
NAVIGATION LESSONS
NAVY FLEET
OFFSHORE INDUSTRY
PERFORMANCE OF MARINE VEHICLES AT SEA LECTURES
POPULAR
SAFETY OF LIFE AT SEA
SHIP SECURITY
SHIP HANDLING
SHIPBUILDING & REPAIR

S O F T W A R E

CARGO HANDLING
ENGLISH
MARINE ENGINEERING
MARINE REGULATIONS
MISCELLANEOUS
NAVIGATION AND SEAMANSHIP
PRODUCT CATALOGUES
SCREENSAVERS
SEAGULL CBT
SERVICE & OPERATION MANUALS
SHIP CONSTRUCTION
SHIP HANDLING/MANAGEMENT
SIMULATORS
Counter
Онлайн всего: 14
Гостей: 14
Пользователей: 0
Welcome, Guest · RSS

· Main

SHAFT GROUNDING RINGS - PROTECTING VFD DRIVEN MOTORS FROM BEARING CURRENTS

Shaft Grounding Rings - Protecting VFD Driven Motors from Bearing Currents

Author(s)                 ITW
Publisher ITW
Date 2010
Pages 31
Format pdf
Size 3.3 Mb

- - - - - - download - - - - - -

   The present official supplementary reference document was specifically prepared and officially released by the  specialists of the world respected Electro Static Technology ITW and is primarily dedicated to the VFD, standing for the variable frequency drives. When the PWM VFD, i.e. pulse width modulation drives were developed using IGBTs, i.e. the insulated gate bipolar transistors, this advanced and newly presented technology was first applied to controlling electric induction motors in both commercial and industrial applications. The advantages were obvious: Torque and motor speed could now be precisely controlled to optimize both process and energy requirements, The potential to save energy by operating motors at only the required speed and, at the same time, maintaining applicable torque requirements would potentially result in a 20% to 50% energy savings, Processes can be optimized and controlled by computer processing systems to achieve productivity increases or energy savings. Nowadays, the use of these variable frequency drives is slowly getting increasingly common when making attempts to save the energy in HVAC systems and to reduce the associated energy costs. When using the VFD technology, please note as necessary that this type of motors shall always have the bearing protection in order to ensure reliability and safe operation.

Category: MARINE ENGINEERING | Views: 1068 | | Rating: 0.0/0
Total comments: 0
avatar
Copyright Libramar © 2016 Free web hostinguCoz