POWER ELECTRONICS IN SHIP PROPULSION ELECTRIC MOTORS
#1

[attachment=5646]


NTRODUCTION:

The predominant type of prime movers for DP propulsion plant is Electric Drive.


The most commonly used motor drives are:


DC converters, or SCR for DC motors.

Cyclo converters for AC motors ,normally for Synchronous motors .

Current Source Inverters (CSI) for Ac motors (Synchronous Motors )

Voltage Source Inverters ,(VSI)for AC motors ,i.e. asynchronous,
Reply
#2

POWER ELECTRONICS IN SHIP PROPULSION ELECTRIC MOTORS

[attachment=17144]

INTRODUCTION :

The predominant type of prime movers for DP propulsion plant is Electric Drive .Practically every DP propulsion device installed in newly constructed vessels as well as in most of the conversions is driven by an electric motor. In recent years, variable speed AC Drives has become available and has been used in some applications for DP propulsion. The most commonly used motor drives are:
DC converters, or SCR for DC motors.
Cyclo converters for AC motors ,normally for Synchronous motors .
Current Source Inverters (CSI) for Ac motors (Synchronous Motors )
Voltage Source Inverters ,(VSI)for AC motors ,i.e. asynchronous ,synchronous and permanent magnet synchronous motors.


SCR CONTROLLED DC DRIVE AND FIXED PITCH PROPELLER

Ac controlled produced by Diesel generators at constant voltage (600 VDC max) and frequency.
A fixed pitch propeller is driven by the DC propulsion motors .Varying the propeller RPM and reversing the rotation of the propeller shaft allow the thrust to be controlled in magnitude and direction.

DISADVANTAGES:
The limitation of voltage (max voltages are 600V AC/750V DC) =>leads to heavy, expensive motors , cables runs .
Commutator wear =>higher maintenance requirements of the DC motors.
Practical limit for DC motor drives is 2-3 MW.
The power factor will vary from 0-0.92(α =15 degrees) – correspondent to 0-100% propeller rpm.

APPLICATIONS:
Introduction of the high current SCR in the late 1960s, the AC/DC electric propulsion drive has become quite popular.
Vessels with this type of propulsion include fishing trawlers and factory vessels, research vessels, ice breakers, off shore supply vessels, conventionally moored and dynamically positioned drill vessels, and semisubmersibles .

Reply

Important Note..!

If you are not satisfied with above reply ,..Please

ASK HERE

So that we will collect data for you and will made reply to the request....OR try below "QUICK REPLY" box to add a reply to this page
Popular Searches: ship csx, power poin presentation on nuclear marine propulsion, flexible ship electric system ppt, flexible ship electric power system design, ship blueprints, flexible ship electric power system design pdf, tamil essay on electric motors,

[-]
Quick Reply
Message
Type your reply to this message here.

Image Verification
Please enter the text contained within the image into the text box below it. This process is used to prevent automated spam bots.
Image Verification
(case insensitive)

Possibly Related Threads...
Thread Author Replies Views Last Post
  Transparent electronics full report seminar surveyer 8 24,353 04-04-2018, 07:54 AM
Last Post: Kalyani Wadkar
  Electronics Seminar Topics List computer science crazy 259 173,233 11-05-2016, 03:44 PM
Last Post: seminar report asees
  Wireless Power Transmission via Solar Power Satellite full report project topics 32 50,215 30-03-2016, 03:27 PM
Last Post: dhanabhagya
  UNINTERRUPTIBLE POWER SUPPLIES ppt seminar surveyer 2 4,533 30-03-2015, 11:29 AM
Last Post: seminar report asees
  Electronics seminars lists10 computer science crazy 169 91,157 28-03-2015, 10:07 AM
Last Post: seminar report asees
  LOW POWER VLSI On CMOS full report project report tiger 15 22,191 09-12-2014, 06:31 PM
Last Post: seminar report asees
  BROADBAND OVER POWER LINE (BPL) seminar projects crazy 39 27,335 30-08-2014, 01:10 AM
Last Post: Guest
  ARTIFICIAL NEURAL NETWORK AND FUZZY LOGIC BASED POWER SYSTEM STABILIZER project topics 4 6,139 28-02-2014, 04:00 AM
Last Post: Guest
  MICROCONTROLLER BASED AUTOMATIC POWER FACTOR CONTROLLING SYSTEM projectsofme 2 5,590 20-07-2013, 10:39 AM
Last Post: Mitesh Diwakar
  Low Power Wireless Sensor Network computer science crazy 4 5,737 30-04-2013, 10:04 AM
Last Post: computer topic

Forum Jump: