Important: Use custom search function to get better results from our thousands of pages

Use " " for compulsory search eg:"electronics seminar" , use -" " for filter something eg: "electronics seminar" -"/tag/" (used for exclude results from tag pages)
Ask More Info Of  A Seminar Ask More Info Of A Project Post Reply  Follow us on Twitter
04-04-2011, 03:36 PM
Post: #1
A DSP based on on-line UPS
Presented by:
R.Padamaja
G.Mamatha Reddy


.ppt  A DSP based on on-line UPS sc.ppt (Size: 315.5 KB / Downloads: 184)
INTRODUCTION:
Un-interruptible power supplies (UPS) play an important role in interfacing critical loads such as computers, tele-communicationlinks, data-processing systems, life supporting systems and industrial controls,e.t.c.
Among the various UPS topologies, on –line UPSs provides maximum protection to such loads against any utility power problem, as it protects against power blackout.
Because of multiple power conversion stages, online UPSs have been the most complex and expensive type of systems.
Today’s low cost, high performance Digital Signal Processors (DSPs) provide an improved and cost- effective solution for online UPS design.
Online UPS design, making them software controllable, adding some facilities like remote configuration and monitoring and other network management facilities.
Typical On-Line UPS:
A typical UPS consists of a rectifier supplied battery bank & a static inverter-filter system to convert a dc voltage to a sinusoidal an output Modern UPS systems minimize the harmonic content of the inverter output voltage through the use of complex filtering schemes employing large passive components.
Need for Pulse Width Modulation:
Online UPSs have been the most complex and expensive type of systems voltage.
Pulses are generated whenever a carrier signal & modulating signal crosses eachother.
These pulses are given to thyristors and pulsating output is generated.
Depending on the number of output pulses generated, switching frequency of inverter is determined
General PWM techniques for UPS:
1. Using Analog devices:
Analog PWM uses natural sampling technique, which compares a sinusoidal modulating wave form with a triangular wave
2. Using Microprocessors:
A digital PWM signal generator is interfaced with a microprocessor. It calculates the pulse width at every sampling instant. According to this calculated width, the pulse generator generates the pulses with a constant switching frequency.
05-04-2011, 11:30 AM
Post: #2
RE: A DSP based on on-line UPS

.ppt  DSP based online UPS_Sreevidhya@Students.ppt (Size: 309.5 KB / Downloads: 212)
A DSP Based On-line UPS
TYPICAL ON-LINE UPS
Block diagram:

PULSE WIDTH MODULATION
Different PWM techniques
DSP control of UPS systems.
Basic block diagram:
Internal architecture of DSP controller:
Merits of using DSP:
Software controllable.
Remote monitoring.
Network management.
High execution speed (30 MIPS).
Flow chart for voltage control:
DSPs vs. Microprocessors
Advantages of using DSP in UPSs:
High Reliability.
Low dimensions.
Precision.
Interactive communication.
Compact and sleek form factor.
Closing thoughts:
To include more intelligent systems in it’s architecture.
Cutting the cost by making its use extensive.
Increasing the efficiency of electronic components.
06-04-2011, 10:06 AM
Post: #3
RE: A DSP based on on-line UPS
presented by:
Lokeshkumar.M


.doc  A DSP based On-Line UPS.doc (Size: 260.5 KB / Downloads: 99)
A DSP based On-Line UPS
ABSTRACT

Many facilities such as patient health care centers, data processing systems, critical telecommunication links, LAN servers, offices etc rely on uninterruptible power supplies (UPS) to maintain a continuous supply of power in case of line outage. In addition to requiring continuous power, many critical nonlinear loads are sensitive to the incoming line transients and input harmonic voltage distortion. Conventional UPS systems operate to protect against such disturbances using complex filtering schemes, often employing large passive components. Among the various UPS systems online UPS provides maximum protection to such loads against any power problems. Because of multiple power conversion stages, online UPSs have been the most complex and expensive type of systems. Today’s low cost, high performance Digital Signal Processors(DSPs) provide an improved and cost- effective solution for online UPS design, making them software controllable, adding some facilities like remote configuration and monitoring and other network management facilities. Here I’m going to presents the basic design and merits of using real time digital signal processing (DSP) control of UPS systems.
INTRODUCTION:
Un-interruptible power supplies (UPS) play an important role in interfacing critical loads such as computers, tele-communication links,data-processing systems, life supporting systems and industrial controls,e.t.c to the power grid .Among the various UPS topologies, on –line UPSs provides maximum protection to such loads against any utility power problem, as it protects against power blackout.However,because of multiple power conversion stages, on-line UPSs have been most complex and expensive type of systems.
Today’s low cost, high performance Digital Signal Processors (DSPs) provide an improved and cost- effective solution for online UPS design.
Typical On-Line UPS:
A typical UPS consists of a rectifier supplied battery bank & a static inverter-filter system to convert a dc voltage to a sinusoidal ac output. Modern UPS systems minimize the harmonic content of the inverter output voltage through the use of complex filtering schemes employing large passive components.
Need for Pulse Width Modulation:
PWM is nothing but the control of UPS inverter switching, under feedback control to realize the desired output waveform and also to minimize the harmonic content of the output voltage. Pulses are generated whenever a carrier signal & modulating signal crosses eachother.These pulses are given to thyristors and pulsating output is generated. Depending on the number of output pulses generated, switching frequency of inverter is determined. Width of the pulses is proportional to magnitude of the output sine wave and if the number of pulses per half cycle is more, lower order harmonics will be eliminated.
General PWM techniques for UPS:
1. Using Analog devices:
Analog PWM uses natural sampling technique, which compares a sinusoidal modulating wave form with a triangular wave (from a time-base generator) to generate pulses.
2. Using Microprocessors:
A digital PWM signal generator is interfaced with a microprocessor. It calculates the pulse width at every sampling instant. According to this calculated width, the pulse generator generates the pulses with a constant switching frequency.
Then, Why DSP?
Most of the Microprocessor –aided UPS systems continue to depend on the analog op-amp controls and they lack speed required for high frequency inverter control.
Therefore, harmonics are not eliminated in the output wave form, insisting on the large output LC-filter circuit.
With the availability of low cost- high performance DSP chips characterised by the execution of most instructions in one instruction cycle, complicated control algorithms can be executed with speed, making very high sampling rate possible for digitally controlled inverters. High speed DSPs are now capable of executing over 30 million instructions per second (MIPS)
More reasons for using DSPs:
• No analog circuitry. Thus no offsets( i.e. installation & maintenance cost saved)
• High speed DSP control allows for real time harmonic cancellation.
• Flexible configuration for many power sizes.
• Sophisticated switching algorithm saving overall system costs.
• Features may be upgraded in the same hardware, to fulfill different incoming needs.
DSP control of UPS systems:
Most electronic loads served by UPS systems are non-linear and thus generate harmonic currents that must be filtered at the inverter output to reduce the distortion to acceptable levels. The DSP controlled UPS systems employs software controlled harmonic conditioners with the ability to dynamically adopt to changing load conditions for compensating load harmonics without manual intervention.
The functional block diagram is as shown below:
Thus, the application of advanced signal processing using a DSP operates to provide sinusoidal load voltages even under varying load situations, while eliminating the need of large passive filters.
28-04-2012, 02:42 AM
Post: #4
RE: A DSP based on on-line UPS
really very nice and informative topic for final year
30-04-2012, 11:27 AM
Post: #5
RE: A DSP based on on-line UPS
to get information about the topic "A DSP based on on-line UPS" full report refer the link bellow

http://seminarprojects.com/Thread-a-dsp-...n-line-ups
23-07-2012, 10:18 AM
Post: #6
RE: A DSP based on on-line UPS
A DSP Based On-line UPS


.ppt  DSP based online UPS.ppt (Size: 311.5 KB / Downloads: 30)
Role of UPS in daily life:

As an auxiliary power source in case of line outage, particularly useful to sensitive loads.
Maintains quality of the power supply i.e. eliminates harmonics.
Supplies power according to the load demand.

Different PWM techniques

Analog PWM circuits.
Using Micro-processors.
With Digital Signal Processor chips.
Significance of using DSPs:
Sophisticated switching algorithm.
Flexibility in configuration.
No analog circuitry.
Chance for up gradation.

Closing thoughts:

To include more intelligent systems in it’s architecture.
Cutting the cost by making its use extensive.
Increasing the efficiency of electronic components.
Rating A DSP based on on-line UPS Options
Share A DSP based on on-line UPS To Your Friends :- Seminar Topics Bookmark
Post Reply 

Marked Categories : dsp using online ups ppt, project report on online ups using microcontroller, sine wave generator using op amp ppt, dsp based technical seminars, seminar topic on time base generator, seminar topics for ece related to dsp, a dsp based online ups ppt for free download, dsp based technical seminar, ppt on dsp based ups, dsp based ups, online ups seminar, seminar topic based on dsp with ppt, dsp based seminar, ups inverter components ppt pdf, a dsp based online ups, dsp based online ups technical seminar, dsp based on line ups ppt by, dsp using in ups, dsp based online ups view, abstract for a dsp based online ups, dsp based online ups, dsp based onlione ups,

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


Image Verification
Image Verification
(case insensitive)
Please enter the text within the image on the left in to the text box below. This process is used to prevent automated posts.

Possibly Related Threads...
Thread: Author Replies: Views: Last Post
  Adaptive Optics in Ground Based Telescopes mkaasees 0 0 03-09-2016 10:19 AM
Last Post: mkaasees
Thumbs Up DTMF BASED INDUSTRIAL AUTOMATION APPLIANCE CONTROL SYSTEM projectsofme 6 13,280 07-04-2016 02:34 PM
Last Post: dhanabhagya
  A Survey for Cordic Algorithms for FPGA based Computer dhanabhagya 0 323 23-02-2016 03:25 PM
Last Post: dhanabhagya
  HOME BASED PORTABLE LOW COST HEALTH INFORMATION MONITORING SYSTEM dhanabhagya 0 204 27-01-2016 11:02 AM
Last Post: dhanabhagya
  Microcontroller-Based Tachometer dhanabhagya 0 236 25-01-2016 03:46 PM
Last Post: dhanabhagya
  Non-Micro controller based projects dhanabhagya 0 136 19-01-2016 11:07 AM
Last Post: dhanabhagya
  Density based traffic light system dhanabhagya 0 279 14-01-2016 03:17 PM
Last Post: dhanabhagya
  A HLAR and Key Exchange Protocol based Secure VANET with Low Routing Overhead dhanabhagya 0 178 06-01-2016 04:05 PM
Last Post: dhanabhagya
  Parasitic Series Resistance For 4H-SiC And Diamond Based IMPATT Diode dhanabhagya 0 241 02-01-2016 11:32 AM
Last Post: dhanabhagya
  SMS BASED REMOTE CONTROLLING OF HOME APPLIANCES dhanabhagya 0 329 26-12-2015 02:50 PM
Last Post: dhanabhagya
This Page May Contain What is A DSP based on on-line UPS And Latest Information/News About A DSP based on on-line UPS,If Not ...Use Search to get more info about A DSP based on on-line UPS Or Ask Here

Options: