Industrial Electrical Engineering and Automation © Per KarlssonSmall Signal Modelling and Analysis of DC Distributed Power Systems

Slides:

Advertisements

Similar presentations

Components, Quantities, and Units

Advertisements

ELECTRIC DRIVES CONVERTERS IN ELECTRIC DRIVE SYSTEMS MODULE 2

A 2-day course on POWER ELECTRONICS AND APPLICATIONS (DC Motor Drives) Universiti Putra Malaysia August, 2004 Dr. Nik Rumzi Nik Idris Department.

GENERAL ELECTRICAL DRIVES

Zener effect and Zener diode –When a Zener diode is reverse-biased, it acts at the breakdown region, when it is forward biased, it acts like a normal PN.

Three Phase Controlled Rectifiers

Lecture 101 Introduction to Energy Storage Elements: The Capacitor.

Direct-Off-Line Single-Ended Forward Converters and The Right-Half-Plane Zero Presented by: Geetpal Kaur EE136 Student 12/06/2003.

Power Electronics Lecture-1 Introduction Dr. Imtiaz Hussain

Fundamentals of Power Electronics 1 Chapter 19: Resonant Conversion Outline of discussion DIRECT MODELING APPROACH 1.How small-signal variations in the.

Dr. Nik Rumzi Nik Idris Department of Energy Conversion FKE, UTM

ET 332a Dc Motors, Generators and Energy Conversion Devices 1.

Components, Quantities, and Units

Electricity Unit Overview Thursday, April 2, 2015.

INTRODUCTION TO POWER ELECTRONICS Dr. Shahab Ahmad Niazi

D ESIGN AND I MPLEMENTATION OF THE D IGITAL C ONTROLLER FOR A F UEL C ELL DC-DC P OWER C ONVERTER SYSTEM O.A. A HMED, J.A.M. B LEIJS.

CHAPTER 18 Power Supplies. Objectives Describe and Analyze: Power Supply Systems Regulation Buck & Boost Regulators Flyback Regulators Off-Line Power.

POWER PLANT USED IN TELECOM

Electrical Power J. Mitchell for AE-210. What Does Electrical Power Do? Provides Energy for Buildings Provides Energy for Buildings Usually all except.

We’ll show you how you can determine the voltage supplied by different arrangements of cells in an electrical circuit.

Renewable Energy DDP. Solar Energy The Sun produces radiant energy by consuming hydrogen in nuclear fusion reactions. Solar energy is transmitted to the.

PWM Dc-to-Dc Power Conversion

18-1 Copyright © 2003 by John Wiley & Sons, Inc. Chapter 18 Utility Interface Chapter 18 Utility Interface Power quality has become an important issue.

Parul Institute of Engineering & Technology Name of Unit : Diode And Its Applications___________ Topic : BRIDGE RECTIFIER_________________________ Name.

ELECTRICAL ENGINEERING Principles and Applications THIRD EDITION ALLAN R. HAMBLEY ©2002 Prentice-Hall, Inc. Chapter 1 Introduction Glen Archer Room 730.

Rectification. AC to DC Electricity distribution –Power stations –Transformers –Transmission lines AC Electronics DC –Smooth –Stable.

14/06/2004NORPIE Paralleling of 3-phase inverters a part of my PhD study: "Control and monitoring for distributed power supply“ which is a part of.

ELECTRICAL ENGINEERING: PRINCIPLES AND APPLICATIONS, Third Edition, by Allan R. Hambley, ©2005 Pearson Education, Inc. Chapter 1 Introduction.

SEMICONDUCTOR DEVICES AND MICROELECTRONICS. Rica Paquio III- Galileo.

June 11, 2010NATIONAL POWER ELECTRONICS CONFERENCE1 A HARDWARE GRID SIMULATOR TO TEST GRID-CONNECTED INVERTER SYSTEMS ARUN KARUPPASWAMY B DR.VINOD JOHN.

Dc bus for photovoltaic power supplying computing loads 4 th year Electronic Engineering Michael ikerionwu.

1. Unit I: Semiconductor Diodes and Applications Before we start with Electronics Let us review the Basics of Electricity Q. What are the two main quantities.

INTRODUCTION TO ELECTRICAL AND ELECTRONICS ENGINEERING Sakarya Üniversitesi Teknoloji Fakültesi Elektrik Elektronik Mühendisliği Bölümü T4 Blok Introducing.

Electricity Unit Overview Wednesday, April 1, 2015.

A power supply is a device that supplies electrical energy to one or more electric load. The term is most commonly applied to devices that convert one.

Basic Equipment and Schematic Reading. Objectives Learn the basic equipment that will be used in the Lab. Learn some of the basic symbols used on electrical.

Introduction to DC-DC Conversion – Cont.

Electrical Current and Circuits How Electricity Gets To Where It Is Going.

Zener Diode Circuits for Power Supply Designs Section 4.4.

Diode Rectifier Circuits Section 4.5. In this Lecture, we will:  Determine the operation and characteristics of diode rectifier circuits, which is the.

Overview of Electrical Engineering Madeleine Andrawis, Ph.D., Professor, Electrical Engineering and Computer Science Department South Dakota State University.

Diode rectifiers (uncontrolled rectifiers)

Electricity Power/Energy Basics: In US household electricity is 120 volts AC – 60 cycles (therefore most appliances and electronic equipment require this.

TRANFORMERS & DC MACHINES BY: PRATIK SINGH ( ) MANISH K ROY ( ) GAGANDEEP SINGH PANESAR ( ) PARSE SANDEEP ( )

1 Decentralized Adaptive Voltage Control with Distributed Energy Resources Presenter: Huijuan Li.

1-1 Copyright © 2003 by John Wiley & Sons, Inc. Chapter 1 Introduction Chapter 1 Power Electronic Systems.

Inverter Digital Electronics Project Institute of Physics University of Sindh Jamshoro.

From Lecture1 vi , ii vo , io Power Processor Controller Source Load

Bridge Rectifier Electrical Engineering and Industrical Electronics

INTRODUCTION TO POWER ELECTRONICS

Introduction to Power Electronics EELE 5480 — Fall Semester 2017

Rectifiers, Filters and Regulator

AUTOMATIC STREET LIGHT CONTROL USING LDR

iuyoiuyiouy Erik Hoff, Tore Skjellnes, prof. Lars Norum

EE 442 POWER ELECTRONICS I Introduction Dr. Said A. Deraz

Switching DC Power Supplies

Visit for more Learning Resources

Presented by: paul konz, P.E. jeff martin jonathan belanger

INTRODUCTION TO POWER ELECTRONICS

Chapter 1 Introduction Recognize interrelationships of electrical engineering with other fields of engineering. 2. List the major subfields of electrical.

CHAPTER 10 Power Supplies.

Anna Brinck, M.S. Student Robert Cuzner, Assistant Professor

From Lecture1 vi , ii vo , io Power Processor Controller Source Load

Inverters Converting dc to ac

Power Supplies AIM: To understand the simple power supply in terms of the transformer, rectification, smoothing and regulation. PRIOR KNOWLEDGE: A.C.

Introduction to Power Electronics EELE 5480 — Fall Semester 2018

Single-Phase Uncontrolled Rectifiers Chp#5

Power Semiconductor Systems I

Diode rectifiers (uncontrolled rectifiers)

Presentation transcript:

Industrial Electrical Engineering and Automation © Per KarlssonSmall Signal Modelling and Analysis of DC Distributed Power Systems Per Karlsson Small-Signal Modelling and Analysis of DC Distributed Power Systems

Industrial Electrical Engineering and Automation © Per KarlssonSmall Signal Modelling and Analysis of DC Distributed Power Systems Presentation Outline Introduction DC power distribution DC bus voltage control Small-signal modelling Small-signal models compared to previous work

Industrial Electrical Engineering and Automation © Per KarlssonSmall Signal Modelling and Analysis of DC Distributed Power Systems Energy Supply in the Future

Industrial Electrical Engineering and Automation © Per KarlssonSmall Signal Modelling and Analysis of DC Distributed Power Systems Renewable Energy Sources & Distributed Generation Several renewable energy sources need assistance from power electronics Most consumer and office electronic equipment operate on rectified AC  DC might as well be used for local distribution systems

Industrial Electrical Engineering and Automation © Per KarlssonSmall Signal Modelling and Analysis of DC Distributed Power Systems DC Distributed Power System Ring Bus

Industrial Electrical Engineering and Automation © Per KarlssonSmall Signal Modelling and Analysis of DC Distributed Power Systems Droop DC Bus Voltage Control

Industrial Electrical Engineering and Automation © Per KarlssonSmall Signal Modelling and Analysis of DC Distributed Power Systems Converter Bode-Diagrams Bode diagram of the closed loop system from i d,ref to i q. Bode diagram of the closed loop system from i q,ref to i q. Solid: dead-beat gain (k i = 1), Dashed: half dead-beat gain (k i = 0.5) Dash-dotted: 25% of dead-beat gain (k i = 0.25).

Industrial Electrical Engineering and Automation © Per KarlssonSmall Signal Modelling and Analysis of DC Distributed Power Systems Constant Power Load - Negative Small-Signal Resistance

Industrial Electrical Engineering and Automation © Per KarlssonSmall Signal Modelling and Analysis of DC Distributed Power Systems Two-Converter System Bode-Diagrams Bode diagram for the complete system from i qr,ref to v s for R dc = 1.0  and L dc = mH Note that the transformers needed for galvanic separation are not included in the small-signal model!

Industrial Electrical Engineering and Automation © Per KarlssonSmall Signal Modelling and Analysis of DC Distributed Power Systems Droop DC Bus Voltage Control Dynamic Properties of the Two-Converter System Measured (left) and simulated (right) sending end (blue) and receiving end (red) voltage (top) and power (bottom), in the case of R dc =1.0 , L dc =32 mH and Z sc =0.25+j0.25 .

Industrial Electrical Engineering and Automation © Per KarlssonSmall Signal Modelling and Analysis of DC Distributed Power Systems Small-Signal Modelling vs Switch Mode Modelling and Measurements Sending end voltage in the case of R dc =1.0  and L dc =32 mH. Green: Experiment, Blue: Switch-mode simulation Red: Small-signal simulation The dominant poles are the same as the ones found in earlier investigations. The converter dynamics do not have to be included in the analysis. The assumption that G conv = 1 is applicable due to the low bandwidth. A constant power load results in a unstable pole of the DC power system. The unstable node is cancelled for the closed loop system.