MV 36

Document Sample
MV 36 Powered By Docstoc
					Trends in MV Drive systems

a presentation by

SIMOVERT
DRIVE SYSTEMS PRODUCT OVERVIEW

MASTERMASTERDRIVES
45 - 1500 kW (4000 kW)

MV
550 - 3400 kW (7200 kW)

S
2500 - 100000 kW

D
1500 - 100000 kW

Low voltage inverters 230 - 690 V

Air/water cooled

Medium voltage inverters 2.3 kV / 3.3 kV / 4.16 kV / 6 kV / 6.6 kV Air/water cooled

Medium voltage inverters 1.0 - 23.0 kV

Medium voltage inverters 1.35 - 23.0 kV Air/water cooled

Air /water cooled

Drive Systems - Basic Principles
Voltage Source Inverter (VSI)
Product Overview Drive Systems 1 Drive Systems 2 The Driving Force Examples The Drive System • Components • The Power Section • The Control System • The Excitation System • The Cooling System Conclusion Details / Drive Components
SIMOVERT MasterDrives SIMOVERT MV SIMOVERT S
SYM ASM
IG

Load Commutated Inverter (LCI)

ASM

SYM

Drive system components – voltage source
2.3...36 kV 3~ 50/60 Hz

Circuit-breaker

Inverter transformer

Line-side rectifier DC link with capacitors

We take care of all drive components

Motor-side inverter

Combined motor-side CT / PT Sinusoidal EMC output filter (option) Squirrel-cage induction motor with medium-voltage winding
IM

Drive Systems Components – Current source

or

Product Overview Drive Systems 1 Drive Systems 2

Examples The Drive System • Components • The Power Section • The Control System • The Excitation System • The Cooling System
SM

We take care of all drive components

Conclusion Details / Drive Components

Development Of The Power Components
HVIGBT
MOS Tran FET sisto r
LVIGBT

IG C T

sym GTO .

asym . GTO

Thyris tor

fasthing switc iode D

Diode
Bipola r Trans istor
Transistor

Mercuryvapor rectifier

Fit for the future:

HV-IGBTs

Progress of Power Semi-Conductors

Index Drive System Design Principle of the 3-Level Inverter Comparison 2-Level and 3-Level Inverter SIMOVERT MV for 6 / 6.6 kV HV-IGBT Comparison of Power Semiconductors

technology and its propagation

HV-IGBT
bipolar transistors

LV-IGBT

GTO thyristor

IGCT SGCT fast switching diode

mercury arc rectifier
60s

silicon diode
70s 80s

90s

00s
time

HV-IGBT Fit For The Future And Reliable

• ! ! ! • ! ! !

No snubber circuitry compact modular service-friendly Intrinsically current limiting no output filter high reliability short-circuit proof inverter

IGBT

• Can be simply gated ! few power components ! high reliability HV-IGBTs - -the optimum power semiconductor - -the component HV-IGBTs the optimum power semiconductor the component for the future for the future We are technological pacemaker and market leader worldwide in the We are technological pacemaker and market leader worldwide in the development development and production of HV ––IGBTs (SIEMENS / /EUPEC) and production of HV IGBTs (SIEMENS EUPEC)

Comparison Of Power Semiconductors

HV-IGBT Low gating power Can be simply gated, few power components

GTO High gating power Complex gating, many power components

Hard-switching GTO (IGCT) High gating power Complex gating, many power components

Current-limiting Short-circuit proof inverter without any additional circuitry

Not current-limiting Short-circuit proof inverter only with additional circuit (an output filter is required)

Not current-limiting Short-circuit proof inverter only with additional circuitry (an output filter is required)

Absolutely no snubber circuitry required

Snubber circuitry required

di/dt snubber circuitry required

Leading-edge HV-IGBT - tested and well-proven

Control Characteristics of HV-IGBT and IGCT
approx. 800 A

approx. 1000A/"s

IGCT

gate current

• low turn-on and turn-off current • no on-state current in the respective condition simple and reliable control!

approx.5A approx.5A

IDG 4A

HV-IGBT t ("s)
approx. 6000A/"s

Iload

3-Level Medium-Voltage Inverter

Line-side rectifier

DC link

3-level inverter

+
3-ph. 2.3 - 36 kV AC 50/60 Hz

0

1 Hz

50/60 Hz DC
M 3~

100 Hz

Comparison, 2-Level / 3-Level Voltage-Source DC Link Converter

Phase-phase voltage U1
+
Ud

2-level inverter

-

A 3-level inverter B C D E
load current
Ud

(+) (0) (–) (+) (0)

+
0

-

Load current
0 5 10 time[msec] 15 20

3-Level Output Inverter

DC link

3-level inverter
V1

+
L1 L2 L3

V2

0
V5

V6

t1

U1 L1 L2 L3

Air or Water Cooling for all Ratings

Index Customer Benefits Requirements Product Overview The Standard All Branches All Applications Air or Water Cooling Power Range Supply Voltage For all Motors Basic Technical Figures

HV-IGBT Power Cards

air cooling

water cooling

Voltage 2.3 kV 3.3 kV 4.16 kV 6.0 kV 6.6 kV

Range in kW 640 to 2040 810 to 2560 1070 to 7500 550 to 1640 550 to 1640

Simovert S Current source Converter
Conclusion Details / Drive Components

Drive Systems Components – Current source

or

Product Overview Drive Systems 1 Drive Systems 2

Examples The Drive System • Components • The Power Section • The Control System • The Excitation System • The Cooling System
SM

We take care of all drive components

Conclusion Details / Drive Components

SIMOVERT S – Current source
Basic Power Circuitry
Product Overview

• simple design • only few components • extremely reliable and robust maintenance-free, fuseless

The Driving Force

• isolated (ungrounded)
Examples The Drive System • Components

• short-circuit proof • integrated dc link reactor • water or air-cooled • compact, complete • inherent 4-quadrant operation
SM

• The Control System

• The Excitation System

• world-wide tele-service via modem
• The Cooling System Conclusion Details / Drive Components

Comparison SIMOVERT S - DC Drive
Product Overview Drive Systems 1 Drive Systems 2 The Driving Force Examples The Drive System • Components

SIMOVERT S SIMOVERT S

DC Drive DC Drive

transformer transformer

transformer transformer

rectifier rectifier electronic electronic commutator commutator

rectifier rectifier mechanical mechanical commutator commutator

• The Control System • The Excitation System • The Cooling System Conclusion Details / Drive Components

Simovert S : Main Characteristics

• • • • • • Examples • • • • Components • • • The Control System • • The Excitation System
• The Cooling System Conclusion Details / Drive Components

lowest number of components most robust switching elements (thyristors) highest efficiency simple power section circuitry fault tolerant (due to special dc link reactor arrangement®) unlimited output power can be realized (above 100 MW) easy to handle no dV/dt stress on motor windings inherent 4–quadrant operation inherent ride-through capability of up to 3 sec blackouts inherent immediate restart after power failure safe and simple synchronization of large synchronous motors (starting converter) last but not least: longest experience - proven technique

Starting Sequence of a Starting Converter

SIMOVERT S STARTING CONVERTER

SE

Simadyn D for soft-starter SD AUR

Simadyn D for process control communication SD AK

paralleling unit PSG

SA

SN

SA

SN

SM 1

SM 2

SErr

SErr

SIMOVERT S STARTING CONVERTER - Starting Sequence

START command from PCS START command to soft starter CLOSE command to breaker n
Simadyn D D for soft-starter soft-starter SD AUR AUR

Simadyn D D for process process control control communicommunication SD AK AK

Drive Systems 1
paralleling unit PSG

t CLOSE command to motor line breaker OPEN command to breaker
excitation controller SM 1 SM

motor is on line

SIMOVERT S High–Speed Gas Compressor Drive 65 MW
Drive Systems 1 Product Overview Drive Systems 2 The Driving Force Examples The Drive System • Components

• The Control System • The Excitation System • The Cooling System Conclusion Details / Drive Components

8m

Application Areas • In waterworks and water treatment plants. - Pumps for drinking water recovery and water distribution plants Slurry Pumps. • In Oil and natural gas Industry. - Pumps and compressors. • In Foodstuff Industry. - Centrifugal drives, Pumps, mixers, mills, Extruders. • In Marine engineering. - Propeller drives, bow thrusters. • In cement Industry. - Conveyor belt systems, blowers and crushers. • In open pit mining - Conveyor belt systems, Vibrators, excavators, crushers • In Power Utilities: - Pumps, blowers, coal crushers

Applications for Major Industry Sectors
Petrochemicals/ Fertilizers

Power Generation

Cement

Steel

•Induced Draft / Forced Draft Fan, Primary Air Fan •Boiler Feed Pump •Circulating Water Pump •Condensate Extraction Pump •Air Compressors •Coal Handling Plant •Ash Handling Plant

• Raw Mill Fan • Raw Electrostatic Precipitator Fan • Preheater Fan • Calcinar Fan • Cement Mill Fan • Coal Mill Fan

•Descaling Pump •Waste Gas Fan •Ladle Furnace Fan •Induced Draft Fan at LD Furnace •Crusher

• Pumps, Compressors for Cooling Tower, Heat Exchanger • Induced Draft / Forced Draft Fan used in Distillation and Furnace area • Pumps for pipelines

Captive Power plants (CPP) for core sectors (mainly for CPPs >30MW )

An optimum solution for low rating MV motors (<1 MW)

Need for HLH Soultion
# There exists large installed base of motors of ratings 200KW & above in MV range in major industries # Majority of these motors are utilised for fan & pump applications having good energy savings potential # Big requirement of retrofitting these applications with VFD to achieve energy savings # Offering MV drives for such low ratings is very uneconomical

#

H-L-H is ideal cost effective solution for such retrofit cases

Schematic for HLH configuration
Step-Down Transformer kV/V

Υ

12-Pulse Rectifier

Inverter Output Sine Filter Step-Up Transformer V/kV MV/HV Motor

Y

M

Single Line Schematic of Installed System

3 Phase, 11kV, 50Hz

VCB0 (Existing)

VCB1 Step-Down Transformer 11kV/1.7kV-1.7KV

Υ

Incoming Rectifier DFE Diode Front End 3-Level Inverter with HV-IGBT’s 3.3kV SIMOVERT MV Drive System

VCB3 (Bypass Breaker)

Step-Up Transformer 3.3kV/11kV

Y

VCB2
M


				
DOCUMENT INFO
Shared By:
Categories:
Stats:
views:265
posted:11/19/2009
language:English
pages:15