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AFEActive Front End

Overview

What is an Active Front End (AFE)?

Use of AFE

Product Overview

Abbreviations and Concept Declarations

Drive possibilities

Examples for calculations

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2Schneider Electric - Motion & Drives t raining - Title of the training module 23/04/2008

Altivar Active Front End

> Overview

> What is an Active Front End (AFE)

> Use of AFE

> Product Overview

> Abbreviations and Concept

Declarations

> Drive possibilities

> Examples for calculations

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3Schneider Electric - Motion & Drives t raining - Active Front End Module 1 12/2009

What is an AFE?

Active Front End

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4Schneider Electric - Motion & Drives t raining - Title of the training module 23/04/2008

Altivar Active Front End

> Overview

> What is an Active Front End (AFE)

> Use of AFE> Product Overview

> Abbreviations and Concept

Declarations

> Drive possibilities

> Examples for calculations

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Use of Active Front End

Reduce the mains current harmonics

Only sine wave input current into the AFE

with standard ATV 61/71

with Active Front End

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Use of Active Front End

Saving energy by reducing the share of reactive power

Cos (phi) und (lambda) = 1 => THDi < 4%

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Use of Active Front End

Return excess energy to the mains

Recuperative 4-quadrant operation standard

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8Schneider Electric - Motion & Drives t raining - Active Front End Module 1 12/2009

Use of Active Front End

Low Harmonic Application Examples

Pumps

Fans

Compressors

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9Schneider Electric - Motion & Drives t raining - Active Front End Module 1 12/2009

Use of Active Front End

4-Quadrant Application Examples

Crane applications (hoists, long-travels, ...)

Downhill conveyors, winches, escalators

Complex drive systems

Test benches and high dynamic drives

Pump/turbine combinations

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10Schneider Electric - Motion & Drives t raining - Title of the training module 23/04/2008

Altivar Active Front End

> Overview

> What is an Active Front End (AFE)

> Use of AFE> Product Overview

> Abbreviations and Concept

Declarations

> Drive possibilities

> Examples for calculations

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11Schneider Electric - Motion & Drives t raining - Active Front End Module 1 12/2009

Product Overview

Active Front End

Components

Line Filter Module Line Filter Choke

Active Infeed Converter

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12Schneider Electric - Motion & Drives t raining - Active Front End Module 1 12/2009

Product Overview

Power range 120860kW

Voltage Ranges

3 AC 380480V

(120675kW) 3 AC 500690V

(145860kW)

Mains frequency

50/60 Hz 5%

Power Factor Cos=1 const.

Protection degree

Built-in units IP00

Interfaces

Removable operating panel

Control terminals can be

extended

Fieldbus connection via

Modbus or CANopen

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13Schneider Electric - Motion & Drives t raining - Title of the training module 23/04/2008

Altivar Active Front End

> Overview

> What is an Active Front End (AFE)

> Use of AFE> Product Overview

> Abbreviations and Concept

Declarations

> Drive possibilities

> Examples for calculations

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14Schneider Electric - Motion & Drives t raining - Active Front End Module 1 12/2009

Abbreviations and Concept

Declarations

AFE => Active Front End

LFM => Line Filter Module

LFC => Line Filter Choke

AIC => Active Infeed Converter

ATV => Altivar(61/71)

INV => Inverter (ATV61/71)

M => Motor

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15Schneider Electric - Motion & Drives t raining - Title of the training module 23/04/2008

Altivar Active Front End

> Overview

> What is an Active Front End (AFE)

> Use of AFE> Product Overview

> Abbreviations and Concept

Declarations

> Drive possibilities

> Examples for calculations

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16Schneider Electric - Motion & Drives t raining - Active Front End Module 1 12/2009

Drive possibilitiesLow harmonic drive 1:1 application

Low harmonic drive ATV61/71 with an Active Front End in series

Spare parts of AIC and INV up to 90 % identical

THD(i)

value < 4%

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17Schneider Electric - Motion & Drives t raining - Active Front End Module 1 12/2009

Drive possibilities4-quadrant single drive 1:1 application

The same advantages as the Low Harmonic Drive

4-quadrant drive with variable energy and speed direction

E.g. at lowering a load, the energy is feed back to the mains

Changing from motor to

generator is shock free

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18Schneider Electric - Motion & Drives t raining - Active Front End Module 1 12/2009

Drive possibilitiesCommon DC bus 1:n application

Low harmonic drive advantages

Active Front End with several

Inverters via a common DC bus

link

E.g. roller conveyors, motor test

benches and group drives in

sheet metal processing

machines

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19Schneider Electric - Motion & Drives t raining - Active Front End Module 1 12/2009

Drive possibilitiesActive Front End units parallel n:n application

Several Active Front End units parallelwith several Inverters

Advantages

A higher supply / regenerating power

An increased reliability due to

redundancy The use of smaller units e.g. adapted to

the size of the inverter in order to reducethe spare parts

Depending on power demand, individualActive Front End units can be locked or

released during operation.

Connection and disconnection must beonly executed with no voltage!

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20Schneider Electric - Motion & Drives t raining - Title of the training module 23/04/2008

Altivar Active Front End

> Overview

> What is an Active Front End (AFE)

> Use of AFE> Product Overview

> Abbreviations and Concept

Declarations

> Drive possibilities

> Examples for calculations

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21Schneider Electric - Motion & Drives t raining - Active Front End Module 1 12/2009

Examples for calculationsExample 1: Common DC bus

Check the Inverter on p. 84 in the selection guide

for DC power

Check the capacity of both Inverters (p. 84 in the

selection guide)

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22Schneider Electric - Motion & Drives t raining - Active Front End Module 1 12/2009

Examples for calculationsExample 1: Common DC bus

Calculate the total capacity and the output power

Find the appropriate AFE for 100kW and 34mF (common DC bus: p.36 in the

selection guide)

E l f l l i

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23Schneider Electric - Motion & Drives t raining - Active Front End Module 1 12/2009

Examples for calculationsExample 2: Common DC bus

Check the Inverter on p. 84 in the selection guide for DC power

Check the capacity of all six Inverters (p. 84 in the selection guide)

E l f l l ti

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24Schneider Electric - Motion & Drives t raining - Active Front End Module 1 12/2009

Examples for calculationsExample 2: Common DC bus

Calculate the total capacity and the output power

Find the appropriate AFE for 204kW and 12mF (common DC bus: p.36 in the

selection guide)

E l f l l ti

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25Schneider Electric - Motion & Drives t raining - Active Front End Module 1 12/2009

Examples for calculationsActive Front End units parallel: 3

Check the Inverter on p. 84 in the selection guide for DC power

Check the capacity of all five Inverters (p. 84 in the selection guide)

E l f l l ti

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26Schneider Electric - Motion & Drives t raining - Active Front End Module 1 12/2009

Examples for calculationsActive Front End units parallel: 3

Calculate the total capacity and the output power

Find the appropriate AFE for 510kW and 59.5mF each (AFE units parallel:

p.50 and 51 in the selection guide)

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Motion & Drives t raining

Any

questions?

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Motion & Drives t raining

Make the most of your energyThanks!