Energy efficiency and reliability Schaffner – energy efficiency and reliability EMC Basic...

energy efficiency and reliability

Schaffner – energy efficiency and reliability

EMC Basic Information and Filter Application

電磁相容基本介紹及濾波器應用

Mike Su Sales Manager Taiwan



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Agenda

EMC Basic Introduction 電磁相容基本介紹 Filter Selection and Application

濾波器選擇及應用



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EMC Basic Introduction



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Electronic Environment ( 電子環境 )

Interaction of Equipment

Emission

Immunity



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EMC ( Electromagnetic Compatibility )

EMI

( Electromagnetic Interference )

EMS

( Electromagnetic Susceptibility )



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EMC ( Electromagnetic Compatibility )

EMI ( Electromagnetic Interference )

CISPR, FCC, IEC, EN, GB

EMS ( Electromagnetic Susceptibility )

IEC 61000, EN, GB

Conducted Disturbance

Disturbance Voltage

Discontinuous → Click

Continuous

Radiated Disturbance

Disturbance Power

Disturbance Filed Strength ( RFI )

Harmonic IEC 61000-3-2

Voltage Fluctuations and Flicker IEC 61000-3-3

Electrostatic Discharge ( ESD ) -4-2

Radiated EM Field Immunity -4-3

Electrical Fast Transient/Burst Immunity

( EFT ) -4-4

Surge -4-5

Conducted Disturbance Immunity -4-6

Power Frequency Immunity -4-8

Voltage Dips, Short Interruptions and Variations Immunity -4-11



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What is EMI?

EMI: Electromagnetic Interference ( 電磁干擾 )

Scope of EMI

-Malfunction of Control System ( 系統誤動作 )

-Immunity of Data and program processing ( 錯誤的資料或製程 )

-Motor Control

• Motor rolling without command ( 馬達在無命令下旋轉 )• Poor repeatability and Accuracy ( 較差的重現性及準確度 )• Command distortion ( 命令失真 )



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Basic Elements of EMI Problems

Path (Coupling) Signal Receptor

Signal Source

EMI Source

• Encoder• Amplifiers• Computer• Radio Receivers• CCD Camera

• Motion Command• Measurement signal• Protocol• Voice• Image

• Motors• Switches• Arc Welding• Engine Ignition• Lightning

耦合路徑

干擾源

信號源接收端



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Coupling (耦合 )

直流耦合

電容耦合

電感耦合



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Coupling Path

Radiated ( 輻射性 )

-Antenna to Antenna ( 天線 )

-Case Radiation ( 外殼 )

-Case Penetration ( 穿透 )

-Field to Wire ( 場對線 )

-Wire to Wire ( 線對線 )

-Field to Field ( 場對場 )

Conducted ( 傳導性 )

-Command Ground Impendence

( 共地阻抗 )

-Power Line ( 電源線 )

-Interconnecting Cable ( 連接電纜 )



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Types of interference

CM :noises between line and earth ( 共模干擾 )

DM :noises between lines ( 差模干擾 )



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Differential mode noise

RL

L

N

PE

Common mode noise

RL

L

N

PE



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Power quality – Efficiency for electric and electronic systems

PQ technology assures smooth sine waves for voltage and power, increasing efficiency and reliability of electric power systems and electricity grids.

Power sine curve

Elimination of reactive power with power quality products

Improving sine wave curve with sine wave filters

利用電力品質產品消除突波突降

採用正弦濾波器改善正弦曲線



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EMC & Power quality supports efficiency and reliabilityfor electric and electronic systems

EMC and PQ technologies eliminate electromagnetic disturbances: Assure smooth sine curves for voltage and power.

Voltage sine curve

Power sine curve

Improving sine wave curve with sine wave filters

Elimination of reactive powerwith power quality products

Reduction of electromagnetic noise with Schaffner filters



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Electronics is susceptible to interferences from the power grid( 電子元件是容易受到來自電力系統中的干擾所影響 )

Risk of equipment malfunction or break-down Schaffner components make electronics reliable

Power line interference

Power grid



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Electronics creates interferences harmful to other devices( 電子元件製造出的干擾影響其他的設備 )

Regulations and standards mandate use of EMC filters Schaffner components assure compliance with all relevant

regulations

Deviceinterference

Power grid



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Filter Selection and Application



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Power line filter class

Filtering from LF up to the GHz range

Harmonics

50/60 Hz to 2.5 kHz

Line reactors

Non-regulated LF-range

2.5 to 150 kHz

Reactors & EMI filters

Regulated RF-range

(9kHz)150 kHz to 30MHz

EMI Filters EMI

HF-range

above30MHzAbove 1 GHz

Feed throughs



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Rating currents

Current ratings of EMI filter are determined by individual filter components. Since current flow leads to a temperature rise in passive components, the ambient temperature of the environment where the filter is to be used has a direct impact on the rated current.

Rated current @ ? °C 16A@40 °C



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Driver rating

The following table shows motor ratings up to 55kw with associated suggested filter rating



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Inside of equipment

Filter Position in Standard Equipment

For AC Mains Filter:

As close as possible to AC connection

Wrong Installation!

( 電路板與線路干擾 )



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Inside of equipment

Filter Position in Standard Equipment



Correct Installation!



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ControlPanel

Filter Position in Control Panels



Wrong Installation!

( 線路與線路間輻射傳導 )

MMAC Mains

Mains switch



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ControlPanel


M

AC MainsFor AC Mains Filter:


Correct Installation!

Mains switch



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ControlPanel


Additional safety requirements! M

AC Mains



Case by Case….

Mains switch



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Example: cable coupling ( 線路耦合 )



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Example: cable coupling

Mass cable and no filter



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Mass cable and with filter



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Cable clear up with filter ( 線路整理 )



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Filter Grounding

Filter

Painted Enclosure

Remove paint將漆面移除

Filter



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Filter Grounding

Filte

r

Filter

Filter

Braided cable較粗較短地線



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Example: filter grounding



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Pig tail grounding- cable 30cm



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Short cable-5cm



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Correct method



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Schaffner counts most of the large manufacturersof power electronic devices as customers for EMC filters ...

Motordrive Motor

EMC filter

Electroniccontrol

EMC filter

Line Load



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... together with complementary power quality products Schaffner is creating the strongest total solution

Motordrive Motor

EMC filter

Electroniccontrol

EMC filterTransformerHarmonics

filter

Line

Output filter

Load



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Schaffner – your EMC & PQ solution provider

Problem analysis1

Engineering

2

Worldwide support4

Innovative products

3

YourEMI & PQProblems

Energy efficiency and reliability Schaffner – energy efficiency and reliability EMC Basic...

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