Sarah Rönnberg, Mats Wahlberg, Math Bollen Luleå University of Technology, Sweden

Total conducted emission from a customer in the frequency range 2 to 150 kHz with different types of

lighting

Sarah Rönnberg, Mats Wahlberg, Math Bollen Luleå University of Technology, Sweden

RÖNNBERG-SE-S2-0173 1

Frankfurt (Germany), 6-9 June 2011

Introduction

Domestic customer Equipment commonly used in Swedish homes

were installed at a test site. A total of 32 lamps were connected

Hotel A total of 563 incandescent lamps in 76 rooms

were replaced mostly LED lamps but also some CFL lamps

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Four scenarios for a domestic costumer

Past All lamps are incandescent

Present Lamps are a mix of incandescent and CFLs

Future Lamps are a mix of CFLs and LEDs

Far Future All lamps are LEDs



108 min load pattern

4

3 m

in

3 6 9 12 15 18 21 24 27 30 33 36 39 42 45 48 51 54 57 60 63 66 69 72 75 78 81 84 87 90 93 96 99 102

105

108

light 1light 2light 3Comp, tvMicrodishwasherstoveheatingrefrigerator

Light 1, 2 and 3 were replaced for the four scenarios. All other equipment remained the same.

RÖNNBERG-SE-S2-0173


Root sum square of all components in thecurrent between 2 and 9 kHz for the four scenarios



95% value of the current 9-95 kHz for the four different scenarios



Emission from a group of lamps



Emission from the hotel 2 to 9 kHz



Emission from the hotel 9 to 70 kHz



Conclusions

CFLs and LEDs emit high frequency currents, as do other customer equipment

Customer equipment can also shunt high frequency currents

The emission seems to propagate between equipment to a higher degree than towards the grid



Thank you


Sarah Rönnberg, Mats Wahlberg, Math Bollen Luleå University of Technology, Sweden

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