enlight public presentation smartlighting2015 conf v5...Smart Lighting Conference | Berlin | Frank...

Smart Lighting Conference | Berlin | Frank van Tuijl | Public | 20 May 2015 | Slide 1

Frank van Tuijl – Program Coordinator

SmartLighting conference 2015

Berlin

Energy efficient & intelligent lighting systems

EnLight

A distributed, rules based lighting control system demonstrates significant energy savings with optimal user comfort


Content

1. Project introduction2. Key innovation areas3. Architectural choices4. Intelligent Luminaire 5. Demonstration Pilots 6. Energy saving & comfort results7. Conclusions


Project aim

To reduce energy consumption by 40% comparedto LED retrofit systems by:

• Energy efficient light source: -20%– Electrical efficiency – Integrated drivers

– Power supply– Communication & control

– Optical efficiency – Higher LOR– Thermal efficiency – Lower Tj

• Intelligent control: -20%:– The right light,– at the right amount– at the right place– at the right time

Applications & energy saving strategies:

Controlsystem


Consortium

27 Partners3½ Years, Jun 2011- Nov 2014

ENAS,

IIS/EAS

IZM


Distributed intelligence

The paradigm of ‘Control by configuration’:

• Luminaires act autonomously instead of being instructed • Sensors inform luminaires instead of controlling them• The luminaire’s behavior (set of rules) is configured, not hard-coded

Individual Luminaires make their own lighting decisions based upon: • Presence or ambient light level information from embedded sensors• Events from other nodes (external sensors, luminaires, user controls, …)


Modular intra -luminaire architecture

.

Modular intra-luminaire architecture with standard Plug-and-play bus interface to decouple lifecycles of independent technologies.

Enables market players to contribute, differentiate and compete.


Architectural choices

Project Objectives

- Reduce energy consumption

- Improve user comfort

- Easy to install/maintain

Requirements

- Granular control

- Granular sensing

- Reconfigurable application

- Wireless/wired connectivity

- Reliable operation

- Color control

- Data collection

- Low cost

-

Choices

- Autonomous luminaires

- Local control

- Local sensing

- Local monitoring

- Priority driven control

- Rule base behavior

- Publish/Subscribe

- ZigBee/IP

- MySQL database

To arbitrate

between different

control strategies

Effective with low

footprint

Loose coupling,

scalable network


Why distributed control?• Scalability:

– Investments, complexity and intelligence grow linear with number of nodes

• Modularity and extensibility:– Nodes can be easily added, changed and (re-)configured – Enables luminaire differentiation in functionality and performance

• Effectiveness and reduced complexity:– Less complex commissioning when using local embedded sensors– Granular sensing and control increase overall energy efficiency

• Robustness:– No single point of failure but graceful degradation when node fails

• Cost effective:– Marginal cost increase for digital connected luminaire (Moore’s law)– Eliminates the need for central lighting controller and area/group controllers

Note 1: A distributed control architecture does not prohibit centralized controlNote 2: Lighting management remains centralized


Power supply

LED Light Engines

PIR/LL sensors 3D sensor Bolometer Radar sensor Smart device Switches

Buck driverBoost driver

Embedded PIR/LL/temp sensorsController

Level:

1. System

2. Fixture

3. Module

Intelligent Luminaires

External sensors local user controls

Building blocks


Highlight ILB modules• LED drivers: Compact 3- and 4-channel

based on NXP’s UBA3070 (buck) and UBA3077 (boost), >95% efficiency, expandable

• Embedded controller based on NXP’s existing Jennic processor family (JN5168)

• Embedded sensors : Combined PIR, light level and temperature sensors

• Power-supplies: 20W and 75W with high efficiency up to 94% over dimming range, +24V+5V, galvanic isolation, standby power mode


Intelligent PowerBalance

4-channel concept:CW/WW/Blue/Amber

16x

2x3ch

WW

A

CW

BIn

tra-

lum

inai

re

bus


Intelligent Luminaire features

• Local rule based engine

– 250 rules

– Programmable over the air

• 250 presets, 16 priority levels

• Independent Color control and Dimming

• Multiple independent LED light engines

• Sensors: PIR / Light Level / Temperature

• Closed loop light level control

• ZigBee

• Local logging of presence and energy consumption (24 hours)

• Intra-luminaire bus ready

Intra-luminaire bus


Luminaires examples

• Intelligent (mini) PowerBalance– Recessed luminaire– 4-channel LED strings (CW/WW/Amber/Blue)

for tunable white applications – Integrated PIR/light level/temperature sensor

• Wedge– Expandable RGBW decorative tile – Independent control per tile

• Intelligent Glow– Suspended luminaire – Independent task and ambient light (RGBW) – Integrated PIR/light level/temperature sensor

.


Demonstrations

• Office1 @Philips Lighting, Eindhoven– Areas: Corridor, Open Office, meeting room

• Office2 @VTT, Oulu– Multi-functional area: Office, meeting

room, demonstration space

• Hospitality @ Osram, Garching– Hotel room: bedroom, bathroom, corridor


• Circadian rhythm (CCT adaptation)

Demonstration - Open officess

ssss

ssss

ssss

ss

ssss

ssss

ssss

ssss

• Room occupancy detection • Automated on/off is default setting to activate ambient light

• Desk presence/activity detection• Automatic task light activation per desk• Create light bubble with neighboring luminaires

• Task light tuning• Use of Desk lights reduce overall power consumption

while keeping minimum required lighting levels.

• Daylight regulation (constant Lux-level)


Demonstration – Corridor

• Background light triggered by any presence sensor– Ends of the corridor brighter– Neighboring rooms trigger background light

• Light bubble (follow me)– Smooth transition to background to make

the bubble invisible

• Part of the corridor is triggered by the entrance presence sensor (never see a dark corridor)

• Circadian rhythm


Energy savings – Corridor

Traditional PIR control : 5.9 kWh/dayEnlight, light bubble : 4.1 kWh/daySavings due to control : 30%

100%71% 71%

47%

20%

presence

0

5

10

15

20

25

30

35

40

45

50

0

50

100

150

200

250

300

350

400

450

0 5 10 15 20 25

Traditional

Enlight

Presence

Energy savings from ‘bubble’


Validation results • 30% energy savings compared to LED state-of-the-art in Office

– Gain from granular control strategies (bubbles, daylight)

• 45% .. 80% energy savings compared to LED retrofit, – Office 1&2: 45% – Hospitality: 80%, more gain in luminaire efficiency, more absence time

• Results exceed the global building energy performance benchmarks (ie. LEED 18 credit pnts, ASHRAE, Title24, …)

• Equal or even increased user comfort compared to baselines. Over 80% of the users prefer Enlight system

� EnLight Energy Saving target (40%) well surpassed


Energy saving results (vs LED SotA )

-34%

-30%-26%

-30%

0

5

10

15

20

25

30

35

40

45

Open Office Corridor Meeting Room Total Building

LED non-retrofit

2012

Enlight 2012

LEN

I K

Wh

/m2

,a

� Overall , Enlight 2012 system is 30% more energy efficient than the baseline LED state-of-the –art system with standard room control


Open Office efficiency breakdown

34 %Combined

34 %Combined

+4 %Desklights

+4 %Desklights-1 %

Luminous

Effiicacy

-1 %Luminous

Effiicacy

-37 %Granular occupancy

and daylight control

-37 %Granular occupancy

and daylight control

-4 %illuminance

correction

-4 %illuminance

correction

+4 %Standby

Power

+4 %Standby

Power


Corridor efficiency breakdown

32 %Combined

32 %Combined

+5 %Standby

Power

+5 %Standby

Power

-21 %Illuminance

correction

-21 %Illuminance

correction

-27 %‚‘Bubble‘control

-27 %‚‘Bubble‘control

+7 %Luminous

efficacy

+7 %Luminous

efficacy

+3 %Wedge

+3 %Wedge

-32%

0,0

2,0

4,0

6,0

8,0

10,0

12,0

Corridor

KW

h/m

2 ,a





• Results exceed the global building energy performance benchmarks (ie. LEED 18 credit pnts, ASHRAE, Title24, …)




22,3

12,4

0

5

10

15

20

25

Office

20%luminaire design

30%intelligent

control

44%

EnLightLE

D R

etr

ofi

t w

. st

an

da

rd c

on

tro

l

En

lig

ht

LEN

I[k

Wh

/m2,a

]

Office energy saving results


0

10

20

30

40

50

60

70

80

90

100

LEN

I [

kW

h/(

a·m

2)]

81 %EnLight

Ret

rofit

w/o

con

trol

EnL

ight

w/o

con

trol

42 %luminaire design

67 %intelligent control

67 %intelligent control

EnL

ight

Hospitality energy saving results





• Results exceed the regional building energy performance benchmarks (ie. LEED 18 credit pnts, ASHRAE, Title24, …)




EN15193 Office**A

shra

e 9

0.1

Ash

rae

90

.1

Ash

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90

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Tit

le 2

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Tit

le 2

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Tit

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LED

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20

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0,0

5,0

10,0

15,0

20,0

25,0

30,0

35,0

40,0

45,0

50,0

Open Office Corridor Meeting room Total Building

EN15193 Office**

Ashrae 90.1

Title 24

LED retrofit 2014

Enlight 2014

LEN

I[K

Wh

/m2

,a]

18

pt

LENI Benchmarks

EnL

ight

2014

�Best-in-class energy efficiency results compared to global building

energy performance benchmarks

EnL

ight

2014

EnL

ight

2014

EnL

ight

2014

18

pt

18

pt

0 p

t

0 p

t 0 p

t





• Results exceed the global building energy performance benchmarks (ie. LEED 18 credit pnts, ASRAE, Title24, …)




User comfort validation results

• The energy saving of the Enlight system does not diminish the (visual) comfort of the office employees during their daily work.

• 80% prefers the energy saving EnLight system over state-of-the-art LED reference system due to energy savings. Good communication and awareness of the benefits are important to introduce new lighting control systems.

• Smooth fading times are essential.Noticeable changes of light are disturbing.

• People like to have control over changes in light. Desk light is well appreciated to have control over the amount of light.


Summary

• EnLight explored a next generation distributed, rule-based lighting control system and a modular Plug-and-Play intra-luminaire bus architecture

• EnLight proved that significant value can be added to the luminaire by distributing the central control function over the individual luminaires

• In pilots, EnLight system with its inherent granular lighting control has demonstrated energy savings from 30% for office applications to 60% for hospitality applications while providing the same or a better level of user comfort as today’s standard LED solutions

• Energy efficiency results exceed the best in class scores of the regional building energy performance benchmarks (i.e. EN15193, ASHRAE,Title24, LEED)


Thank youwww.enlight-project.eu


LED Professional Magazine, Apr 2015

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