Technology - Regulations Nexus for Higher Efficiency Transformers

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Alexander Garrett
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1 Technology - Regulations Nexus for Higher Efficiency Transformers International Energy Efficient Transformers Workshop 2013 By Mayur Karmarkar 13 th Nov 2013

2 Distribution Transformer Energy Efficiency Regulations in Different Economies Economy Regulation Type Mandatory / Voluntary Definition of performance Australia MEPS Mandatory 50% Brazil Endorsement Label / MEPS* Canada China MEPS / Endorsement Label MEPS / Comparative label Voluntary/ Mandatory* Mandatory / Voluntary Mandatory / Mandatory 50% 50% & No Loss Chinese Taipei Endorsement Label Voluntary 50% Egypt MEPS Mandatory 50% * Programs announced, enforcement will begin in near future 1

3 Distribution Transformer Energy Efficiency Regulations in Different Economies 1 Economy Regulation Type Mandatory / Voluntary Definition of performance EU MEPS (Ecodesign)* Mandatory* & No Loss India MEPS / Comparative Label Mandatory 50% & 100% Israel Comparative label Voluntary 50% Japan Korea MEPS (Top Runner Program) MEPS / Endorsement Label Mexico MEPS* / Endorsement Label Mandatory 40% OR 50% Mandatory / Voluntary Mandatory*/ Voluntary 50% 50% New Zealand MEPS Mandatory 50% Peru MEPS* Mandatory* & No Loss USA MEPS Mandatory 50% Vietnam MEPS* Mandatory* 50%

4 Presentation title and date Definition of Performance IEC Power trasformers ANSI C IN RATED POWER PRIMARY OUT OUT losses IN losses IN OUT RATED POWER SECONDARY Losses = No Loss + ( Loss X Factor 2 ) 3

5 Technology Options To decrease No Losses Use lower loss core material Decrease design flux density New core construction To reduce load losses Use Lower loss conductor material Decrease design current density New winding construction 4

6 Total Loss (Watts) Presentation title and date Design Options for Efficiency Performance At 50% Watt losses of diverse 25 kva, 1 ph, liquid filled, DT designs, all complying with MEPS at the reference load ( 50%) Design C 108 W Design B, Optimal Design 250 Design A W Design A : NLL = 96 W, LL = 144 W Design B : NLL = 66 W, LL = 264 W Design C : NLL = 30 W, LL = 408 W Percentage 5

7 Presentation title and date Curves 1 Daily Curve for a Typical DT 0.8 Ideal Case Worst Case 0.2 Realistic Case 0 00:00:00 04:00:00 08:00:00 12:00:00 16:00:00 20:00:00 00:00:00 6

8 Daily Energy Loss in kwh Presentation title and date Daily Energy Loss : Curves & Design Options Daily Energy Loss of Diverse 25 kva, 1 ph DT Designs complying to MEPS at 50% Curve 1 (Best Case) Curve 2 (Worst Case) Curve 3 (Realistic Case) Design A (NLL = 96 W, LL-144 W) Design B (NLL = 66 W, LL = 264W) Design C (NLL = 30W, LL= 408W)

9 Presentation title and date EE DT Performance Definition & Future Distribution Network Is the Factor stable? Design life of a distribution transformer > 20 Years Utility capex Vs opex factor & utility DSM Role of small distribution system EV Charging & load factor IT enables distribution system Is the definition of EEDT performance future-proof? 8

10 Technology Regulation Nexus Performance Definition efficiency at 50% load Provides maximum technological / design flexibility Enables cost optimized designs Optimal losses in idealized daily load conditions Optimal in unvarying networks Performance definition and No-load losses Restricts technological / design flexibility Designs are prescriptive, reduces optimization options Optimal losses in practical daily load conditions More suitable for changing networks 9

11 Thank you For more information, please contact: Mayur Karmarkar, 11

IECEE. Taking Conformity Assessment Further

IECEE. Taking Conformity Assessment Further Global Motor Energy Efficiency GMEE Dan Delaney Regal Beloit GMEE Convenor - IECEE PSC WG5/6 Chairman NEMA 1MG Section Committee Motor Summit Zurich, 11 October 2016 The Association of Electrical and Medical