This document summarizes a presentation about using variable speed diesel generators for synthetic storage. It discusses how variable speed generators can operate more efficiently than constant speed generators by matching generator output to fluctuating load demands. The presentation includes case studies of hybrid solar-diesel-battery microgrid projects in Malaysia, India, and Western Australia's Eco Resort that demonstrate fuel savings from variable speed control. It also shows typical load profiles and how battery storage can help maximize generator efficiency.

1. Synthetic Storage using
Variable Speed Diesel
Generators
Professor Chem Nayar
Director (Technology & Innovation) , Regen Power Pty Ltd

2. Presentation Overview
Introduction
Constant Speed Vs Variable Speed Diesel Generator
 Case Studies

3. Our main business : Residential,
Commercial and Off-grid Systems

4. 5MW Solar Farm Project in Malaysia

5. 500kW Floating Solar Project
in India

7. Diesel Generator Control

8. Operating Range of a
Diesel Generator

9. Typical load profiles
 Peak demand is
observed around noon
time, due to increasing
air-conditioning,
refrigeration
 Typical Load profile in
Northern Australia
 Peak demand is during the evening -
domestic consumption for lighting ,
TV etc
 At Low Loads loads during the night
time, the diesel consumes about 1.2
litre of diesel to produce one kWh!
During the peak load in the evening
the diesel generator may consume
only 0.3 litre for one kWh.
Typical Load Profiles

10. Typical Battery –Diesel Hybrid system
Design basis to run the DG in
optimum load
Capital and replacement cost
of battery is an issue
 Energy loss in battery

11. Eco Resort Micro Grid installed in 2009

12. Eco Resort Micro Grid

13. Case Study : Eco Wilderness Resort , Broome,
Western Australia
Eco Resort Micro Grid

15. A PV/Wind/Diesel Hybrid energy system for
remote islands in the Republic of Maldives

16. Maldives Remote Island
Electrification Pilot Project
Uligam
Raimandho
o
Kondey

17. Load Characteristics of a typical
Outer Island

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21. Energy Balance in a Micro-grid System

22. Microgrid- Singapore

23. Control Panel

24. Containerised Solar Hybrid Power
System : supplied to Curtin University
Containerised Power Plant, Curtin University

25. 15kW Variable Speed Generator supplied
to Curtin

26. 15kW Variable Speed Generator supplied
to Curtin- Test results

27. Replacement of normal gen-set at
established site
Case study : Powering Mobile Telecommunication Towers

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Fuel Saving with Variable Speed operation

29. PV –Diesel Hybrid Generation System
with battery-based smoothing facility
supported by cloud sensing camera

30. Prof Chem Nayar
Phone: +61 8 9456 3491
c.v.nayar@regenpower.com
www.regenpower.com