Temperature-dependant voltage regulator operation for optimal load acceptance of a diesel generator

Temperature-dependant voltage regulator operation for optimal load acceptance of a diesel generator

For access to this article, please select a purchase option:

Buy article PDF
(plus tax if applicable)
Buy Knowledge Pack
10 articles for $120.00
(plus taxes if applicable)

IET members benefit from discounts to all IET publications and free access to E&T Magazine. If you are an IET member, log in to your account and the discounts will automatically be applied.

Learn more about IET membership 

Recommend Title Publication to library

You must fill out fields marked with: *

Librarian details
Your details
Why are you recommending this title?
Select reason:
IET Electric Power Applications — Recommend this title to your library

Thank you

Your recommendation has been sent to your librarian.

Standby diesel generator sets (gen-sets) are used worldwide to provide a backup electricity supply should the mains supply to a site be lost. The diesel engine can start rapidly and the gen-set can begin supplying power within 20–60 s. Traditional commissioning of a gen-set is performed when the engine is at its normal ‘hot’ operating temperature. Unless a jacket water heater is used, once the gen-set is shutdown the engine will cool to the ambient temperature, and following start-up the load acceptance performance will be lower than when it was in a hot operating condition. A novel voltage regulator design which utilises engine temperature as a supplementary control input is presented, providing an improvement in a gen-set's cold load acceptance performance without compromising its standard hot performance. The new voltage regulator design is tested on a commercial diesel gen-set to demonstrate the optimised load acceptance performance.


    1. 1)
    2. 2)
      • Joos, G., Ooi, B.T., Mcgills, D., Galiana, F.D., Marceau, R.: `The potential of distributed generation to provide ancillary services', IEEE Power Engineering Society Summer Meeting, 2000, 3, p. 1762–1767.
    3. 3)
      • Willsteed, C.J.: `Standby diesel power generation and associated control equipment', INTELEC Third Int. Telecommunications Energy Conf., 1981, p. 275–281.
    4. 4)
    5. 5)
      • International Standards Organization: ‘ISO 8528-5, reciprocating internal combustion engine driven alternating current generating sets – part 5: specification for generating sets’. 2005.
    6. 6)
      • NFPA110: ‘Standard for standby and emergency power systems’. 2005.
    7. 7)
      • NFPA110. ‘Standard for standby and emergency power systems’. 2010.
    8. 8)
      • Herzog, J.W.: `Current and near-term emission control strategies for diesel powered generator sets', INTELEC 24th Annual Int. Telecommunications Energy Conf., 2002, p. 394–399.
    9. 9)
      • Caterpillar: ‘Specifications systems operation testing and adjusting caterpillar digital voltage regulator (CDVR)’, Publication No. RENR7941–01. Available at, accessed 19 July 2011.
    10. 10)
      • Basler Electric: ‘Instruction manual for digital excitation control system DECS-200’, Publication No. 9360100990, Revision: J. Available at, accessed 19 July 2011.
    11. 11)
      • Chambers, K.D.R., McGowan, D.J., Morrow, D.J.: `A digital load relief scheme for a diesel generating set', IEEE Power Engineering Society General Meeting, 2007, p. 1–7.
    12. 12)
      • Somer L.: ‘R448 Installation and maintenance guide’, Publication No. 3972 en. Available at, accessed 19 July 2011.
    13. 13)
      • Basler Electric: ‘AEC63–7 Voltage Regulator Datasheet’, Publication No. 9273300990-H. 2011. Available at, accessed 19 July 2011.
    14. 14)
      • Stamford: ‘SX440 Automatic Voltage Regulator (AVR), Specification, Installation and Adjustments.’ Available at, accessed 19 July 2011.
    15. 15)
      • C.D. Rakopoulos , E.G. Giakoumis . (2009) Combustion instability, Diesel engine transient operation principles of operation and simulation analysis London.
    16. 16)
      • H. Bauer . (2004) Cold-start compensation, Diesel-engine management.
    17. 17)
      • IEEE Std 421.5–2005: ‘IEEE recommended practice for excitation system models for power system stability studies’, 2005.
    18. 18)
      • The MathWorks: xPC Target 3.3. Available at, accessed 19 July 2011.
    19. 19)
      • The MathWorks: MATLAB 7.5. Available at, accessed 19 July 2011.
    20. 20)
      • The MathWorks: Simulink. version 7.0 Available at, accessed 19 July 2011.
    21. 21)
      • SAE Technical Standards: ‘J1939–71 Vehicle Application Layer’. 2006.

Related content

This is a required field
Please enter a valid email address