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Energy Management of a Hybrid-Power Gas Engine-Driven Heat Pump

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Název: Energy Management of a Hybrid-Power Gas Engine-Driven Heat Pump
Autoři: Meng, Qingkun, Cai, Liang, Ji, Wenxiu, Yan, Jie, Zhang, Tao, Zhang, Xiaosong
Zdroj: Energies, Vol 8, Iss 10, Pp 11254-11275 (2015)
Energies
Volume 8
Issue 10
Pages 11254-11275
Informace o vydavateli: MDPI AG, 2015.
Rok vydání: 2015
Témata: Technology, energy management, HPGHP, torque limits, 0202 electrical engineering, electronic engineering, information engineering, SOC, 02 engineering and technology, 7. Clean energy, comprehensive efficiency
Popis: The hybrid-power gas engine-driven heat pump (HPGHP) combines hybrid power technology with a gas engine heat pump. The engine in the power system is capable of operating constantly with high thermal efficiency and low emissions during different operating modes. In this paper, the mathematical models of various components is established, including the engine thermal efficiency map and the motor efficiency map. The comprehensive charging/discharging efficiency model and energy management optimization strategy model which is proposed to maximize the efficiency of instantaneous HPGHP system are established. Then, different charging/discharging torque limits are obtained. Finally, a novel gas engine economical zone control strategy which combined with the SOC of battery in real time is put forward. The main operating parameters of HPGHP system under energy management are simulated by Matlab/Simulink and validated by experimental data, such as engine and motor operating torque, fuel consumption rate and comprehensive efficiency, etc. The results show that during 3600 s’ run-time, the SOC value of battery packs varies between 0.58 and 0.705, the fuel consumption rate reaches minimum values of approximately 291.3 g/(kW h) when the compressor speed is nearly 1550 rpm in mode D, the engine thermal efficiency and comprehensive efficiency reach maximum values of approximately 0.2727 and 0.2648 when the compressor speed is 1575 rpm and 1475 rpm, respectively, in mode D. In general, the motor efficiency can be maintained above 0.85 in either mode.
Druh dokumentu: Article
Other literature type
Popis souboru: application/pdf
Jazyk: English
ISSN: 1996-1073
DOI: 10.3390/en81011254
Přístupová URL adresa: https://www.mdpi.com/1996-1073/8/10/11254/pdf
https://doaj.org/article/64d43f2da64942e2ab9491cf34259d8f
https://www.mdpi.com/1996-1073/8/10/11254
https://EconPapers.repec.org/RePEc:gam:jeners:v:8:y:2015:i:10:p:11254-11275:d:57000
https://core.ac.uk/display/90263104
https://www.mdpi.com/1996-1073/8/10/11254/pdf
https://ideas.repec.org/a/gam/jeners/v8y2015i10p11254-11275d57000.html
Rights: CC BY
Přístupové číslo: edsair.doi.dedup.....5bc82c76bed6d6925bf7def400f44c37
Databáze: OpenAIRE
Popis
Abstrakt:The hybrid-power gas engine-driven heat pump (HPGHP) combines hybrid power technology with a gas engine heat pump. The engine in the power system is capable of operating constantly with high thermal efficiency and low emissions during different operating modes. In this paper, the mathematical models of various components is established, including the engine thermal efficiency map and the motor efficiency map. The comprehensive charging/discharging efficiency model and energy management optimization strategy model which is proposed to maximize the efficiency of instantaneous HPGHP system are established. Then, different charging/discharging torque limits are obtained. Finally, a novel gas engine economical zone control strategy which combined with the SOC of battery in real time is put forward. The main operating parameters of HPGHP system under energy management are simulated by Matlab/Simulink and validated by experimental data, such as engine and motor operating torque, fuel consumption rate and comprehensive efficiency, etc. The results show that during 3600 s’ run-time, the SOC value of battery packs varies between 0.58 and 0.705, the fuel consumption rate reaches minimum values of approximately 291.3 g/(kW h) when the compressor speed is nearly 1550 rpm in mode D, the engine thermal efficiency and comprehensive efficiency reach maximum values of approximately 0.2727 and 0.2648 when the compressor speed is 1575 rpm and 1475 rpm, respectively, in mode D. In general, the motor efficiency can be maintained above 0.85 in either mode.
ISSN:19961073
DOI:10.3390/en81011254