Integrated Energy and Thermal Management for Electrified Powertrains

Wei, Caiyang; Hofman, Théo; Caarls, Esin Ilhan; Iperen, Rokus van

doi:10.3390/en12112058

Cited by 9 publications

(5 citation statements)

References 52 publications

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“…A typical ICE produces enough excess mechanical power to drive water pump, compressor and other heat dissipating components to control the temperature of engine and cabin. Different from ICEVs, batteries are the main power source of EVs; therefore, the thermal management of batteries is more important in EVs [11,12]. Moreover, although the electric power components can achieve higher power efficiency with relatively lower heat generating rate, the high temperature sensitivity and low operating Fig.…”

Section: Thermal Management In Electrified Powertrainmentioning

confidence: 99%

Thermal Management of Electrified Propulsion System for Low-Carbon Vehicles

Huang

Wang

et al. 2020

Automot. Innov.

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An overview of current thermal challenges in transport electrification is introduced in order to underpin the research developments and trends of recent thermal management techniques. Currently, explorations of intelligent thermal management and control strategies prevail among car manufacturers in the context of climate change and global warming impacts. Therefore, major cutting-edge systematic approaches in electrified powertrain are summarized in the first place. In particular, the important role of heating, ventilation and air-condition system (HVAC) is emphasised. The trends in developing efficient HVAC system for future electrified powertrain are analysed. Then electric machine efficiency is under spotlight which could be improved by introducing new thermal management techniques and strengthening the efforts of driveline integrations. The demanded integration efforts are expected to provide better value per volume, or more power output/torque per unit with smaller form factor. Driven by demands, major thermal issues of high-power density machines are raised including the comprehensive understanding of thermal path, and multiphysics challenges are addressed whilst embedding power electronic semiconductors, non-isotropic electromagnetic materials and thermal insulation materials. Last but not least, the present review has listed several typical cooling techniques such as liquid cooling jacket, impingement/spray cooling and immersion cooling that could be applied to facilitate the development of integrated electric machine, and a mechanic-electric-thermal holistic approach is suggested at early design phase. Conclusively, a brief summary of the emerging new cooling techniques is presented and the keys to a successful integration are concluded.

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Section: Thermal Management In Electrified Powertrainmentioning

confidence: 99%

Thermal Management of Electrified Propulsion System for Low-Carbon Vehicles

Huang

Wang

et al. 2020

Automot. Innov.

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“…The thermal domain, however, for instance, evaluation of cooling power consumption and temperature profile, has yet to be explored. It is also an integral part of an EV, which would affect the total energy consumption [18].…”

Section: Introductionmentioning

confidence: 99%

Co-Design of CVT-Based Electric Vehicles

2021

Self Cite

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For an electric vehicle (EV) with a continuously variable transmission (CVT), a novel convex programming (CP)-based co-design method is proposed to minimize the total-cost-of-ownership (TCO). The integration of the electric machine (EM) and the CVT is the primary focus. The optimized system with co-design reduces the TCO by around 5.9% compared to a non-optimized CVT-based EV (based on off-the-shelf components) and by around 2% compared to the EV equipped with a single-speed transmission (SST). By taking advantage of the control and design freedom provided by the CVT, the optimal CVT, EM and battery sizes are found to reduce the system cost. It simultaneously finds the optimal CVT speed ratio and air-flow rate of the cooling system reducing the energy consumption. The strength of co-design is highlighted by comparing to a sequential design, and insights into the design of a low-power EV that is energy-efficient and cost-effective for urban driving are provided. A highly integrated EM-CVT system, which is efficient, low-cost and lightweight, can be expected for future EV applications.

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“…Gong et al 21 proposed an integrated power and thermal management scheme for HEV, and DP algorithm is used to derive a benchmark. Wei et al 22 employed waste heat recovery technologies to further improve fuel economy, and the impact of cold-start conditions on the fuel-saving potential is demonstrated through simulation. A hierarchical two-layer MPC is used to derive the integrated power and thermal management strategy for connected and automated HEVs considering fast and slow dynamics associated with power and thermal systems.…”

Section: Introductionmentioning

confidence: 99%

Modeling of engine thermal dynamics and its application in energy management of HEVs considering engine warming-up

Chu

Shi

Jiang

et al. 2021

International Journal of Engine Research

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The process of engine warming-up leads to additional fuel consumption. Energy management strategy considering engine warming-up is expected to further improve the energy economy of hybrid electric vehicles. This study provides a simple yet practical model for engine thermal dynamics. Then, the optimization problem of energy management considering engine warming-up is formulated on the basis of the control-oriented engine thermal dynamics. Thereafter, the optimal solution is derived by using the dynamic programming algorithm. Finally, the proposed engine thermal dynamics and energy management strategy are evaluated through simulation and experiments. Results show that the established engine thermal model effectively captures the main thermal behavior, simulation results reveal a high degree of approximation to experimental results for the engine temperature and fuel consumption, and the energy management strategy with engine temperature can further improve the energy efficiency.

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Integrated Energy and Thermal Management for Electrified Powertrains

Cited by 9 publications

References 52 publications

Thermal Management of Electrified Propulsion System for Low-Carbon Vehicles

Thermal Management of Electrified Propulsion System for Low-Carbon Vehicles

Co-Design of CVT-Based Electric Vehicles

Modeling of engine thermal dynamics and its application in energy management of HEVs considering engine warming-up

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