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Research on hybrid modeling and predictive energy management for power split hybrid electric vehicle

Wang Shaohua, Zhang Sheng, Shi Dehua, Sun Xiaoqiang, Yang Tao

Bulletin of the Polish Academy of Sciences. Technical Sciences

2021

Vol. 69, nr 3

art. no. e137064

Due to the coexistence of continuity and discreteness, energy management of a multi-mode power split hybrid electric vehicle (HEV) can be considered a typical hybrid system. Therefore, the hybrid system theory is applied to investigate the optimum energy distribution strategy of a power split multi-mode HEV. In order to obtain a unified description of the continuous/discrete dynamics, including both the steady power distribution process and mode switching behaviors, mixed logical dynamical (MLD) modeling is adopted to build the control-oriented model. Moreover, linear piecewise affine (PWA) technology is applied to deal with nonlinear characteristics in MLD modeling. The MLD model is finally obtained through a high level modeling language, i.e. HYSDEL. Based on the MLD model, hybrid model predictive control (HMPC) strategy is proposed, where a mixed integer quadratic programming (MIQP) problem is constructed for optimum power distribution. Simulation studies under different driving cycles demonstrate that the proposed control strategy can have a superior control effect as compared with the rule-based control strategy.

Podział mocy w procesie jednoczesnego topienia i przetrzymywania wsadu

Claisse C., Wątróbski K.

Krzepnięcie Metali i Stopów

2000

R. 2, nr 44

389--404

Na świecie znajduje się w eksploatacji wiele instalacji do indukcyjnego topienia i przetrzymywania metalu. Podział czasu (Timeshare) i podział mocy (Powershare) obie koncepcje zostały wdrożone w latach dziewięćdziesiątych. Posiadają one określone zalety szczególnie gdy wymagana jest elastyczność przy ciągłym lub półciągłym zaopatrywaniu w ciekły metal. Bardzo ważnym jest żeby urządzenia do topienia indukcyjnego były dokładnie dobrane pod względem zapotrzebowania odlewni na metal. Dlatego też zrozumienie zasad działania różnych systemów topienia jest ważne. [...]

There are a number of operational approaches to batch induction melting (and holding). Timeshare and Powershare are both concepts that have been introduced during the 1990’s. These do offer certain advantages particularly where flexibility or a continuous or semi-continuous supply of molten metal is needed. It is very important that induction-melting equipment is properly matched to the metal requirements of the foundry. An understanding of the characteristics of different melting systems is therefore very important. The purpose of this presentation is first to review earlier operational approaches, highlighting their principal characteristics and to then review the Timeshare and Powershare types of induction furnaces systems. With Timeshare a single induction power source is used to deliver power on a time cycle basis to two or more furnaces. Control is achieved using a PLC System. This system is considered as an improvement on the Butterfly Melter. It reduces operator intervention, assisting with accurate temperature control. With Powershare a single induction power source is used to deliver power simultaneously to a number of furnaces. This is an extremely flexible melting (and holding) system.