استراتژي مديريت انرژي در خودروي هيبريد هيدروليكي موازي

خودروي هيبريد هيدروليكي شاخه مهمي از تكنولوژي هيبريد مي باشد كه داراي مزيت چگالي توان بالا و نرخ شارژ و تخليه مقادير عظيمي از انرژي است. از اين رو اين تكنولوژي براي خودروهاي نيمه سنگين بسيار مناسب است. تقسيم توان ميان دو منبع توليد توان در اين خودرو، نيازمند استراتژي كنترلي خاصي براي بهبود مصرف سوخت و افزايش راندمان مي باشد. استراتژي مديريت انرژي، الگوريتمي است كه توان را ميان موتور احتراقي و موتور هيدروليكي تقسيم مي كند. در اين مقاله از يك كنترل كننده فازي در راستاي تامين اهداف كنترلي استفاده شده است. اين اهداف شامل بهبود شرايط رانندگي و بهبود مصرف سوخت مي باشد كه توسط كنترل كننده فازي مي توان مصالحه اي ميان تمام اجزاي خودرو ايجاد كرد. در اين مقاله ابتدا شرايط كاري خودروي هيبريد هيدروليكي در نظر گرفته شده و سپس با استفاده از يك استراتژي مناسب، عملكرد موتور احتراقي بر اساس تنظيم آن در شرايط بهينه كاركرد، تنظيم مي شود. نتايج شبيه سازي ها نشان مي دهد كه استراتژي مديريت انرژي با استفاده از منطق فازي در خودروي هيبريد هيدروليكي باعث بهبود مصرف سوخت و شرايط كاري خودرو مي شود، بطوريكه 39% افزايش صرفه جويي در سوخت مشاهده مي گردد. Hydraulic hybrid vehicle is an important branch of the hybrid technology. It has many advantages such as high power density, high recharge rates and huge amounts of energy evacuation. These aspects, has made this technology very suitable for semi-heavy vehicles. Power split between the two sources of power in this vehicle requires certain control strategy to improve fuel consumption rates and efficiency. Energy management strategy is an algorithm that divides power between combustion engine and hydraulic motor. In this paper, a fuzzy controller is used in order to meet the control objectives. These objectives include improving driving conditions and fuel consumption. By the use of a fuzzy controller we are able to create a compromise between all components of a vehicle. In this work, first, the operating conditions of a hybrid vehicle were considered and then by utilizing an appropriate strategy, combustion engine performance was set according to its optimal performance conditions. Simulation results showed that using the energy management strategy based on fuzzy logic resulted in improving fuel consumption rates and vehicle operating conditions, such that a 39% saving in fuel consumption were observed.

Hydraulic hybrid vehicle is an important branch of the hybrid technology. It has many advantages such as high power density, high recharge rates and huge amounts of energy evacuation. These aspects, has made this technology very suitable for semi-heavy vehicles. Power split between the two sources of power in this vehicle requires certain control strategy to improve fuel consumption rates and efficiency. Energy management strategy is an algorithm that divides power between combustion engine and hydraulic motor. In this paper, a fuzzy controller is used in order to meet the control objectives. These objectives include improving driving conditions and fuel consumption. By the use of a fuzzy controller we are able to create a compromise between all components of a vehicle. In this work, first, the operating conditions of a hybrid vehicle were considered and then by utilizing an appropriate strategy, combustion engine performance was set according to its optimal performance conditions. Simulation results showed that using the energy management strategy based on fuzzy logic resulted in improving fuel consumption rates and vehicle operating conditions, such that a 39% saving in fuel consumption were observed