混合动力汽车A-ECMS与不同模式选择技术集成实例研究

Shanu Pataparambath Noyalraj, Avinash Gadila, S. Senthilkumar
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摘要

汽车电气化是原始设备制造商(OEM)在2020/21年实现95克二氧化碳/公里目标的设想战略之一。电动汽车引发了市场和消费者的兴趣激增。然而,他们也面临着一系列的挑战,从基础设施、高压元件成熟度、行驶里程和安全法规开始。所有这些整合所需的时间比预期的要长,燃料电池汽车将成为下一个大趋势,尤其是在CV领域。因此,48V技术混合动力汽车被视为完全电气化的先驱。在燃油效率和与成本和上市时间相关的高压混合动力车方面,它已经超过了传统汽车。混合动力汽车软件提供商面临着许多挑战,包括选择发动机和电机之间的扭矩分配控制策略,以及决定从混合动力模式切换到电动模式还是从电动模式切换。燃油经济性和驾驶性能将直接受到这两个领域的影响。本工作在MIDC一期(城市)运行的P3混合动力汽车上提出并测试了多种技术,系统约束条件包括48V电池SOC,维持12V电池等。开发的新策略基于两种方法的集成:1)用于电机和发动机之间扭矩分配的离散A-ECMS与新型优先滤波器,以稳定齿轮选择并防止齿轮振荡;2)基于不同规则的模式决策。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Case Study on Integration of A-ECMS with Different Mode Selection Techniques for Hybrid Vehicles
Electrification of automobiles is one of the envisioned strategies by the original equipment manufacturers (OEM) to attain the 95g CO2/km target in 2020/21. Electric vehicles have sparked a surge of interest among markets and consumers. Nonetheless, they face their own set of challenges, beginning with infrastructure, high-voltage component maturity, driving range, and safety regulations. All of this will take longer to integrate than expected, with fuel cell vehicles being the next big thing, especially in the CV sector. Hence, 48V technology hybrid vehicles are regarded as the forerunners of complete electrification. It already outperforms traditional vehicles in fuel efficiency and high voltage hybrids relating to cost and time to market. Automobile software providers for hybrid vehicles confront many challenges, including choosing a control strategy for torque distribution between the engine and the motor and deciding mode shift whether to go from hybrid to electric mode or vice versa. Fuel economy and drivability will be directly affected by both of these domains. This work proposes and tests multiple techniques in a P3 hybrid vehicle operated in the MIDC 1ST phase (urban) under system constraints such as 48V battery SOC, sustaining 12V battery, and so on. The developed novel strategies are based on integrating two approaches I) Discrete A-ECMS for torque split between motor and engine with novel priority filters to stabilize the gear selections and prevent gear oscillations II) Mode decision based on different rules.
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