Zero Emission Long Haul Sustainable Commercial Vehicle Propulsion (ZELUS) - SBRI phase 1

**市场需求：**用于区域/城市物流的柴油中型卡车造成建成区及其周围45%的空气污染，造成毁灭性的社会、环境和相应的经济影响。英国的目标是到2050年实现零排放车队，但许多城市的目标是通过零/低排放区更快地全面禁止柴油，从根本上危及区域/城市物流的运力、可靠性和成本。电气化推进仍然是最可信的方法，虽然更广泛的演变将伴随着技术驱动/有机成本的降低而逐步进行，但对于用于商品化大规模生产的成本效益高的商用车电气化动力总成的迫切需求仍未得到满足。目标是在第二阶段结束时展示一款长途零排放可持续卡车。从系统(卡车)的角度，考虑了两种主要的能量存储--电池和燃料电池。将提供详细的系统级别和组件级别的比较，以做出基于量化的决策。**创新解决方案：**在第一阶段，重点是电气化动力传动系统可行性研究，主要目标如下：1.分析性能(如重量、效率等)的变化。关于驾驶的速度。在客运市场上，电气化推进有多种解决方案。这些解决方案涉及的速度范围很广。经历与乘用车相同的迭代将导致电动HGV解决方案的延迟和昂贵的市场进入。确定驱动速度的最佳位置将为HGV的电气化推进带来一个坚固、轻便/紧凑和具有成本竞争力的解决方案。2.目标1中开发的快速估算模型将能够确定不同系统架构的定量比较矩阵。具体来说，将比较四种体系结构--a.集中式，每辆车一种驱动；b.分布式，每轴一种驱动；c.分布式，每轮一种驱动；以及d.分布式，每轮一种以上的驱动。这将为第二阶段提供一个明确的方向。3.各种PE变流器和E-Machine拓扑可供选择，以满足宽速度范围的要求。减少的粉末冶金解决方案、干式机器内件、逆变电机、混合转换器、GaN/SIC等都是潜在的解决方案，将使其达到更高的水平。快速调整模型将允许分析机器和PE转换器的这些拓扑，以获得最高功率密度。所有这些目标都是为了增加系统的功率密度并使其轻量化/紧凑化。目的是使其重量轻，从而产生具有成本竞争力的最终解决方案。

**Market need:** Diesel-fuelled medium-duty trucks used for regional/urban logistics cause 45% of air-pollution in and around built up areas, with devastating social, environmental and corresponding economic impacts. The UK targets a zero-emission vehicle fleet by 2050, but many cities target blanket diesel-bans far sooner via zero/low emission zones, fundamentally risking the capacity, reliability and cost of regional/urban logistics. Electrified propulsion remains the most credible approach, and whilst the broader evolution will occur incrementally alongside technology driven / organic cost reductions, the immediate need for a cost-effective commercial vehicle electrified powertrain for commoditised mass-production remains unmet. Aim is to demonstrate a long haul zero emission sustainable truck at the end of Phase 2\. From the system (truck) perspective, two prime energy storage are considered -- battery and fuel cell. A detailed system level and component level comparison would be presented to make a quantitative based decision. **Innovative solution:** During the Phase 1, the focus is on the electrified drivetrain feasibility study with three prime objectives is performed as, 1. To analyse the variation of performance (i.e. weight, efficiency, etc.) with respect to the speed of drive. There are various solutions for electrified propulsion in the market for passenger. These solutions are spread over a wide range of speed. Going through the same iterations as that of passenger car would result into delayed and expensive market entry for electrified HGV solution. Determining the sweet spot for the drive speed would result in to a robust, light weight/compact and cost competitive solution for electrified propulsion of HGV's. 2. The fast sizing models developed in objective 1, would enable determining the quantitative comparison matrix for different system architectures. Specifically, four architectures would be compared -- a. Centralised, one drive per vehicle, b. Distributed, one drive per axel, c. Distributed, one drive per wheel, and d. Distributed, more than one drive per wheel. This would provide a clear direction for Phase 2\. 3. Various PE converter and E-machine topologies are available to satisfy wide speed range requirement. Reduced PM solution, dry machine internals, inverted motor, hybrid converter, GaN/SiC, etc. are potential solutions that would empower reaching newer heights. The fast sizing model would allow to analyse these topologies for machine and PE converter for highest power density. All these objectives are working towards increasing the system power density and making it light weight/compact. Aim is to make it light weight that would result in cost-competitive final solution.