The development of a smart, rugged, ultraefficient grid tied interface for small wind turbines

为小型风力涡轮机开发智能、坚固、超高效的并网接口

• 批准号: 710624
• 金额: $ 12.66万
• 依托单位: FUTURENERGY LTD
• 依托单位国家: 英国
• 项目类别: GRD Proof of Concept
• 财政年份: 2014
• 资助国家: 英国
• 起止时间: 2014 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=710624
• 关键词: development; smart; rugged; ultraefficient; grid

The UK’s climate change target is to reduce greenhouse gas emissions by 34% in 2020 and80% in 2050 [DTI white paper]. Small wind turbines (SWTs) – rated up to 100kW – could bepotentially make a significant contribution towards reducing GHG emissions. TheGovernment has introduced a range of incentives to encourage the uptake of SWTtechnologies, incl. Feed-in-Tariffs (FiT), the Green Deal and removal of the need for planningpermissions in some cases. Despite the recent increases in market uptake of SWTs, thereremains a number of challenges that restrict both the maximisation of their power output andwider adoption of this promising renewable energy solution.SWTs typically employ fixed-pitch blades, which facilitate simple structure, low cost, andhigh reliability. However, due to the fixed nature of the blades, SWTs have a tendency to overspeed,causing over-loading problems at excessive wind velocities. Overloading of expensiveelectrical components is undesirable and often causes irreparable costly damage. An auto-stopfeature to prevent such incidences has not become commonplace due to cost and poweringsupply limitations.The nature of wind and its inherent fluctuations, mean grid connection inverters - whichconvert DC current to grid compliant AC - must be oversized to deal with any excessive wind.Oversizing is a crude way to deal with the issue, but this approach has become commonplacesince incumbent wind inverters are based on technology originally developed for generationof stable solar energy. The result of over specified inverters is highly inefficient (30-40%)power transfer at average site wind speed.FuturEnergy has developed an innovative system concept to overcome these problems. Ifsuccessful, we will capture roughly 10% of our markets and generate a cumulative revenuetotal of £13.7million. This revenue will result in a cumulative profit of £5.14million. With aninitial investment of £800,000, we estimate an attractive RoI of >600%.

英国的气候变化目标是在2020年减少34%的温室气体排放，在2050年减少80%[DTI白色文件]。小型风力涡轮机（SWT）-额定功率高达100千瓦-可能对减少温室气体排放做出重大贡献。政府已推出了一系列激励措施，以鼓励采用SWT技术，包括：上网电价（FiT）、绿色交易以及在某些情况下取消规划许可的必要性。尽管近年来SWT的市场占有率有所增加，但仍然存在许多挑战，限制了其功率输出的最大化和这种有前途的可再生能源解决方案的更广泛采用。SWT通常采用固定螺距叶片，这有利于结构简单，成本低，可靠性高。然而，由于叶片的固定性质，SWT具有弯曲的倾向，从而在过大的风速下导致过载问题。昂贵的电子元件的过载是不希望的，并且经常导致不可修复的昂贵的损坏。由于成本和电力供应的限制，防止此类事件发生的自动停止功能尚未普及。风的性质及其固有的波动，意味着并网逆变器-将直流电流转换为电网兼容的交流-必须超大以处理任何过量的风。关闭是处理这个问题的一种粗略方法，但是这种方法已经变得普遍，因为现有的风力逆变器是基于最初为产生稳定的太阳能而开发的技术。超过额定值的逆变器导致在平均现场风速下的功率传输效率极低（30-40%）。FuturEnergy开发了一种创新的系统概念来克服这些问题。如果成功的话，我们将占据大约10%的市场，并产生1370万英镑的累计收入。这一收入将带来514万英镑的累计利润。初始投资为80万英镑，我们估计投资回报率超过600%。