Development of control techniques for renewable energy sources, integration with utility grid, and implementation by interfacing with real time digital simulator

风能和太阳能由于其可免费获得、清洁和可再生的特点，被列为最有前途的能源，可以在解决世界能源危机中发挥关键作用。在加拿大，风能以每年约70%的速度爆炸式增长。这一切都是因为环境问题、需求的增加、单个单位规模的扩大、行业的成熟，从而降低了制造成本。因此，开发先进的控制技术，使可再生资源与电网的整合更加可靠、高效，不存在电能质量问题，变得越来越重要。在这项提案中，研究将针对双馈感应发电机(AST-DFIG)转子侧控制的可调速度涡轮机(AST-DFIG)，因为功率变流器只需处理转差功率，转差功率可能达到风力发电机组总量的30%，从而减少了所需其他控制设备的容量。它带来了大量的节省。同样，与光伏(PV)系统相关的核心技术是最大功率点跟踪(MPPT)和逆变器单元，该逆变器单元将太阳能输出转换为与公用电网电气兼容的输出。将努力纳入超级电容器用于储能。将在实时数字仿真器(RTDS)上模拟更真实的电力网络进行测试，该网络与由真实开关设备和控制系统制造的可再生能源接口。因此，进行的测试将更加详尽和可信。这种实验室测试以前从未报道过使用可再生能源。1)构思、分析/评估、制造/测试适用于AST-DFIG转子侧控制的变流器/逆变器拓扑及其控制，以及光伏系统最大功率点跟踪控制和电流整形控制。2)在实时数字仿真器(RTDS)上模拟电力系统网络，将步骤(1)中开发的可再生能源系统与RTDS对接，并进行性能评估。

Wind and solar energies, due to their free availability and clean and renewable character, ranks as the most promising energy resource that could play a key role in solving the world energy crisis. Wind energy growth is exploding at about 70% per year in Canada. This is all because of environmental concerns, increased demand, increased scale of individual unit, maturation of the industry, and hence the reduced cost of manufacturing. Therefore, it is becoming more and more important to develop advanced control techniques so that the integration of renewable resources with the grid is more reliable and efficient and free from power quality problems. In this proposal, research will be directed towards adjustable speed turbines (AST) with doubly fed induction generator (AST-DFIG) with rotor side control because the power converters only need to handle slip power, which may be to the order of 30% of total wind turbine hence reducing the required capacity of other control equipment needed. It results in large savings. Similarly, the core technology associated with photovoltaic (PV) systems is maximum power point tracking (MPPT) and an inverter unit that converts the solar output electrically compatible with the utility grid. Efforts will be made to incorporate ultra capacitor for energy storage. Testing will be done with more realistic power network simulated on real time digital simulator (RTDS) interfaced with the renewable energy sources fabricated with real switching devices and control systems. Therefore, the testing performed will be more exhaustive and credible. This kind of laboratory testing has never been reported before with renewable sources. Brief objectives: 1) Conceive, analyze/evaluate, fabricate/test proper converter/inverter topology and its control for rotor side control of AST-DFIG and control for MPPT and current shaping for PV system. 2) Simulate a power system network on real time digital simulator (RTDS), interface the renewable energy source systems developed in step (1)  with RTDS and do performance evaluation.