With the nonlinear and time variable characteristics of hydraulic turbine regulation system, high qualified speed adjustment system cannot be achieved with the conventional PID controller.
水轮机调节系统具有非线性和时变性的特性，传统的PID控制器无法获得高性能的调速系统。
The results also show that the performance of variable working condition of hybrid system can be improved by changing the rotational speed of gas turbine.
研究结果还表明，由于供给燃料发生变化而引起的燃气轮机转速的改变，有利于改善混合动力系统的变工况性能。
Variable nozzle turbocharger (VNT) can improve the low-speed performance and emission of turbocharged diesel engine. Turbine experiment of JK90S turbocharger with rotating vanes was undertaken.
将所设计的JK90S转叶式可变喷嘴涡轮增压器进行了涡轮性能试验。
Variable speed wind turbine is one of hot research fields in large wind turbines these days.
变转速风力机是当前大型风力机研究领域的研究热点之一。
The torque control, pitch control and general wind turbine coordinate control strategy of variable speed adjustable pitch wind turbine were researched.
针对变速变距机组的转矩控制、桨距控制以及整机的协调控制进行了研究。
An adaptive feedback linearization controller for a variable speed wind turbine system is proposed.
针对变速风力发电系统提出了一种自适应反馈线性化控制器。
This paper introduces the control method for the Wind Turbine Units of constant speed constant frequency and variable speed constant frequency.
文章介绍了恒速恒频及变速恒频并网型风力发电机组的控制方法。
MW variable speed constant frequency wind turbine from shenyang university of technology is a variable pitch wind turbine, it can change pitch to adjust power above rated wind speed.
由沈阳工业大学研制的MW级变速恒频风电机组属于变桨距型机组，它在额定风速以上进行变桨距调功控制。
Finally this article analyzed the mathematical model of wind turbine, compared to the current different types of variable speed constant frequency wind power systems.
最后分析了风力机的数学模型，对比了目前采用的不同类型的变速恒频风力发电系统。
Variable geometry turbine (VNT) can improve the low-speed performance and emission of turbocharged diesel engine.
可变喷嘴涡轮调节技术是改善增压柴油机低速性能、降低柴油机排放的有效措施。
The simulation results indicate that wind turbine is operated at maximum power coefficient with variable-speed mode and the output power of generator is kept around rated power with pitch control.
数字仿真表明，在风速低于额定风速时变速运行捕获能量比恒速运行捕获能量大；节距调节控制可以很好地使输出功率稳定在额定功率左右。
A simplified model of variable speed variable pitch wind turbine is established.
建立了变速变桨距风力发电机组的简化模型。
A simplified model of variable speed variable pitch wind turbine is established.
建立了变速变桨距风力发电机组的简化模型。
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