And this method is applied to the 1150t / h boiler of 1 unit in fuzhou power plant of huaneng inc by simulating . the off - line simulation indicates that this method can follow on the characteristic of boiler combustion to find out the optimal point - wise of working 并以华能福州电厂1 #机组1150t h锅炉为对象，建立锅炉燃烧系统的稳态模型，在此模型的基础上通过sqp优化算法，求取最佳工况下的各过程变量的参考值，提供给下级dcs子系统，从而指导锅炉的燃烧控制。
By selecting the amplitude and phase angle of the vsc output voltage as control variables , the steady - state model of hvdc - vsc is developed . according to this model , the corresponding relationship between the two controlling and the two controlled variables of the vsc is determined . furthermore , a nonlinear control strategy combining an inverse model controller with a pi controller is proposed 建立了以电压相角和幅值为控制量的hvdc - vsc的稳态模型，并依据所建立的稳态模型，确定了vsc两个控制量与两个被控量之间的合理对应关系，设计了由逆模型控制器和pi控制器构成的非线性控制器。
The simulation results of a hvdc light system based on vsvpwm and pid controller verify the feasibility of vsvpwm and pid controller to hvdc light systems . the power flow model of hvdc light system is also proposed , and a power flow calculation program incorporating with hvdc light is developed , based on psasp / upi . the epri 7 - bus test system is applied to test the proposed model and algorithm , and the results prove it feasible and correctness 本文分析了用于vsc控制的电压空间矢量脉宽调制（ vsvpwm ）的基本原理，提出了基于pscad / emtdc软件的vsvpwm仿真方法；建立了hvdclight系统的稳态模型，并结合该模型确定了控制量与被控量的合理对应关系，设计了适用于hvdclight系统的pid控制器；通过对采用vsvpwm和pid控制器的hvdclight系统的数字仿真研究，验证了vsvpwm和pid控制器应用于hvdclight系统的可行性；建立了hvdclight系统潮流计算的数学模型，利用psasp软件及其用户程序接口功能开发了含hvdclight的电力系统潮流计算程序，并结合epri7节点测试系统的算例分析，证明了该模型及其实现方法的可行性和正确性。
In this paper , for the requirements of aeroengine testing and ws - 9 aeroengine computer aided testing ( cat ) system , a steady - state numerical model of the ws - 9 aeroengine is developed . it is discussed in detail that the structure of q440 , the ws - 9 steady - state performance program . and it is clarified that the thermodynamic mumerical processes of the engine ' s parts 本文根据航空发动机生产试车以及完善ws ? 9发动机计算机辅助测试( computeraidedtestingcat )系统的要求，深入研究了ws ? 9发动机稳态性能计算程序q440 ，详细分析了程序的结构，分解出q440程序中各个部件模块的热力学计算步骤和过程，运用部件法建立了ws ? 9发动机的稳态模型。
The first chapter quotes three methods for determining the steady - state equivalent circuit parameters of an induction machine . they are the classical locked - rotor and no - load tests , the direct modification method and the recursive least - squares method . then a new parameter estimation method based on genetic algorithms is presented 绪论首先引述了确定感应电动机稳态模型参数的其他三种方法：传统的空载和堵转试验方法、直接修正参数法和递推最小二乘法，并由此提出基于遗传算法的参数识别技术。
Firstly , the performance is calculated at the design point of the ws - 9 aeroengine by using the numerical model established . secondly , after obtaining the performance coupling parameters , the steady - state performance of the non - designed points is caculated . third , respectively make the limitation of rotate speed of the high pressure rotor and low pressure rotor equal to corresponding parameters of designed point , after the data calculated compared with those of designed point and actual testing of the manufactory , the error is obtained 首先，用所建立的发动机数学模型计算了发动机在设计点的各项性能，第二，根据发动机各部件的耦合特性参数计算得到发动机在非设计点状态下的各项稳态性能，第三，分别设定限制高压转子转速和低压转子转速逼近设计点条件下对应的参数，将计算得到的性能数据与设计点性能进行了比较，并将非设计点的计算结果与生产试车过程实测的性能数据进行对比，给出了该稳态模型计算结果与实际试车数据的误差。
All these changes , which are of importance to subsynchronous oscillation analysis , cannot be described with the quasi steady state ( qss ) model any more . therefore , the deficiency of qss - model - based eigenvalue method is pointed out and a novel method named complex torque coefficient - test signal method is adopted to analyze the subsynchronous oscillation caused by hvdc or facts devices 基于此，指出了采用准稳态模型进行hvdc系统次同步振荡分析的局限性，并引入了分析hvdc或含有facts装置的系统次同步振荡问题的方法：复转矩系数- - - -测试信号法。
Based on them , in this thesis , the one cycle control theory was successfully applied to the detection and control of apf for the first time . an apf using a novel unified constant - frequency integration control method was presented . the method employs an integrator with reset as its core component to achieve the detection and control of distortion current for apf at the same time 文中导出apf功率开关占空比必须满足的控制目标方程、求出apf主电路的稳态模型、建立了通用常频积分复位控制apf的数学模型，用简单的模拟电路实现apf的通用常频积分复位控制电路和通用常频积分复位控制apf系统。
By selecting the voltage space vector of the voltage across the equivalent converter impedance as the control variables , the steady - state model of hvdc - vsc is developed . on this basis , a steady - state feedback linearization strategy is proposed , then , linear and decoupled control is realized using pi controllers and feedforward compensation 建立了以vsc等效换流阻抗上的基波压降所对应的电压空间矢量为控制量时hvdc - vsc的稳态模型，并根据所建立的稳态模型，提出了基于稳态模型的hvdc - vsc反馈线性化控制策略。
