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小型风力发电机组优化控制策略与实验研究 被引量:3
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作者 包道日娜 张万祥 +1 位作者 刘志璋 田瑞 《热能动力工程》 CAS CSCD 北大核心 2009年第6期803-806,811,共5页
提出一种小型风力发电机组功率的优化控制策略。根据选定的300 W/24 V永磁发电机,使用Wilson叶片设计计算模型,应用MATLAB语言设计了300 W风机叶片;并针对现有风机控制系统中将控制器的设计与叶片、电机的匹配特性彼此孤立、分离的现象... 提出一种小型风力发电机组功率的优化控制策略。根据选定的300 W/24 V永磁发电机,使用Wilson叶片设计计算模型,应用MATLAB语言设计了300 W风机叶片;并针对现有风机控制系统中将控制器的设计与叶片、电机的匹配特性彼此孤立、分离的现象,设计出与风力发电机的电机、叶片相互匹配的控制器。在风洞试验中测试了样机在8、10、12、15 m/s等风速一定条件下,功率随系统电压的变化规律,当降低系统电压时,风机输出功率会一直下降,在此过程中并没有出现功率增加的现象,也就充分证明了工作在峰前区域的风力发电机,当风速大于额定风速时,控制系统可以通过减小接入系统的负载电阻值来控制其功率。这对研究小型风力发电系统的可控性、可靠性和耐久性有一定的指导意义和实用价值。 展开更多
关键词 风力发电机 叶片设计 机组功率 pwm功率控制器 风洞试验
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Predictive direct power control of three-phase PWM rectifier based on TOGI grid voltage sensor free algorithm
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作者 ZHAO Feng LI Shute +4 位作者 CHEN Xiaoqiang WANG Ying GAN Yanqi NIU Xinqiang ZHANG Fan 《Journal of Measurement Science and Instrumentation》 CAS CSCD 2022年第4期451-459,共9页
In predictive direct power control(PDPC)system of three-phase pulse width modulation(PWM)rectifier,grid voltage sensor makes the whole system more complex and costly.Therefore,third-order generalized integrator(TOGI)i... In predictive direct power control(PDPC)system of three-phase pulse width modulation(PWM)rectifier,grid voltage sensor makes the whole system more complex and costly.Therefore,third-order generalized integrator(TOGI)is used to generate orthogonal signals with the same frequency to estimate the grid voltage.In addition,in view of the deviation between actual and reference power in the three-phase PWM rectifier traditional PDPC strategy,a power correction link is designed to correct the power reference value.The grid voltage sensor free algorithm based on TOGI and the corrected PDPC strategy are applied to three-phase PWM rectifier and simulated on the simulation platform.Simulation results show that the proposed method can effectively eliminate the power tracking deviation and the grid voltage.The effectiveness of the proposed method is verified by comparing the simulation results. 展开更多
关键词 three-phase pwm rectifier predictive direct power control grid voltage sensor free algorithm third-order generalized integrator power correction
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Robust Digital Control of a Broadband PWM Power Amplifier
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作者 Nobutaka Suzuki Kohji Higuchi Tatsuyoshi Kajikawa 《Journal of Energy and Power Engineering》 2013年第10期2012-2017,共6页
Lately, it is required that the bandwidth of PWM (pulse width modulation) power amplifier is extended. For example, it is in application of the testing power supply of a low frequency immunity examination, or a clas... Lately, it is required that the bandwidth of PWM (pulse width modulation) power amplifier is extended. For example, it is in application of the testing power supply of a low frequency immunity examination, or a class-D amplifier. In this paper, the authors show that the bandwidth of PWM power amplifier can be controller. This controller is implemented on a DSP (digital can be made wider with this controller. extended by using an approximate 2DOF (2-degree-of-freedom) digital signal processor). It is demonstrated from experiments that the bandwidth 展开更多
关键词 Approximate 2DOF broadband pwm amplifier class-D amplifier robust digital control.
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Direct power control for three-level PWM rectifier based on hysteresis strategy 被引量:5
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作者 SHI TingNa WANG Jian +1 位作者 ZHANG Ce XIA ChangLiang 《Science China(Technological Sciences)》 SCIE EI CAS 2012年第11期3019-3028,共10页
This paper presents a mathematical model of three-level voltage PWM rectifier,and derives a power control model from the theory of instantaneous power.In the vector-space,the influences on instantaneous power exercise... This paper presents a mathematical model of three-level voltage PWM rectifier,and derives a power control model from the theory of instantaneous power.In the vector-space,the influences on instantaneous power exercised by all the switching vectors are studied and illustrated separately,then a direct power control(DPC) scheme for three-level PWM rectifier which uses multistage band hysteresis comparator is proposed,and a novel switching table is designed.Meanwhile,the neutralpoint voltage unbalance is inhibited by selecting the redundancy switching states of small voltage vectors.Simulation and experimental results show that the proposed strategy can not only stabilize the DC bus voltage but also realize the unity power factor operation and the balance of neutral-point voltage.Moreover,the proposed method can improve the performance of the three-level rectifier. 展开更多
关键词 direct power control hysteresis control instantaneous power neutral-point voltage balance switching table three-levelpwm rectifier
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