Direct Power Control for Three-Phase Two-Level Voltage-Source Rectifiers Based on Extended-State Observation

Song, Zhanfeng; Tian, Yanjun; Yan, Zhuo; Chen, Zhe

doi:10.1109/tie.2016.2547859

Cited by 59 publications

(27 citation statements)

References 39 publications

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“…It can be seen from the above equation that both the control model of d-axis output current and the control model of q-axis output current on the grid side contain only their respective components so that the system achieves decoupling control [24]. In this way, it will be more accurate and simple when designing the PI controller of the system; thereby the control of the system becomes more precise.…”

Section: Voltage and Current Double Closed Loop Pi Control Strategy Amentioning

confidence: 99%

DC Side Bus Voltage Control of Wind Power Grid-Connected Inverter Based on Second-Order Linear Active Disturbance Rejection Control

Zhao

Zhou

et al. 2019

Energies

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In order to improve the dynamic response speed and the steady-state performance of the DC side bus voltage of the wind power grid-connected inverter, a mathematical model of a typical three-phase voltage type PWM (Pulse Width Modulation, PWM) grid-connected inverter was established, and its traditional voltage-current double closed loop with proportional-integral control method was analyzed. Then a second-order linear active disturbance rejection controller that does not depend on system model information was designed to replace the traditional voltage outer loop proportional-integral controller, thus a new double closed-loop control structure was formed to control it. The frequency domain theory was used to analyze the convergence of the third-order linear extended state observer and the influence of the total disturbance on the performance of the third-order linear extended state observer. The parameter tuning scheme of the designed controller was given. Finally, the 1.5 MW direct-driven permanent magnet wind power generation system was built in the Matlab/Simulink software and the control effects of the two control modes under different working conditions are compared. The simulation results show that the control scheme designed in this paper is superior to the traditional proportional-integral controller which has good anti-interference characteristics and robustness. Especially it has a good stability effect on DC side bus voltage fluctuations.

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Section: Voltage and Current Double Closed Loop Pi Control Strategy Amentioning

confidence: 99%

DC Side Bus Voltage Control of Wind Power Grid-Connected Inverter Based on Second-Order Linear Active Disturbance Rejection Control

Zhao

Zhou

et al. 2019

Energies

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show abstract

“…Moreover, it is necessary to require a small sampling time to obtain a reasonable steady-state and good transient performances. To overcome these issues, various approaches have been developed such as using DPC established on extended-state observation with PWM [18], port-controlled Hamiltonian system [12], sliding mode control [19], and predictive control [20][21][22][23].…”

Section: Introductionmentioning

confidence: 99%

“…Estimate sw c for all switching states based on(13). Predict the neutral-point voltage u p z (k + 1) by using(18). Evaluate the cost function g md f from(19).…”

mentioning

confidence: 99%

A Modified Model Predictive Power Control for Grid-Connected T-Type Inverter with Reduced Computational Complexity

et al. 2019

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This study proposed a modified power strategy based on model predictive control for a grid-connected three-level T-type inverter. The controller utilizes the mathematical model to forecast the performance of the grid current, the balance of DC-bus capacitor voltages and switching frequency. The proposed method outlines a new technique to formulate a control objective. The control objective includes the absolute error of the inverter voltage reference and its possible values instead of the grid current error. By using the modified equivalent transformations in the cost function, the execution time was reduced 22% compared to the traditional model predictive control while maintaining the high dynamic performances of the power and low total harmonic distortion of the current. A comparative investigation showed that the proposed method obtains a high-performance control compared with the classical power control scheme with linear PI controllers and space vector modulation. The feasibility of the proposed method was verified by the simulation and experimental results.

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“…These multilevel topologies allow the output voltage to be closer to sinusoidal wave by increasing the number of voltage levels, and reduce the harmonic distortion reported in the literature [2,3]. Among these topologies, the cascaded neutral point clamped (NPC)/h-bridge (CNHB) topology has the advantage of being easier to increase the output voltage than in other multilevel topologies such as the cascaded h-bridge, neutral point clamped, and flying capacitor, because of the possibility of modularization [4][5][6]. Figure 1 illustrates a multilevel topology widely used in applications where a rectifier is typically used in front of a system.…”

Section: Introductionmentioning

confidence: 99%

An Enhanced Control Scheme Based on New Adaptive Filters for Cascaded NPC/H-Bridge System

et al. 2018

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This paper studies the voltage fluctuation of dc-link generated in a 13-level cascaded neutral point clamped (NPC)/h-bridge (CNHB) with single-phase active front end (AFE) at the input side of each cell. The voltage fluctuation may deteriorate the power factor (PF) and current harmonics in the system. In this paper, new adaptive filters are proposed to overcome the problem. The center frequency of the proposed filters can be automatically varied, which allows to eliminate the specific harmonics in the dc-link well rather than the conventional one. Therefore, it can reduce the fluctuation of dc-link and maintain high PF and low current harmonic distortion without additional circuits externally or the current harmonics injection technique. As a result, capacitance for the dc-link can be optimally designed, and even cost and volume of the system can be reduced. This paper analyzes reasons of increasing voltage fluctuation theoretically and the conventional filter and proposed two types of adaptive filters are compared. In addition, the optimal design method of the dc-link capacitor necessarily used in NPC/h-bridge is presented. To verify the principle and feasibility of the proposed control method, a simulation and experiment are implemented with the CNHB system.

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Direct Power Control for Three-Phase Two-Level Voltage-Source Rectifiers Based on Extended-State Observation

Cited by 59 publications

References 39 publications

DC Side Bus Voltage Control of Wind Power Grid-Connected Inverter Based on Second-Order Linear Active Disturbance Rejection Control

DC Side Bus Voltage Control of Wind Power Grid-Connected Inverter Based on Second-Order Linear Active Disturbance Rejection Control

A Modified Model Predictive Power Control for Grid-Connected T-Type Inverter with Reduced Computational Complexity

An Enhanced Control Scheme Based on New Adaptive Filters for Cascaded NPC/H-Bridge System

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