Nonlinear Control Strategies of Three-Phase Boost-Type PWM Rectifiers

Wang, Jiuhe; Xia, Peirong; Zhang, Jinlong

doi:10.1109/case.2009.102

Cited by 18 publications

(20 citation statements)

References 4 publications

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“…The disadvantage of SONTD (5) is that it has a small steady tracking error in Xl(t), this can be solved by multiplying a factor. For SONTD (5), it has the optimal performance under step type of inputs when a=500 and <5=0.025. From Fig.8, it can be seen that when the input is a sine signal, the performance of SONTD (5) is poor.…”

Section: ) Analysis On Simulation Resultsmentioning

confidence: 99%

“…The parameters can be selected according to the frequency of the input signal, the higher the frequency is, the larger the accelerating factor a is, <5 is calculated by <5=0.00005a. For step type of input functions (step function and pulse function), a new type of SONTD (5) constructed by a nonlinear saturation function sinsign is chosen, the accelerating factor a is decided based on the type of input functions, also <5 is calculated by <5=0.00005a.…”

Section: Discussionmentioning

confidence: 99%

“…In Passivity based control of voltage source PWM rectifiers, damping injecting is used to design passivity based controller [5][6]. In order to improve the dynamic state performances of PWM rectifiers, variable damping is desired in Fig.9.…”

Section: The Application Of Sontdmentioning

confidence: 99%

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A new second order nonlinear tracking differentiator and application

Wang

Zhang

Yan

2010

2010 International Conference on Computer Design and Applications

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A Second-order nonlinear tracking differentiator ( SONTD ) constructed by a symbol function sign and a linear saturation function sat has good tracking and differential performances for smooth continuous input functions, but it isn't appropriate for step type of input functions, In order to overcome the defects of the SONTD constructed by sign and sat, a new nonlinear saturation function composed of a sine function and a sign function is introduced, and a new type of second-order nonlinear TD is constructed based on the nonlinear saturation function. The new SONTD is used in Passivity based control of voltage source PWM rectifiers to improve the transient performances of rectifiers. Simulation results show that the new type of SONTD has good tracking and differential performances for step type of input functions, but it isn't appropriate for smooth continuous input functions.

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Section: ) Analysis On Simulation Resultsmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

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A new second order nonlinear tracking differentiator and application

Wang

Zhang

Yan

2010

2010 International Conference on Computer Design and Applications

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“…But in (4), there exists a differential calculation link of current variable, and it is easy to introduce interference in actual application [9,15,16,19,23]. Then, Taking integral operation for the both sides of (4), and combining the relationship between flux-linkage and electromotive force, the following equations can be derived:…”

Section: Improved Virtual Flux-linkage Observermentioning

confidence: 99%

“…Hereinto, direct power control (DPC) strategy has become one of the hot research topics in recent years, because of its fast dynamic response, simple structure, and high power factor, and so on [8,11,12,14,[16][17][18]. In general station, the control system of PWM rectifier contains more sensors and complex detection device, which not only increases the volume of the system device and improves the system cost, but also reduces the system reliability of three-phase PWM rectifier.…”

Section: Introductionmentioning

confidence: 99%

Direct Power Control Strategy of PWM Rectifier Based on Improved Virtual Flux-Linkage Observer

2017

Journal of Control Science and Engineering

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In order to achieve the low cost and high performance control of three-phase PWM rectifier, a direct power control (DPC) strategy based on a new-style virtual flux-linkage observer is proposed. The model of three-phase PWM rectifier and the principle of virtual flux-linkage vector control are introduced firstly. Then, in order to avoid the effect of integral initial value and cumulative deviation, three first-order low-pass filters are cascaded to replace the pure integral link; an improved virtual flux-linkage observer of threephase power grid is presented. From the observed virtual flux-linkage, the voltage and instantaneous power of three-phase power grid are online estimated. On this basis, the power grid voltage sensorless direct power control system of three-phase PWM rectifier is designed. Simulation results have shown that, both in the rectifying state and in the inverting state, the power grid side current and the DC side voltage of three-phase PWM rectifier all can be effectively controlled; the high power factor operation of three-phase PWM rectifier is realized.

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Passivity-Based Control With Active Disturbance Rejection Control of Vienna Rectifier Under Unbalanced Grid Conditions

Wang

et al. 2020

IEEE Access

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In this paper, a practical passivity-based control (PBC) with active disturbance rejection control (ADRC) is proposed to improve performance of the Vienna rectifier under unbalanced grid conditions. In general, the traditional double-loop control based on positive and negative sequence transformation is used in Vienna rectifier under unbalanced grid conditions. However, it could not fundamentally solve the additional time delay caused by the second harmonic filter and loss of performance caused by a linear weighted sum of proportional integral (PI) controller. What's more, the complexity of the controller is high for the positive and negative sequence currents need to be controlled separately. The PBC is a nonlinear controller based on energy dissipation and it has strong robustness to interference. Further, the line voltage based PBC in inner current loop can deal with the voltage unbalance effectively and easily without negative sequence transformation. To improve the disturbance rejection ability, the ADRC is applied in outer voltage loop, which could overcome PI's drawbacks of step overshoot and slow response. Under unbalanced grid conditions, the proposed control strategy has good performance, easy implementation and less consuming time with PBC control in inner current loop, and it has strong robustness and fast track performance with ADRC control in outer voltage loop. The detailed mathematical model, control principle and controller design of the Vienna rectifier are thoroughly analyzed. In addition, simulation results based on SIMULINK are also given in the paper. Finally, a downsize 5kW Vienna rectifier prototype is built to validate the correctness and effectiveness of the proposed strategy. INDEX TERMS Active disturbance rejection control, passivity-based control, unbalanced grid condition, Vienna rectifier.

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Nonlinear Control Strategies of Three-Phase Boost-Type PWM Rectifiers

Cited by 18 publications

References 4 publications

A new second order nonlinear tracking differentiator and application

A new second order nonlinear tracking differentiator and application

Direct Power Control Strategy of PWM Rectifier Based on Improved Virtual Flux-Linkage Observer

Passivity-Based Control With Active Disturbance Rejection Control of Vienna Rectifier Under Unbalanced Grid Conditions

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