Sensorless Control Technique for PWM Rectifiers With Voltage Disturbance Rejection and Adaptive Power Factor

Ketzer, Marcos B.; Jacobina, Cursino B.

doi:10.1109/tie.2014.2341603

Cited by 50 publications

(47 citation statements)

References 32 publications

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“…As shown in (12), the accuracy of state estimation is affected by the magnitude of ξ(·), and hence depends on the performance of the proposed UIE. Since fast and accurate estimation of d e (·) is provided by the UIE according to Theorem 1, quick convergence of ξ(t) → 0 is guaranteed.…”

Section: Closed-loop Analysismentioning

confidence: 99%

“…A common practice is to maximize the inherited robustness of a controller by careful parameter design and tuning [5], [6]. Further robustness improvement can be achieved via advanced techniques such as nonlinear control [7]- [9], H ∞ or optimized loop-shaping robust control [10]- [12], and adaptive intelligent control [13], [14]. A more attractive approach distinguished from the aforementioned comes with the concept of unknown-input estimation, which brings disturbance rejection to a higher level, as demonstrated by various industrial applications [15]- [22].…”

Section: Introductionmentioning

confidence: 99%

“…The use of an extended state observer [21], [23] or the internal model principle [12], [24] can effectively estimate a class of partially unknown inputs modeled in the form of constant-coefficient differential equations. A prerequisite is that characteristics of the exogenous inputs such as the frequency of each sinusoidal component must be known.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

A Novel Actuator Controller: Delivering a Practical Solution to Realization of Active-Truss-Based Morphing Wings

Tang

Chen

et al. 2016

IEEE Trans. Ind. Electron.

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Abstract-A novel actuator controller is proposed in this paper for active-truss-based morphing wings (ATBMWs). An ATBMW is a new type of smart structure capable of smooth and continuous profile change, and has the potential to provide better stealth and aerodynamic performance over airfoils with discrete control surfaces. However, the sophisticated ATBMW framework and large amount of highly interacted actuators make it difficult to obtain the overall rigid-body dynamics of the wing for controller design and inconvenient to tune controllers on board. The focus of this study is thus to solve the aforementioned problems by developing an actuator-level control scheme that does not rely on the wing rigid-body dynamics and on-board tuning. The linear-quadratic-Gaussian (LQG) controller is adopted for actuator trajectory tracking, and a novel unknown-input estimator (UIE) is devised to handle un-modeled dynamics. By integrating the UIE with the LQG algorithm, a new tracking controller with enhanced tolerance to uncertainties is constructed. It is shown in simulations and experiments on an ATBMW prototype that the proposed UIE-integrated LQG controller can be designed simply using the known actuator dynamics without on-board tuning, and superior trajectory tracking of actuators was observed despite the presence of un-modeled dynamics and exogenous disturbances.

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Section: Closed-loop Analysismentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

A Novel Actuator Controller: Delivering a Practical Solution to Realization of Active-Truss-Based Morphing Wings

Tang

Chen

et al. 2016

IEEE Trans. Ind. Electron.

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“…And then, the vector control method based on virtual flux oriented is widely used to the power grid voltage sensorless control scheme of threephase PWM rectifier. But, in the conventional virtual fluxlinkage observer, there exists a pure integral link, and then the estimation process of virtual power grid flux-linkage is inevitably affected by the initial value and the cumulative deviation of the integrator [2,[20][21][22][23]. In order to overcome the deficiencies of pure integrator, a first-order low-pass filter is adopted to replace the pure integrator; the initial value problem of pure integrator can be successfully solved [13]; however, the problem of amplitude and phase deviation is caused.…”

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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“…VSR has a serious of characteristics, such as input current being sine wave, operation in unity power factor, and bidirectional flow of power [1]. Then, some industrial fields, such as industrial frequency converter have put an urgent need for the PWM rectifier technology [2][3]. Three-phase power grid is often in unbalanced station [2].…”

Section: Introductionmentioning

confidence: 99%

Estimation method of unbalanced power grid voltage in PWM Rectifier control system

Bu¹,

Dong²

2017

Proceedings of the 2nd Annual International Conference on Electronics, Electrical Engineering and Information Science (EEEIS 20

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To achieve the self-sensing detection of unbalanced power grid voltage, control system under the unbalanced power grid conditions are analyzed. Then the positive and negative sequence virtual flux of power grid is separated; then an estimation algorithm of unbalanced power grid voltage is presented by the positive and negative sequence virtual flux components. In addition, the unbalanced power grid voltage sensorless control system is constructed. The simulation results show that the accurate self-sensing detection of unbalanced power grid voltage can be realized; and in the steady state, a high stability can be obtained in the DC side voltage of PWM rectifier.

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Sensorless Control Technique for PWM Rectifiers With Voltage Disturbance Rejection and Adaptive Power Factor

Cited by 50 publications

References 32 publications

A Novel Actuator Controller: Delivering a Practical Solution to Realization of Active-Truss-Based Morphing Wings

A Novel Actuator Controller: Delivering a Practical Solution to Realization of Active-Truss-Based Morphing Wings

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

Estimation method of unbalanced power grid voltage in PWM Rectifier control system

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