An Energy-Based Control for an&amp;lt;tex&amp;gt;$n$&amp;lt;/tex&amp;gt;-H-Bridges Multilevel Active Rectifier

Dell’Aquila, A.; Liserre, Marco; Monopoli, Vito Giuseppe; Rotondo, Paola

doi:10.1109/tie.2005.843971

Cited by 70 publications

(41 citation statements)

References 10 publications

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“…where, the free mode dynamics, x d f , is expressed bẏ In fact, the internal generated dc-link voltage dynamic is denoted by superscript (d) against the externally fixed reference battery current which is denoted by superscript ( * ) [17]. Consider (13) with the following parameters…”

Section: B Dc-link Voltage Control Supplying Constant Power Loadmentioning

confidence: 99%

Passivity-Based Control of Switched Reluctance-Based Wind System Supplying Constant Power Load

Namazi

Nejad

Tabesh

et al. 2018

IEEE Trans. Ind. Electron.

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Abstract-This paper presents a passivity-based control (PBC) scheme for the Switched Reluctance Generator (SRG) in smallscale wind energy conversion systems (WECSs) for DC microgrid application. The main objective is to stabilize the output voltage in case the system supplies constant power loads (CPLs) and operates with maximum power point tracking (MPPT). Stability improvement and dc-link ripple reduction in the presence of CPLs is achieved using system level modeling of SRG-based DC microgrid through the Euler-Lagrange system (ELS) from the view point of the machine physical structure. Compared with other control methods, the proposed MPPT method based on passivity-based speed controller employs the back-EMF in the generation process as a position-dependent voltage source to overcome the major challenge of SRG complicated uncertain dynamic model. To deal with the time-varying inductance and back-emf of SRG, an adaptation mechanism is incorporated in proposed adaptive PBC and the control design is constructed by using the Lyapunov theorem where the closed-loop stability is ensured. The effectiveness of the proposed method in avoiding instability effects of SRG and CPL with voltage ripple reduction and precise wind turbine speed tracking is investigated with simulation results and validated with experimental by using a four-phase, 8/6 SRG drive system. Switched Reluctance Generator (SRG); Wind turbine; Passivity-based control; Constant-power load.

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Section: B Dc-link Voltage Control Supplying Constant Power Loadmentioning

confidence: 99%

Passivity-Based Control of Switched Reluctance-Based Wind System Supplying Constant Power Load

Namazi

Nejad

Tabesh

et al. 2018

IEEE Trans. Ind. Electron.

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“…In the voltage region , cells must work in mode " 1" (or " 1"), one in PWM and the rest in mode "0" so, the total current fed to all the cells in the region is as follows: (18) According to (18), at the sampling periods of the region , only cells have the chance of being charged. So, in the worst case scenario, only the cells attached to the heavy loads are selected to take part in the modulation if , and to be completely on if .…”

Section: A Unity Power Factor Application 1) Load Power Limits In Stmentioning

confidence: 99%

“…This can become difficult if the loads attached to the cells are not equal, or the series H-bridges have slightly different characteristics. Thus, a variety of methods have been proposed to maintain the voltage balancing across the capacitors [7]- [18].…”

Section: Introductionmentioning

confidence: 99%

“…In [7], [8], and [17], balancing of capacitor voltages and power factor correction have been realized for a rectifier with two series H-bridges, while the extension of theses methods to a higher number of series H-bridges is not straightforward. In [18], an energy-based approach has been applied to the control of an N-H-bridge active rectifier. The proposed approach is based on the full decoupling of the H-bridges via the proper design of a passivity-based controller for each cell.…”

Section: Introductionmentioning

confidence: 99%

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A Modular Strategy for Control and Voltage Balancing of Cascaded H-Bridge Rectifiers

Iman‐Eini

Schanen

Farhangi

et al. 2008

IEEE Trans. Power Electron.

189

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Abstract-In this paper, a new strategy for voltage balancing of distinct dc buses in cascaded H-bridge rectifiers is presented. This method ensures that the dc bus capacitor voltages converge to the reference value, even when the loads attached to them are extracting different amounts of power. The proposed method can be used for an arbitrary number of series H-bridges, different voltage levels, and different power levels in unidirectional or bidirectional rectifiers. To reduce the current harmonics and distortion, the input current is programmed to be sinusoidal and in phase with the input voltage; however, it is possible to adjust the input power factor to control both the active and reactive powers. In the proposed approach, both the low frequency (stepped modulation) and high frequency [pulse-width modulation (PWM)] switching methods are utilized to improve the performance of the rectifier. Using theoretical analysis, the acceptable load power limits for a rectifier with N-H-bridge cells are derived. The validity of the proposed method is verified by simulation and experimental results.

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“…The system is connected to the grid through a smoothing inductor L, and it is assumed that pure resistive loads R 1 and R 2 are connected to each DCLink capacitor C 1 and C 2 respectively. The system parameters and variables are described in The equations that describe the CHB behavior are well known and they have been reported in several previous works [14], these equations are…”

Section: System Descriptionmentioning

confidence: 99%

Controller design for a single-phase two-cell multilevel cascade H-bridge converter

Vázquez

Leon

Carrasco

et al. 2008

2008 IEEE International Symposium on Industrial Electronics

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An Energy-Based Control for an<tex>$n$</tex>-H-Bridges Multilevel Active Rectifier

Cited by 70 publications

References 10 publications

Passivity-Based Control of Switched Reluctance-Based Wind System Supplying Constant Power Load

Passivity-Based Control of Switched Reluctance-Based Wind System Supplying Constant Power Load

A Modular Strategy for Control and Voltage Balancing of Cascaded H-Bridge Rectifiers

Controller design for a single-phase two-cell multilevel cascade H-bridge converter

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