Common-Mode-Voltage-Reduced Model-Predictive Control Scheme for Current-Source-Converter-Fed Induction Motor Drives

Gao, Hang; Wu, Bin; Xu, Dewei; Pande, Manish; Aguilera, Ricardo P.

doi:10.1109/tpel.2016.2601143

Cited by 50 publications

(21 citation statements)

References 26 publications

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“…The matrices Φ and Λ, the current reference sequence I ⋆ ab (k+1), and the input reference sequence U ⋆ (k) are defined in the appendix. Then, in absence of constraints (i.e., using (19) in ∂JN ∂U = 0), the unconstrained solution of the problem (16a) is given by:…”

Section: A Optimization Problem Reformulationmentioning

confidence: 99%

“…Despite the benefit of the reduction in the required calculation time to obtain the OCI, this basic single-step predictive current controller can lead to a high CMV since it is only formulated to consider the current tracking error. Mitigation of CMV in medium/high power applications is important to enhance the reliability of the system 1 (preventing the premature failure of motor insulations, bearing currents, electromagnetic interference problems and ground faults) [17]- [19]. To address this, in [15] a secondary optimization is considered which reduces the resulting CMV.…”

Section: Introductionmentioning

confidence: 99%

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Multistep Model Predictive Control for Cascaded H-Bridge Inverters: Formulation and Analysis

Baidya

Aguilera

Acuna

et al. 2018

IEEE Trans. Power Electron.

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120

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In this work, a suitable long prediction horizon (multistep) model predictive control (MPC) formulation for cascaded H-bridge inverters is proposed. The MPC is formulated to include the full steady-state system information in terms of output current and output voltage references. Generally, basic single-step predictive controllers only track the current references. As a distinctive feature, the proposed MPC also tracks the control input references, which in this case is designed to minimize the common-mode voltage (CMV). This allows the controller to address both output current and CMV targets in a single optimization. To reduce the computational effort introduced by a long prediction horizon implementation, the proposed MPC formulation is transformed into an equivalent optimization problem that can be solved by a fast sphere decoding algorithm. Moreover, the benefits of including the control input references in the proposed formulation are analyzed based on this equivalent optimization problem. This analysis is key to understand how the proposed MPC formulation can handle both control targets. Experimental results show that the proposal provides an improved steady-state performance in terms of current distortion, inverter voltages symmetry, and CMV.

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Section: A Optimization Problem Reformulationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Multistep Model Predictive Control for Cascaded H-Bridge Inverters: Formulation and Analysis

Baidya

Aguilera

Acuna

et al. 2018

IEEE Trans. Power Electron.

Self Cite

120

View full text Add to dashboard Cite

show abstract

“…The controller provides a discrete time model of quasi-Z-source inverter for predicting the future performance of the variables for every switching state with a set of multiobjective control variables entirely in one cost function. In [153], a common-mode voltages reduced modelpredictive control is proposed to eliminate the common-mode voltages peak value by choosing best space vectors for equally current-source inverter and current-source rectifier and at the same time. In [154], a direct model predictive current control scheme is presented for quasi-Z-source inverters.…”

Section: Intelligent Technique-based Control Of Microgrid Hybrid Enermentioning

confidence: 99%

State of the Ability in Research on Microgrid Hybrid Energy Systems

Akhtar¹,

Kinmani²,

Jamil³

2019

JESTR

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The power demand with interest in green power has focused researcher to develop the distributed power generation using wind energy, solar energy, etc. With the fast depleting fossil fuel reserves, energy security and environmental concerns there is a huge requirement of alternate sources of energy to fulfill the present energy demand. Distribution generating system can support the weak grids, maintaining grid power, managing balance power and enhancing the power quality. Any research work base depends on the literature survey and the studies carried out by several kinds of research and their support to research field encourages for more scope of research. The important advantages related to microgrids have led to huge efforts to grow their dispersion in the power systems. While microgrid is fast growing but there are still various challenges to efficiently control, design, and operate microgrids when linked to the main grid, and also when in islanded mode, where wide research actions are ongoing to handle these issues. This paper presents a review of issues concerning integration of renewable energy sources to microgrids and offers a description of research in areas related to economic feasibility of microgrids system, including dynamic analysis of microgrid hybrid system in grid-connected mode, application of power electronics, microgrid operation, and control.

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“…This will allow significantly increasing the operating switching frequencies when compared to conventional insulated gate bipolar transistor (IGBT) based Si technologies. As a consequence, CMV-derived issues will become more prevalent, as the faster switching will introduce faster CMV variations over time (dv/dt) [9][10][11]20].Considering all the previous, mitigation of CMV in electric drives has become a relevant research topic for the scientific community and the industry [6,7,[21][22][23]. In this context, the inclusion of dedicated filters (passive or active) [21,23,24] and the implementation of specific modulation techniques [21,[24][25][26] are widespread CMV reduction solutions.Alternatively, it is possible to use specific power conversion topologies (derivatives from the conventional two-level three-phase inverter topology) to achieve the same goals.…”

mentioning

confidence: 99%

“…Considering all the previous, mitigation of CMV in electric drives has become a relevant research topic for the scientific community and the industry [6,7,[21][22][23]. In this context, the inclusion of dedicated filters (passive or active) [21,23,24] and the implementation of specific modulation techniques [21,[24][25][26] are widespread CMV reduction solutions.…”

mentioning

confidence: 99%

Mitigation of Common Mode Voltage Issues in Electric Vehicle Drive Systems by Means of an Alternative AC-Decoupling Power Converter Topology

et al. 2019

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Electric vehicles (EV) are gaining popularity due to current environmental concerns. The electric drive, which is constituted by a power converter and an electric machine, is one of the main elements of the EV. Such machines suffer from common mode voltage (CMV) effects. The CMV introduces leakage currents through the bearings, leading to premature failures and reducing the propulsion system life cycles. As future EV power converters will rely on wide bandgap semiconductors with high switching frequency operation, CMV problems will become more prevalent, making the research on CMV mitigation strategies more relevant. A variety of CMV reduction methods can be found in the scientific literature, such as the inclusion of dedicated filters and the implementation of specific modulation techniques. However, alternative power converter topologies can also be introduced for CMV mitigation. The majority of such power converters for CMV mitigation are single-phase topologies intended for photovoltaic applications; thus, solutions in the form of three-phase topologies that could be applied to EVs are very limited. Considering all these, this paper proposes alternative three-phase topologies that could be exploited in EV applications. Their performance is compared with other existing proposals, providing a clear picture of the available alternatives, emphasizing their merits and drawbacks. From this comprehensive study, the benefits of a novel AC-decoupling topology is demonstrated. Moreover, an adequate modulation technique is also investigated in order to exploit the benefits of this topology while considering a trade-off between CMV mitigation, efficiency, and total harmonic distortion (THD). In order to extend the results of the study close to the real application, the performance of the proposed AC-decoupling topology is simulated using a complete and accurate EV model (including vehicle dynamics and a detailed propulsion system model) by means of state-of-the-art digital real-time simulation.Energies 2019, 12, 3349 2 of 27 the commutations of the power converter devices generate significant high-frequency CMV variations (Figure 1a). As a result, these voltage variations can produce not only high electromagnetic interferences (EMI) [6][7][8], but also shaft voltages (Figure 1b) in the electric machine [9][10][11], producing new capacitive paths [10]. These paths result in high-frequency leakage currents (Figure 1c) circulating through the motor bearings [12][13][14]. The most relevant capacitive paths are depicted in Figure 2, where the most significant bearing currents produced by CMV are the capacitive currents, electrostatic discharge currents, circulating currents, and rotor ground currents [9,13]. As bearings are critical components for the electric machine [10], a number of industrial companies are currently analyzing the degradation problems generated by such bearing currents [15][16][17].Regarding this issue, it is important to remark that although the majority of current industrial solutions rely on silicon-bas...

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Common-Mode-Voltage-Reduced Model-Predictive Control Scheme for Current-Source-Converter-Fed Induction Motor Drives

Cited by 50 publications

References 26 publications

Multistep Model Predictive Control for Cascaded H-Bridge Inverters: Formulation and Analysis

Multistep Model Predictive Control for Cascaded H-Bridge Inverters: Formulation and Analysis

State of the Ability in Research on Microgrid Hybrid Energy Systems

Mitigation of Common Mode Voltage Issues in Electric Vehicle Drive Systems by Means of an Alternative AC-Decoupling Power Converter Topology

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