Improving Output Performance of a Z-Source Sparse Matrix Converter Under Unbalanced Input-Voltage Conditions

Park, Kiwoo; Lee, Kyo‐Beum; Blaabjerg, Frede

doi:10.1109/tpel.2011.2170709

Cited by 64 publications

(38 citation statements)

References 30 publications

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“…Table 2 shows a comparison between the results of this work and the other Z-source matrix converters in different reports in terms of quantity of elements in topology, maximum voltage transfer ratio, the quantity and values of Z-source elements, switching frequency, output current THD and maximum tolerated abnormality of input voltage. The proposed strategy drives an IM under 40% abnormal input voltage, while [27][28][29][30] have launched the static RL load. In the recommended topology, the overall volume and weight of the system is 2.3 L which is considerably lower than the conventional back-to-back converter with a volume of 4.6 L for the same power rating and thermal limitation of the USMC described in [31,32].…”

Section: Discussionmentioning

confidence: 99%

A Current Control Approach for an Abnormal Grid Supplied Ultra Sparse Z-Source Matrix Converter with a Particle Swarm Optimization Proportional-Integral Induction Motor Drive Controller

et al. 2016

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A rotational d-q current control scheme based on a Particle Swarm OptimizationProportional-Integral (PSO-PI) controller, is used to drive an induction motor (IM) through an Ultra Sparse Z-source Matrix Converter (USZSMC). To minimize the overall size of the system, the lowest feasible values of Z-source elements are calculated by considering the both timing and aspects of the circuit. A meta-heuristic method is integrated to the control system in order to find optimal coefficient values in a single multimodal problem. Henceforth, the effect of all coefficients in minimizing the total harmonic distortion (THD) and balancing the stator current are considered simultaneously. Through changing the reference point of magnitude or frequency, the modulation index can be automatically adjusted and respond to changes without heavy computational cost. The focus of this research is on a reliable and lightweight system with low computational resources. The proposed scheme is validated through both simulation and experimental results.

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Section: Discussionmentioning

confidence: 99%

A Current Control Approach for an Abnormal Grid Supplied Ultra Sparse Z-Source Matrix Converter with a Particle Swarm Optimization Proportional-Integral Induction Motor Drive Controller

et al. 2016

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“…Additionally, the active duty cycles (dx and dy) for the modulation of the CSR stage are expressed as in Equation (2). If the reference current phasor is located in sector 1, the average DC-link voltage (VDC(av)) of the fictitious DC link produced by the maximum and second largest magnitudes of the line-to-line voltages generated by the generator is expressed as in Equation (3).…”

Section: Modulation Strategy Of Current Source Rectifier Stagementioning

confidence: 99%

“…Additionally, the active duty cycles (d x and d y ) for the modulation of the CSR stage are expressed as in Equation (2).…”

Section: Modulation Strategy Of Current Source Rectifier Stagementioning

confidence: 99%

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Balanced Current Control Strategy for Current Source Rectifier Stage of Indirect Matrix Converter under Unbalanced Grid Voltage Conditions

Bak

Lee

2016

Energies

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This paper proposes a balanced current control strategy for the current source rectifier (CSR) stage of an indirect matrix converter (IMC) under unbalanced grid voltage conditions. If the three-phase grid connected to the voltage source inverter (VSI) of the IMC has unbalanced voltage conditions, it affects the currents of the CSR stage and VSI stage, and the currents are distorted. Above all, the distorted currents of the CSR stage cause instability in the overall system, which can affect the life span of the system. Therefore, in this paper, a control strategy for balanced currents in the CSR stage is proposed. To achieve balanced currents in the CSR stage, the VSI stage should receive DC power without ripple components from the CSR stage. This is implemented by controlling the currents in the VSI stage. Therefore, the proposed control strategy decouples the positive and negative phase-sequence components existing in the unbalanced voltages and currents of the VSI stage. Using the proposed control strategy under unbalanced grid voltage conditions, the stability and life span of the overall system can be improved. The effectiveness of the proposed control strategy is verified by simulation and experimental results.

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“…현재까지 매트릭스 컨버터 분야는 변조 기법, 정류 기 법, 낮은 전압 전달률의 극복, 고조파의 영향 등에 대해 중점적으로 연구되어 왔다 [4][5][6][7][8] . 전력용 반도체로 구성된 스위치 또는 그에 따른 게이트 드라이버 회로는 전력 변환 시스템에서 쉽게 파괴될 수 있으므로 신뢰성의 향 상 문제가 대두되고 있다.…”

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A Simple Open-Circuit Fault Detection Method for a Sparse Matrix Converter

Lee

Lee²,

Joung³

2013

The Transactions of the Korean Institute of Power Electronics

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-This paper presents a diagnostic method for a sparse matrix converter that detects faults in any single switch or a pair of switches. The sparse matrix converter is functionally equivalent to the standard matrix converter but has a reduced number of switches. The proposed diagnostic method is based in the measurement of input and output currents. The currents have respective characteristic according to the location of faulty switches. This method not only detects the switches of open-circuit fault but identifies the location of the faulty switching devices without complicated calculations. The simulation and experimental results verify that, based on the proposed method, the fault of sparse matrix converter can be easily and fast detected.

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Improving Output Performance of a Z-Source Sparse Matrix Converter Under Unbalanced Input-Voltage Conditions

Cited by 64 publications

References 30 publications

A Current Control Approach for an Abnormal Grid Supplied Ultra Sparse Z-Source Matrix Converter with a Particle Swarm Optimization Proportional-Integral Induction Motor Drive Controller

A Current Control Approach for an Abnormal Grid Supplied Ultra Sparse Z-Source Matrix Converter with a Particle Swarm Optimization Proportional-Integral Induction Motor Drive Controller

Balanced Current Control Strategy for Current Source Rectifier Stage of Indirect Matrix Converter under Unbalanced Grid Voltage Conditions

A Simple Open-Circuit Fault Detection Method for a Sparse Matrix Converter

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