Equivalent Space Vector Output of Diode Clamped Multilevel Inverters Through Modulation Wave Decomposition Under Carrier-Based PWM Strategy

He, Yangyang; Liu, Yunfeng; Lei, Chao; Liu, Jinjun

doi:10.1109/access.2020.2999879

Cited by 14 publications

(8 citation statements)

References 30 publications

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“…In [4], the essential relationship between SVPWM and SPWM is studied in detail, and the zero sequence component of three-phase converter is theoretically derived and simulated, which can provide a theoretical basis of the realization of equivalent SVPWM for Y-type two-level PFC. The space-vector coordinate values in two-phase static coordinate system are shown in Fig.13, which can be obtained from three-phase coordinate system by using Clark transformation matrix.…”

Section: New Equivalent Svpwm Based On Y-type Pfc Circuitmentioning

confidence: 99%

Research on the Simplified SVPWM for Three-Phase/Switches Y-Type Two-Level Rectifier

Zheng

et al. 2020

IEEE Access

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The three-phase/switch Y-type two-level rectifier is widely used in the unidirectional powerflowing applications such as LED illumination, communication and uninterruptible power supply. This paper presents the working principle of three-phase/switch Y-type two-level rectifier, and proposes two simple and fast modulation techniques (12-sector SVPWM and simplified equivalent SVPWM) based on the virtual vectors. The reference vectors of the 12-sector SVPWM are synthesized by utilizing real basic vectors and virtual vectors linearly combined from these real vectors in a switching period. So the created virtual vectors can reduce the error of reference voltage synthesis, contributing to better input current performance, this paper proposes a simplified 12-sector equivalent SVPWM, and shows the novel threephase modulation wave expressions and waveforms. The proposed simplified 12-sector equivalent SVPWM does not need the process of sector determination with reducing computational processing time which is attractive for digital implementation. Finally, performance of the proposed modulation methods for a Y-type two-level rectifier using a 5kW prototype is experimentally verified.

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Section: New Equivalent Svpwm Based On Y-type Pfc Circuitmentioning

confidence: 99%

Research on the Simplified SVPWM for Three-Phase/Switches Y-Type Two-Level Rectifier

Zheng

et al. 2020

IEEE Access

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“…The important role of MLIs in power conversion applications is more than obvious [1] - [3]. One of the major challenges of MLI operation is output voltage THD minimization while maintaining desired MI [4].…”

Section: Introductionmentioning

confidence: 99%

“…MLIs generally fall into 3 main categories: 1) Multipoint Clamped (MPC) with non-isolated dc sources, which include the diode-clamped MLIs [1]- [3] and the emerging T-type ("Nested") MPCs [20]. These MLIs utilize a simple Single Pole Multiple Throw (SPMT) switch configuration (cf.…”

Section: Introductionmentioning

confidence: 99%

Analytical Formulation and Minimization of Voltage THD in Staircase Modulated Multilevel Inverters With Variable DC Ratios

2020

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“…However, it only studies a three-level converter and does not study higher-level output converters. Reference [17] studies an equivalent relationship between SVPWM and CBPWM of the n-level converter, it assumes the DC side voltage of the converter is constant and does not consider the unbalance of DC side capacitors. Therefore, there is no modulation strategy used to solve the neutral current generated by the voltage vector.…”

Section: Introductionmentioning

confidence: 99%

Research on the Equivalent Virtual Space Vector Modulation Output of Diode Clamped N-level Converter under Multi-Modulation Carrier Modulation

Lei

Liu

et al. 2020

Energies

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Diode-clamped multi-level converters have DC-side capacitors in series, which will lead to the unbalance of DC-side capacitor voltage, the distortion of the output waveform, the increase of total harmonic distortion (THD), and even the damage of switching devices, which will make the system inoperable. The proposal of virtual space vector pulse-width modulation (VSVPWM) realizes the balanced control of the capacitor voltage, but when the output level of converter increases, the implementation of VSVPWM becomes very complicated, and the amount of calculation also increases greatly, thus hindering its application in the multi-level circuit. Compared with VSVPWM, the carrier-based pulse-width modulation (CBPWM) is simple to operate and easy to implement. If the equivalent relationship between CBPWM and VSVPWM can be found, the application of VSVPWM can be generalized to any level, and the advantages of VSVPWM can be fully utilized. This paper aims to study the inner relationship of VSVPWM and the multi-modulation carrier CBPWM (MCBPWM). After strict theoretical analysis, the equivalent relationship of VSVPWM and MCBPWM in the three-level and four-level and converter is realized by injecting the zero-sequence component into the modulation waves. Furthermore, the equivalent relationship between VSVPWM and MCBPWM is deduced to the N-level converter. Finally, the correctness of the relevant theoretical analysis is verified by the experiment.

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Equivalent Space Vector Output of Diode Clamped Multilevel Inverters Through Modulation Wave Decomposition Under Carrier-Based PWM Strategy

Cited by 14 publications

References 30 publications

Research on the Simplified SVPWM for Three-Phase/Switches Y-Type Two-Level Rectifier

Research on the Simplified SVPWM for Three-Phase/Switches Y-Type Two-Level Rectifier

Analytical Formulation and Minimization of Voltage THD in Staircase Modulated Multilevel Inverters With Variable DC Ratios

Research on the Equivalent Virtual Space Vector Modulation Output of Diode Clamped N-level Converter under Multi-Modulation Carrier Modulation

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