A Direct Power Control Strategy for AC/DC Converter Based on Best Switching State Approach

Huang, Jingjing; Guo, Fanghong; Chen, Wen; Yang, Bo; Xiao, Jianfang

doi:10.1109/jestpe.2018.2832663

Cited by 41 publications

(13 citation statements)

References 31 publications

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“…This switching table enables the converter to select the appropriate of switching states. θ1 θ2 θ3 θ4 θ5 θ6 θ7 θ8 θ9 θ10 θ11 θ12 0 0 V1 V1 V2 V2 V3 V3 V4 V4 V5 V5 V6 V6 0 1 V2 V2 V3 V3 V4 V4 V5 V5 V6 V6 V1 V1 1 0 V6 V6 V1 V1 V2 V2 V3 V3 V4 V4 V5 V5 1 1 V3 V3 V4 V4 V5 V5 V6 V6 V1 V1 V2 V2 In conventional DPC, a total of four voltage sensors are used to measure the three-phase AC input voltage and DC output voltage, while three current sensors are used to measure the three-phase input currents [12]. Then, the measured currents and voltages are fed into two "abc-αβ" blocks which utilize the Clarke Transformation.…”

Section: Basic Structure Direct Power Controlmentioning

confidence: 99%

Analysis of direct power control AC-DC converter under unbalance voltage supply for steady-state and dynamic response

Yusoff¹,

Razali²,

Karim³

et al. 2020

IJECE

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This paper presents an analysis of Direct Power Control (DPC) technique for the Three-Phase Pulse Width Modulation (PWM) AC-DC converter under unbalanced supply condition. Unbalance condition will cause the presence of unbalanced current and voltages thus produce the negative components on the grid voltage as well as severe performance degradation of a grid connected Voltage Source Inverter (VSI). The input structures for conventional DPC has been modified with a three simpler sequence networks instead of coupled by a detailed Three-Phase system method. The imbalance voltage can be resolved by separating from the individual elements of voltage and current into symmetrical components called Sequence Network. Consequently, the input power relatively improved during unbalanced condition almost 70% through the measurement of Total Harmonic Distortion (THD) from the conventional Direct Power Control (DPC) in individual elements which is higher compared to separate components. Hence, several analyses are performed in order to analyze the steady state and dynamic performance of the converter, particularly during the load and DC voltage output reference variations.

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Section: Basic Structure Direct Power Controlmentioning

confidence: 99%

Analysis of direct power control AC-DC converter under unbalance voltage supply for steady-state and dynamic response

Yusoff¹,

Razali²,

Karim³

et al. 2020

IJECE

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show abstract

“…In recent years, investigations over control techniques for various converters have been done. In linear control, two wellknown proportional-integral (PI) and proportional-resonant (PR) controllers, and in non-linear control, sliding mode and model predictive control methods are developed for rectifiers and DC/DC converters [12][13][14][15][16][17][18]. Generally, there are two main direct power control (DPC) and voltage oriented control (VOC) methods for PWM rectifiers [17].…”

Section: Introductionmentioning

confidence: 99%

“…In linear control, two well‐known proportional–integral (PI) and proportional–resonant (PR) controllers, and in non‐linear control, sliding mode and model predictive control methods are developed for rectifiers and DC/DC converters [12–18]. Generally, there are two main direct power control (DPC) and voltage oriented control (VOC) methods for PWM rectifiers [17]. The VOC is a well‐known PI‐based controller for PWM rectifiers.…”

Section: Introductionmentioning

confidence: 99%

Small‐signal‐based study of a two stage AC/DC and DC/DC battery charger using battery one time constant model

Hajisadeghian

Birjandi

Asadi

et al. 2020

IET power electron.

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This study focuses on considering battery one time constant model in the design of controllers of a two-stage AC/DC and DC/DC battery charger using the small-signal approach. For this aim, small-signal models of DC/DC and AC/DC converters and also the battery model are obtained. Moreover, the effect of disturbance terms are analysed to be omitted in controller loops. Simulation and experimental results of a 1 kW laboratory prototype show appropriate performance of designed controllers in tracking reference signals. Also, tuned controllers using this approach have guaranteed unity power factor and low total harmonic distortion. Furthermore, a complete charge cycle of a lithium-ion battery evaluates the performance of the converter in different constant current/voltage controlling modes. In comparison with restive model consideration, results show a more accurate model with grater damping ration and better stability characteristics.

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“…In [7], unbalanced grid voltage and currents were decoupled into four dc components and separately regulated by PI controllers in positive‐ and negative‐sequence (PNS) synchronous rotating frame (SRF). The PR controller [8, 9] and direct power control [10] were adopted to control the ac grid currents in

α β

stationary frame, which avoided PNS separation and rotating coordinate transformation. Deadbeat [11] control method is the accurate control strategy based on the converter parameters.…”

Section: Introductionmentioning

confidence: 99%

Generalised model predictive control scheme for three‐level converter under unbalanced grid voltage considering full power factor operation

Xing

Qin

et al. 2020

IET Renewable Power Generation

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A Direct Power Control Strategy for AC/DC Converter Based on Best Switching State Approach

Cited by 41 publications

References 31 publications

Analysis of direct power control AC-DC converter under unbalance voltage supply for steady-state and dynamic response

Analysis of direct power control AC-DC converter under unbalance voltage supply for steady-state and dynamic response

Small‐signal‐based study of a two stage AC/DC and DC/DC battery charger using battery one time constant model

Generalised model predictive control scheme for three‐level converter under unbalanced grid voltage considering full power factor operation

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