Triangle Carrier-Based DPWM for Three-Level NPC Inverters

Li, Kai; Wei, Min; Xie, Changjun; Deng, Fujin; Guerrero, Josep M.; Vasquez, Juan C.

doi:10.1109/jestpe.2018.2812704

Cited by 53 publications

(22 citation statements)

References 38 publications

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“…C. System stability analysis Based on (3), (8) and (9), the open-loop and closed-loop transfer functions of the overall equivalent single-rate system can be derived as…”

Section: B Equivalent Single-rate Closed-loop Systemmentioning

confidence: 99%

“…ESONANT controllers (RSCs), which are based on internal model theory [1], can track sinusoidal references of arbitrary frequencies at both positive and negative sequences with zero steady-state error [2]. They have been applied with satisfactory results to various cases such as distributed renewable energy generation systems [3]- [9], active power filters [10]- [12], and motor drives [13]- [15], etc.…”

Section: Introductionmentioning

confidence: 99%

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Multirate Resonant Controllers for Grid-Connected Inverters With Harmonic Compensation Function

Xie

Zhao

et al. 2019

IEEE Trans. Ind. Electron.

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Resonant controller (RSC) is one of the most popular approaches for AC current/voltage control due to the high performance of zero steady-state tracking error. However, it suffers from heavy computational burden issue when multiple RSCs are demanded to control multiple harmonics. To alleviate this issue, a down-sampled multirate RSCs (MRRSCs) scheme is proposed for controlling of power inverters, e.g., grid-connected inverters and active power filters, etc. The proposed control scheme is composed of an inner control loop with a fast sampling rate, which is identical to the switching frequency, and an array of paralleled MRRSCs based external control loop with a reduced sampling rate. With the reduced sample rate, the MRRSCs can be executed alternatively in the dq-frame, such that the computational burden can be significantly reduced per cycle. Moreover, to reinforce the wide frequency adaptability of the MRRSC, its central resonant frequency is online updated according to the output of the phase-locked loop (PLL). In the paper, the equivalent single-rate closed-loop model of the overall system is developed, based on which the controller parameters are designed employing the Nyquist diagram and root locus. Finally, experiments are performed on a grid-connected inverter to validate the superiority of the proposed scheme.

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“…C. System stability analysis Based on (3), (8) and (9), the open-loop and closed-loop transfer functions of the overall equivalent single-rate system can be derived as…”

Section: B Equivalent Single-rate Closed-loop Systemmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Multirate Resonant Controllers for Grid-Connected Inverters With Harmonic Compensation Function

Xie

Zhao

et al. 2019

IEEE Trans. Ind. Electron.

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“…Equations (16) and (22) are the fundamental differential equations utilised to define the developed model in forms of five dependent parameters (i ds , i qs , i dr , i qr and ω r ) [1,4].…”

Section: Dynamic Modelling Of Immentioning

confidence: 99%

“…The structure and control of a NPC MLI are quite simple as compared to flying capacitor MLIs. Apart from this, a NPC MLI requires less numbers of voltage sensors as compared to flying capacitor MLIs [15, 16].…”

Section: Introductionmentioning

confidence: 99%

Multi‐pulse AC–DC converter fed SVM controlled NPC inverter based VCIMD

Kant

Singh

2018

IET Power Electronics

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A multi-pulse AC-DC converter fed space vector modulation (SVM) controlled neutral point clamped (NPC) inverter based vector control induction motor drive (VCIMD) is proposed here for medium power rating applications. To improve the power quality at supply side, a 12-pulse AC-DC converter is used and to meet the IEEE-519 standard, a high-pass filter is also used along with it. A three-level NPC inverter is utilised on the motor side to enhance the required performances of an induction motor drive (IMD). A modified SVM strategy is proposed to balance the capacitor voltages of the NPC inverter and to switch this inverter at very low switching frequency. The neutral point voltage balancing is achieved by the time adjustment between positive and negative small vectors. The model of proposed IMD is developed using the Simulink/MATLAB platform, and simulated response is validated with test results on a developed prototype in the laboratory to demonstrate its usefulness for medium power applications.

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“…RID-CONNECTED converters are becoming more and more popular nowadays due to the increasing role of renewable sources and distributed power generation systems [1]- [4]. The voltage source converter (VSC) is one of the most common adopted power electronic interfaces between distributed generation systems and the power grid.…”

Section: Introductionmentioning

confidence: 99%

A New Tuning Method of Multiresonant Current Controllers for Grid-Connected Voltage Source Converters

Xie

Zhao

et al. 2019

IEEE J. Emerg. Sel. Topics Power Electron.

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Resonant controllers (RSCs) are widely adopted for controlling power converters since they can track AC signals of both positive and negative sequences without steady-state error. However, the performance of RSCs has not been fully exploited due to the improper phase compensation angle and insufficient controller gain. In this paper, a novel controller parameters design method, which is based on the system error transfer function, is proposed to further explore the potential high performance of RSCs. Comparing with the conventional methods, more appropriate phase compensation angles can be obtained, which means that the stable region of the controller gain is extended. Since the proposed RSCs design method is able to maximize the controller gain, the controller sensitivity to system frequency variations can be decreased and the system response speed can be improved. The RSCs tuning procedure is given in detail, and comparative experiments between the proposed method and the conventional method are performed to validate the superiority of the proposed method.

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Triangle Carrier-Based DPWM for Three-Level NPC Inverters

Cited by 53 publications

References 38 publications

Multirate Resonant Controllers for Grid-Connected Inverters With Harmonic Compensation Function

Multirate Resonant Controllers for Grid-Connected Inverters With Harmonic Compensation Function

Multi‐pulse AC–DC converter fed SVM controlled NPC inverter based VCIMD

A New Tuning Method of Multiresonant Current Controllers for Grid-Connected Voltage Source Converters

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