Dual Passive Harmonic Reduction at DC Link of the Double-Star Uncontrolled Rectifier

Meng, Fanwen; Xu, Xianglian; Gao, Lei; Man, Zhongcheng; Cai, Xinning

doi:10.1109/tie.2018.2844840

Cited by 30 publications

(21 citation statements)

References 10 publications

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“…In this paper, the flux density is taken as 0.8 T, and the current density is considered as 2.3 A/mm 2 . Noted that to minimize the current THD, it has been demonstrated in [35] and [38] that the secondary to primary turn ratio must be 10.74 and 5.06, respectively, but in the proposed IPT, this turn ratio is 21.48, which is in a good agreement with the results presented in Fig. 6.…”

Section: B Novel Pulse Tripling Circuit (Ptc)supporting

confidence: 87%

“…However, the rating of the multitapped IPT used in [35], is 2.68% and that of the suggested IPT used in the proposed PTC is 1.57%. Also, the rating of this 36-PR based on star autotransformer [35] and star transformer [38] was approximately 48% and more than 100% of the load power, respectively. But, the proposed 36-PR, which is based on polygon autotransformer of this paper, has the rating of 24.16% of the load rating, which is 10.78% less than the one given in [35].…”

Section: B Novel Pulse Tripling Circuit (Ptc)mentioning

confidence: 99%

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Pulse Tripling Circuit and Twelve Pulse Rectifier Combination for Sinusoidal Input Current

et al. 2021

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In this paper, a novel pulse tripling circuit (PTC) is suggested, to upgrade a polygon autotransformer 12-pulse rectifier (12-PR) to a 36-pulse rectifier (36-PR) with a low power rating. The kVA rating of the proposed PTC is lower compared to the conventional one (about 1.57% of load power). Simulation and experimental test results show that the total harmonic distortion (THD) of the input current of the suggested 36-PR is less than 3%, which meets the IEEE 519 requirements. Also, it is shown that in comparison with other multi-pulse rectifiers (MPR), it is cost-effective, its power factor is near unity and its rating is about 24% of the load rating. Therefore, the proposed 36-PR can be considered as a practical solution for industrial applications.

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Section: B Novel Pulse Tripling Circuit (Ptc)supporting

confidence: 87%

Section: B Novel Pulse Tripling Circuit (Ptc)mentioning

confidence: 99%

Pulse Tripling Circuit and Twelve Pulse Rectifier Combination for Sinusoidal Input Current

et al. 2021

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“…The THDi of a signal is a measurement of the harmonic distortion present and defined as the ratio of the sum of the powers of all harmonic components to the power of the fundamental frequency [31], which is expressed as follows:…”

Section: Thdi Extractionmentioning

confidence: 99%

K-Means Clustering-Based Electrical Equipment Identification for Smart Building Application

Zhang

Deng

2020

Information

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With the development and popular application of Building Internet of Things (BIoT) systems, numerous types of equipment are connected, and a large volume of equipment data is collected. For convenient equipment management, the equipment should be identified and labeled. Traditionally, this process is performed manually, which not only is time consuming but also causes unavoidable omissions. In this paper, we propose a k-means clustering-based electrical equipment identification toward smart building application that can automatically identify the unknown equipment connected to BIoT systems. First, load characteristics are analyzed and electrical features for equipment identification are extracted from the collected data. Second, k-means clustering is used twice to construct the identification model. Preliminary clustering adopts traditional k-means algorithm to the total harmonic current distortion data and separates equipment data into two to three clusters on the basis of their electrical characteristics. Later clustering uses an improved k-means algorithm, which weighs Euclidean distance and uses the elbow method to determine the number of clusters and analyze the results of preliminary clustering. Then, the equipment identification model is constructed by selecting the cluster centroid vector and distance threshold. Finally, identification results are obtained online on the basis of the model outputs by using the newly collected data. Successful applications to BIoT system verify the validity of the proposed identification method.

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“…According to lots of efforts have been made to improve the power quality in MPR [4]- [16], increasing the pulse number of MPR is the common and effective way which can be divided into three types of method. The first method is to increase the pulse number of phase-shift transformer to improve the harmonic reduction ability [4]- [6].…”

Section: Introductionmentioning

confidence: 99%

“…The third method is installing auxiliary circuit with the active or passive devices at dc or ac side of MPR [10]- [16]. Actually, the active auxiliary circuit controls the currents through the active devices to be a particular waveform and modulates the output currents of the three-phase diode-bridge rectifiers to meet some conditions.…”

Section: Introductionmentioning

confidence: 99%

Optimum Design of 48-Pulse Rectifier Using Unconventional Interphase Reactor

Lian

Yang

2019

IEEE Access

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In order to simultaneously reduce the harmonics of input line current and ripple of load voltage in multipulse rectifier, this paper proposes a 48-pulse rectifier using the unconventional interphase reactor (IPR) with an auxiliary single-phase diode-bridge rectifier at the dc link. The primary winding of the unconventional IPR is triple-tapped, and the secondary winding is connected with a single-phase diodebridge rectifier. The operation mode of the unconventional IPR is analyzed, and the optimal tap ratio and turn ratio are designed. With the optimal parameters of the IPR and the optimal conduction time sequence of power devices, the proposed rectifier extends the conventional 36-pulse rectifier operation to a 48-pulse operation and draws near sinusoidal input line currents, the total harmonic distortion (THD) of which is about 3.81%. The proposed 48-pulse rectifier is easy and simple to implement, and it is more suitable for high-voltage and large-current application. Some simulation and experiments are provided to validate the theoretical analysis. INDEX TERMS Multipulse rectifier (MPR), interphase reactor (IPR), single-phase diode-bridge rectifier, harmonic reduction. II. PROPOSED RECTIFIER WITH UNCONVENTIONAL IPR AND ITS OPERATION MODE A. CIRCUIT CONFIGURATION

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Dual Passive Harmonic Reduction at DC Link of the Double-Star Uncontrolled Rectifier

Cited by 30 publications

References 10 publications

Pulse Tripling Circuit and Twelve Pulse Rectifier Combination for Sinusoidal Input Current

Pulse Tripling Circuit and Twelve Pulse Rectifier Combination for Sinusoidal Input Current

K-Means Clustering-Based Electrical Equipment Identification for Smart Building Application

Optimum Design of 48-Pulse Rectifier Using Unconventional Interphase Reactor

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