A Novel Active Interphase Transformer Scheme to Achieve Three-Phase Line Current Balance for 24-Pulse Converter

Young, Cynthia; Chen, Ming‐Hui; Lai, Chien-Hsiang; Shih, Der-Chun

doi:10.1109/tpel.2011.2169684

Cited by 36 publications

(10 citation statements)

References 9 publications

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“…In [8] and [17], twelve 3 L-NPC PEBBs are combined too, but using six Inter-Phase Transformers (IPTs) [18]. In [17], the output transformer is connected in open-end configuration and the VA rating of the intermediate magnetic elements that are needed to combine the PEBBs is reduced compared to the topology presented in [8].…”

Section: Ip-zsbt Magnetic Configuration For Parallelization-serializamentioning

confidence: 99%

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IP-ZSBT Magnetic Configuration for Parallelization–Serialization of Three-Phase High Power Converters

Laka

Barrena

Chivite-Zabalza

et al. 2014

IEEE Trans. Energy Convers.

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In this paper, a novel magnetic configuration inter phase zero sequence blocking transformer (IP-ZSBT) is presented. The IP-ZSBT is suitable for the parallelization of two three-phase converters, avoiding the circulation of any zero sequence current. The configuration assures an equated current sharing between the converters, providing the functionality of an Inter-Phase Transformer. In addition, it imposes a high impedance for zero sequence currents, providing also the functionality of a zero sequence blocking transformer. A simulation of the proposed configuration has been carried out by using the Saber simulation tool and it has been validated by experimental results.Index Terms-Inter-phase transformer (IPT), voltage source converter (VSC), zero sequence blocking transformer (ZSBT).

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Section: Ip-zsbt Magnetic Configuration For Parallelization-serializamentioning

confidence: 99%

“…The IPTs allow to connect converters in parallel and increase the converter output power [27].By using the IPT, the current is equally shared between the parallelized legs [8]. Fig.…”

Section: Inter-phase Transformermentioning

confidence: 99%

IP-ZSBT Magnetic Configuration for Parallelization–Serialization of Three-Phase High Power Converters

Laka

Barrena

Chivite-Zabalza

et al. 2014

IEEE Trans. Energy Convers.

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“…However, with the increasing number of output windings in a phase-shift transformer, the phase-shifting transformer structure becomes complicated and the utilization ratio of turn coils is depressed, causing difficulties in design and manufacture. Because the 12-pulser rectifier is the simplest and the most popular MPR, several circuit topologies with active or passive auxiliary circuits are proposed to install at the dc or ac side of 12-pulse rectifier, which can effectively lower the input line current harmonics [12][13][14][15][16][17][18][19][20][21][22]. The harmonic reduction at the 2 of 18 dc-side is carried out by injecting current through an interphase reactor (IPR) [12].…”

Section: Introductionmentioning

confidence: 99%

A 36-Pulse Diode Rectifier with an Unconventional Interphase Reactor

et al. 2019

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This paper proposes a simple 36-pulse diode rectifier with an unconventional interphase reactor (IPR) and single-phase full-wave rectifier (SFR). The primary winding of the unconventional IPR is double tapped and the secondary winding is connected with SFR. The operation mode of the unconventional IPR is analyzed, and the optimal tap ratio and turn ratio of the unconventional IPR are designed from both viewpoints of input line current and load voltage. With the optimal parameters of the unconventional IPR, the proposed rectifier extends the conventional 24-pulse rectifier operation to 36-pulse operation and draws near sinusoidal input line currents, the total harmonic distortion (THD) of which is about 5.035%. The kVA rating of the unconventional IPR is about 2.6% of the output power. Compared with the conventional 36-pulse rectifier with triple-tapped IPR, the proposed 36-pulse rectifier is easy and simple to implement instead of using control circuits. Experiment results are provided to verify the theoretical analysis.

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“…Therefore, researchers have explored a variety of methods to reduce the input line current distortion of diode recti ers in recent decades . Compared with other harmonic reduction methods, because of the small kilo-Volt Ampere (kVA) rating of auxiliary current injection circuit and excellent harmonic reduction ability, the method of active harmonic reduction at dc side is suitable for high power applications and has drawn more and more attention [16][17][18][19][20][21][22][23][24][25][26].…”

Section: Introductionmentioning

confidence: 99%

“…The proposed AIPT scheme consists of three IPTs and a current-controlled inverter with rating required to be only 1.16% of the system power rating. In [21], a double-star diode recti er with an auxiliary PWM recti er is also presented. It draws near sinusoidal utility line currents with less than 5% THD.…”

Section: Introductionmentioning

confidence: 99%

Effects of leakage inductance on the input current of double star diode rectifier with active inter-phase reactor

Wang

Yang

2017

Scientia Iranica

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KEYWORDSDouble-star diode recti er; Leakage inductance; Input current THD; Active inter-phase reactor; The input current lag angle.Abstract. An Active Inter-Phase Reactor (AIPR) is often employed to inject triangle current to improve the input current quality of double-star diode recti er. Due to the existing leakage inductance of transformer, the input current harmonics suppression ability of the injected triangle current would be weakened. In this paper, the current commutation process of the double-star diode recti er with AIPR is analyzed initially. Then, according to the relation between the input current and output current of the double-star transformer, the relation between the leakage inductance and the input line current of double-star diode recti er with AIPR is established. Such factors like the input current THD, the input current lag angle, and power factor of the double-star diode recti er with AIPR as well as their relations with the leakage inductance are also obtained. The theoretical analysis demonstrates that leakage inductance increases the input current THD and lag angle. It indicates that leakage inductance decreases the displacement factor and power factor. To ensure the input current THD is less than 5% and the power factor is more than 0.998, the leakage inductance factor, K LS , should be less than 0.22. Simulation results verify the theoretical analysis.

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A Novel Active Interphase Transformer Scheme to Achieve Three-Phase Line Current Balance for 24-Pulse Converter

Cited by 36 publications

References 9 publications

IP-ZSBT Magnetic Configuration for Parallelization–Serialization of Three-Phase High Power Converters

IP-ZSBT Magnetic Configuration for Parallelization–Serialization of Three-Phase High Power Converters

A 36-Pulse Diode Rectifier with an Unconventional Interphase Reactor

Effects of leakage inductance on the input current of double star diode rectifier with active inter-phase reactor

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