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Proposed Unbalanced Control Strategy for Thyristor Controlled LC-Coupling Hybrid Active Power Filter (TCLC-HAPF)

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Adaptive Hybrid Active Power Filters

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Abstract

This chapter proposes a control strategy for a three-phase three-wire thyristor controlled LC-coupling hybrid active power filter (TCLC-HAPF), which can balance active power and compensate reactive power and harmonic current under unbalanced loading. Compared with TCLC-HAPF with conventional control strategy, active power filters (APFs) and hybrid active power filters (HAPFs), which either fail to perform satisfactory compensation or require high rating active inverter part for unbalanced compensation, a control strategy was proposed for TCLC-HAPF to operate with a small rating active inverter part for a variety of loads with satisfactory performance. The control idea is to provide different firing angles for each phase of the thyristor controlled LC-coupling part (TCLC) to balance active power and compensate reactive power, while the active inverter part aims to compensate harmonic current. Firstly, the required different TCLC impedances are deduced. Then, independent firing angles referenced to the phase angle of voltage across TCLC are calculated. After angle transformations, final firing angles referenced to phase angle of load voltage are obtained. In this chapter, a novel controller for TCLC-HAPF under unbalanced loading is proposed. Simulation and experimental results are provided to verify the effectiveness of the proposed controller in comparison with a state-of-the-art controller.

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Authors and Affiliations

  1. Department of Electrical and Computer Engineering, Faculty of Science and Technology, University of Macau, Macau, China

    Lei Wang & Man-Chung Wong

  2. State Key Laboratory of Analog and Mixed Signal VLSI, University of Macau, Macau, China

    Chi-Seng Lam

Authors
  1. Lei Wang
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  2. Man-Chung Wong
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  3. Chi-Seng Lam
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Correspondence to Lei Wang .

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Wang, L., Wong, MC., Lam, CS. (2019). Proposed Unbalanced Control Strategy for Thyristor Controlled LC-Coupling Hybrid Active Power Filter (TCLC-HAPF). In: Adaptive Hybrid Active Power Filters. Power Systems. Springer, Singapore. https://doi.org/10.1007/978-981-10-8827-8_5

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  • DOI: https://doi.org/10.1007/978-981-10-8827-8_5

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  • Publisher Name: Springer, Singapore

  • Print ISBN: 978-981-10-8826-1

  • Online ISBN: 978-981-10-8827-8

  • eBook Packages: EnergyEnergy (R0)

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