Performance enhancement and comparison of discrete time current regulators for parallel active filters

Ozkaya, Hasan
Senturk, Osman Selcuk
Hava, Ahmet Masum
Discrete time linear and hysteresis current regulators (CR) for three-phase parallel active filters (PAF) are reviewed and evaluated. A novel discrete time hysteresis current regulation method with current oversampling and flexible PWM release capability, DHCR3, which has superior overall performance and simple implementation (no additional hardware) is proposed. Switching ripple filters (SRF) suitable for each CR type are designed. A DSP controlled PAF is designed and built for a three-phase 10 kW diode rectifier load. The CR and PAF performances are verified by means of theory, simulations, and experiments and strong correlation is obtained. The study shows that of various CRs, the synchronous frame resonant filter CR and DHCR3 with appropriate SRF types perform satisfactorily and the latter has much lower implementation complexity and reduced switching losses.


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Oezkaya, Hasan; Sentuerk, Osman Selcuk; Hava, Ahmet Masum (2007-05-05)
In this work discrete time current regulation methods for three-phase parallel active filters (PAF) are investigated. With emphasis on PAF applications, linear and hysteresis current regulation methods are studied and improvements on the discrete time implementation of the latter type without any additional analog hardware are provided. The dependency of the switching ripple filter (SRF) type on the PAF current regulator (CR) type is considered and design methods provided. A PAF is designed for a three-phas...
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Citation Formats
H. Ozkaya, O. S. Senturk, and A. M. Hava, “Performance enhancement and comparison of discrete time current regulators for parallel active filters,” 2007, Accessed: 00, 2020. [Online]. Available: