Enhancement of Power Quality in Domestic Loads Using Harmonic Filters

Sanjan, Pallerla; Gowtham, N.; Bhaskar, Mahajan Sagar; Subramaniam, Umashankar; Almakhles, Dhafer; Padmanaban, Sanjeevikumar; Yamini, N G

doi:10.1109/access.2020.3034734

Cited by 31 publications

(14 citation statements)

References 23 publications

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“…11 shows that there is one crossing with −180º, which must be counted if the gain is higher than 1 (higher than 0 dB). Applying (30) reveals that this crossing is at f = f s /3. As a result, using (29), the open-loop gain and the condition to achieve C − = 0 are…”

Section: Open-loop With One Pole At Z = −1: Active Damping With Camentioning

confidence: 94%

Control Design and Stability Analysis of Power Converters: The Discrete Generalized Bode Criterion

et al. 2021

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For the controller design and stability analysis of power electronic converters, the Bode stability criterion and its subsequent revisions are the most practical tools. However, even though the control of the power converter is usually implemented in a microprocessor, none of these methods is infallible when applied to a discrete system. This paper therefore proposes a new stability criterion, named the Discrete Generalized Bode Criterion (DGBC). This method is based on the Nyquist criterion but developed from the open-loop Bode diagram, evaluated also at 0 Hz and at the Nyquist frequency. The proposed criterion combines the advantages of the Nyquist and Bode criteria, since it is always applicable and provides an interesting and useful tool for the controller design process. The method is applied to design an active damping control of an inverter with LCL filter, showing how the proposed criterion accurately predicts stability, in contrast to the existing Bode criteria. The theoretical analysis is validated through experimental results performed with a three-phase inverter and an LCL filter. INDEX TERMS Active damping control, control design, frequency domain analysis, LC-filtered voltage source inverter (VSI), stability criteria.

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Section: Open-loop With One Pole At Z = −1: Active Damping With Camentioning

confidence: 94%

Control Design and Stability Analysis of Power Converters: The Discrete Generalized Bode Criterion

et al. 2021

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“…Reference [1] pin-points that the source of the harmonics in the power system is owing to the use of non-linear loads that include battery charging system, smart refrigerating and air-conditioning systems, computers, electric furnaces, and fluorescent or LED lighting systems. The current drawn by the non-linear loads or devices is non-linear which leads to poor power quality issues.…”

Section: Literature Reviewmentioning

confidence: 99%

“…The mathematical computation of output voltage and input current harmonics of a six-pulse rectifier is reported in [17] but they are not practically validated. The harmonic profile of various outputs of power converting systems is practically evaluated in [1,18].…”

Section: Literature Reviewmentioning

confidence: 99%

Power Quality Analysis of the Output Voltage of AC Voltage and Frequency Controllers Realized with Various Voltage Control Techniques

et al. 2021

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Single-phase and three-phase AC-AC converters are employed in variable speed drive, induction heating systems, and grid voltage compensation. They are direct frequency and voltage controllers having no intermediate power conversion stage. The frequency controllers govern the output frequency (low or high) in discrete steps as per the requirements. The voltage controllers only regulate the RMS value of the output voltage. The output voltage regulation is achieved on the basis of the various voltage control techniques such as phase-angle, on-off cycle, and pulse-width modulation (PWM) control. The power quality of the output voltage is directly linked with its control techniques. Voltage controllers implemented with a simple control technique have large harmonics in their output voltage. Different control techniques have various harmonics profiles in the spectrum of the output voltage. Traditionally, the evaluation of power quality concerns is based on the simulation platform. The validity of the simulated values depends on the selection of the period of a waveform. Any deficiency in the selection of the period leads to incorrect results. A mathematical analytical approach can tackle this issue. This becomes important to analytically analyze the harmonious contents generated by various switching control algorithms for the output voltage so that these results can be successfully used for power quality analysis and filtering of harmonics components through various harmonics suppression techniques. Therefore, this research is focused on the analytical computation of the harmonics coefficients in the output voltage realized through the various voltage and frequency control techniques. The mathematically computed results are validated with the simulation and experimental results.

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“…The consumer and the utility are paying heavily for these losses. The power quality issues are of serious concern and require a lot of focus and extensive work to improve [5]. The harmonic voltage compensation purposes have been shown in single-phase APF [6], [7] allowing loads to be supplied by a nearly sinusoidal voltage.…”

Section: Introductionmentioning

confidence: 99%

Experimental Investigations on Particle Swarm Optimization Based Control Algorithm for Shunt Active Power Filter to Enhance Electric Power Quality

et al. 2022

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Quality power is a very important factor for the proper functioning of appliances and can be enhanced using shunt active power filters (SAPF). This work demonstrates the hardware implementation of synchronous reference frame (SRF) theory based SAPF. This paper presents the technique of particle swarm optimization (PSO) to tune the gain values of the SAPF PI controller to control the voltage of the DClink and enhance its dynamic efficiency. The estimation of gain values of PI controllers using conventional methods does not yield the expected outcomes under varying load conditions. The PSO tuned controller provides better results as compared to traditional tuning methods. The switching scheme is implemented using hysteresis controller to control the SAPF. The main objectives of this approach are to extract the compensating currents and cancel out the harmonics produced by balanced, unbalanced and nonlinear loads. The planned scheme is designed and implemented in MATLAB/Simulink and then its performance on a developed laboratory prototype is validated experimentally.INDEX TERMS Harmonic mitigation, hysteresis current controller, particle swarm optimization, PI controller, power quality shunt active power filter, synchronous reference frame theory. NOMENCLATURE ADALINE Adaptive Linear Neuron. ADC Analog to Digital Converter. ANN Artificial Neural Network. CDC DC-link Capacitor. C f Ripple Filter Capacitor. d n Switching Function. DAC Digital to Analog Converter. DSTATCOM Distribution Static Compensator. e Error. FLC Fuzzy Logic Control. FPGA Field Programmable Gate Array. g n Switching Function i c Compensating Current.

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Enhancement of Power Quality in Domestic Loads Using Harmonic Filters

Cited by 31 publications

References 23 publications

Control Design and Stability Analysis of Power Converters: The Discrete Generalized Bode Criterion

Control Design and Stability Analysis of Power Converters: The Discrete Generalized Bode Criterion

Power Quality Analysis of the Output Voltage of AC Voltage and Frequency Controllers Realized with Various Voltage Control Techniques

Experimental Investigations on Particle Swarm Optimization Based Control Algorithm for Shunt Active Power Filter to Enhance Electric Power Quality

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