Hardware implementation of a novel, reduced rating active filter for 3-phase, 4-wire loads

Kamath, G.R.; Mohan, Ned; Albertson, V. D.

doi:10.1109/apec.1995.469060

Cited by 32 publications

(15 citation statements)

References 6 publications

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“…Many approaches such as notch filter [5], instantaneous reactive power theory [6], synchronous detection method [7], synchronous d-q frame method [8], flux based control [9], closed-loop PI controllers [8][9], and sliding mode control [10][11] are used to improve the performance of the APFs. These approaches have become feasible because of the advent of new microelectronic devices such as Digital Signal Processors (DSPs) and availability of fast and accurate Hall effect sensors.…”

Section: Introductionmentioning

confidence: 99%

Current error space phasor based hysteresis controller for two-level and three-level converters used in Shunt Active Power Filters

Chauhan

Tekwani

2013

IECON 2013 - 39th Annual Conference of the IEEE Industrial Electronics Society

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Shunt Active Power Filters (SAPF) are commonly employed to reduce current harmonics, which are injected in the utility by nonlinear loads. This paper presents performance of current error space phasor based hysteresis controller for threelevel Neutral Point Clamped (NPC) and Flying Capacitor (FC) converters used in SAPF. Operation of two-level converter based SAPF is also demonstrated in this paper with the proposed controller. The proposed controller is self-adaptive in nature and does not require any particular calculation of Point of Common Coupling (PCC) voltage vector (E) because of proper sector change detection logic used. The proposed current controller overcomes inherent problem of random voltage vector switching encountered in conventional hysteresis current controller based SAPFs. It allows switching of only adjacent voltage vectors for position of PCC voltage vector in a given sector of voltage space phasor of SAPF. Region detection logic causes switching of SAPF voltage vector which keeps the current error well within the prescribed hexagonal boundary. The SAPF based on the proposed controller provides adequate compensation for removal of harmonics produced by nonlinear loads. Detailed theoretical analysis and simulation studies are presented in the paper and the claimed performance of the proposed controller is evident from the simulation results provided in the paper. This paper addresses issues like dc-link capacitor voltage unbalance for NPC and clamping capacitor voltage unbalance for Flying Capacitor based SAPF and also provides solution. The proposed controller can be easily extended for any multi-level converter topology used for SAPFs.

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Section: Introductionmentioning

confidence: 99%

Current error space phasor based hysteresis controller for two-level and three-level converters used in Shunt Active Power Filters

Chauhan

Tekwani

2013

IECON 2013 - 39th Annual Conference of the IEEE Industrial Electronics Society

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“…To improve the quality of power supply three phase three wire (3P3W) DSTATCOM has been proposed. There are various topologies reported in the literature for three-phase four-wire system [4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20][21] such as a three single voltage source converter, split capacitor voltage source converter and four leg voltage source converter. The limitations of these control techniques are increase in KV A rating of the inverter and unequal voltages across the capacitor.…”

Section: Introductionmentioning

confidence: 99%

An efficient control algorithm based DSTATCOM for power conditioning

Mangaraj

Panda

2015

2015 International Conference on Industrial Instrumentation and Control (ICIC)

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This paper presents the modelling and implementation of a three-phase DST ATCOM (Distribution Static Compensator) using an efficient control algorithm for power conditioning. This is one of an effective way for harmonic suppression, load balancing and reactive power compensation at distorted PCC (Point of Common Coupling) voltages under nonlinear loads. It is hoped at providing a broad perspective on the status of DSTATCOM control methods to researchers and application engineers dealing with harmonic cancellation issues. The proposed scheme consists of a zigzag transformer, double tuned filter, rectifiers, voltage source converter of the DST ATCOM. A fuzzy logic controller & traditional PI controller are used to control the neutral current & dc link voltage under both balanced & unbalanced loading conditions. Simulation studies are showing the better performance of three-phase DSTATCOM using MAT LAB SIMULINK & power system toolboxes.

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“…This is a low-cost, high-reliability, and simplified method. A hybrid scheme composed of a single-phase inverter and a zigzag transformer was presented in [6] and [7] to reduce the size and weight of the zigzag transformer, which is a complex method for the additional single-phase inverter; 2) the neutral point connects to the midpoint of two dc-linked capacitors, thereby becoming the fourth wire of the converter [8]- [10]. The neutral point of the split dc capacitors can be directly utilized as the ground return.…”

Section: Introductionmentioning

confidence: 99%

Selective Harmonic Elimination PWM Control Scheme on a Three-Phase Four-Leg Voltage Source Inverter

Zhang

Yan

2009

IEEE Trans. Power Electron.

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A selective harmonic elimination (SHE) control strategy on a three-phase four-leg inverter is reported in this paper. The control signals of the four legs are calculated as follows: 1) control signals of three legs are mathematically expressed using Fourierbased equations on line-to-line basis as conventional SHE technology, which eliminates lower order nontriplen harmonics, and 2) the fourth leg produces the harmonics that are equal to the lower triplen harmonics produced by the other legs. The inverter has almost symmetric three-phase output voltage with unbalanced load because the fourth leg provides a low-impedance path for the triplen harmonics. The switching-to-fundamental frequency ratio is only 13 and 27 (per unit) p.u. for the three legs and the fourth leg in the proposed prototype, which is with the total harmonic distortion of output voltage lower than 4%. Selected solutions for the switching angles are presented and verified by simulation and experimentation in order to confirm the effectiveness of the proposed scheme.Index Terms-Selective harmonic elimination, three-phase fourleg inverter.

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Hardware implementation of a novel, reduced rating active filter for 3-phase, 4-wire loads

Cited by 32 publications

References 6 publications

Current error space phasor based hysteresis controller for two-level and three-level converters used in Shunt Active Power Filters

Current error space phasor based hysteresis controller for two-level and three-level converters used in Shunt Active Power Filters

An efficient control algorithm based DSTATCOM for power conditioning

Selective Harmonic Elimination PWM Control Scheme on a Three-Phase Four-Leg Voltage Source Inverter

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