Modeling and control of DSTATCOM using adaptive hysteresis band current controller in three-phase four-wire distribution systems

In this paper a three phase four wire Distribution Static Compensator (DSTATCOM) is proposed for power quality improvement. DSTATCOM is controlled to compensate reactive power, harmonic current, neutral current and unbalances in the load. The control algorithm extracts reference currents and generates gate pulses for IGBT switches by PWM technique. An adaptive hysteresis band current controller is proposed to control the hysteresis bandwidth according to the modulation frequency, supply voltage, DC capacitor voltage and slope of the reference compensator current wave. The performance of three phase four wire system with DSTATCOM is validated for harmonic elimination and balancing of loads by using simulation models in MATLAB /SIMULINK.

[1]  Shahrokh Saadate,et al.  New control approach for four-wire active power filter based on the use of synchronous reference frame , 2005 .

[2]  Anup Kumar Panda,et al.  Real-time implementation of adaptive fuzzy hysteresis-band current control technique for shunt active power filter , 2012 .

[3]  Murat Kale,et al.  An adaptive hysteresis band current controller for shunt active power filter , 2005 .

[4]  Bhavesh R. Bhalja,et al.  Comparison of control strategies for DSTATCOM in three-phase, four-wire distribution system for power quality improvement under various source voltage and load conditions , 2012 .

[5]  Mehmet Uçar,et al.  Control of a 3-phase 4-leg active power filter under non-ideal mains voltage condition , 2008 .

[6]  Bhim Singh,et al.  Implementation of Neural Network Controlled Three-Leg VSC and a Transformer as Three-Phase Four-Wire DSTATCOM , 2009, 2009 IEEE Industry Applications Society Annual Meeting.

[7]  Pramod Agarwal,et al.  Neutral current compensation in three-phase, four-wire systems: A review , 2012 .

[8]  Bhim Singh,et al.  Implementation of Neural-Network-Controlled Three-Leg VSC and a Transformer as Three-Phase Four-Wire DSTATCOM , 2011 .

[9]  B. Singh,et al.  A Review of Compensating Type Custom Power Devices for Power Quality Improvement , 2008, 2008 Joint International Conference on Power System Technology and IEEE Power India Conference.

[10]  Bhim Singh,et al.  New control approach for capacitor supported DSTATCOM in three-phase four wire distribution system under non-ideal supply voltage conditions based on synchronous reference frame theory , 2011 .

[11]  A. Chandra,et al.  An independent control approach for three-phase four-wire shunt active filter based on three H-bridge topology under unbalanced load conditions , 2008, 2008 IEEE Power Electronics Specialists Conference.

[12]  Kamal Al-Haddad,et al.  A review of active filters for power quality improvement , 1999, IEEE Trans. Ind. Electron..

[13]  B. Singh,et al.  Modeling, Design and Analysis of Different Controllers for DSTATCOM , 2008, 2008 Joint International Conference on Power System Technology and IEEE Power India Conference.