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Reducing output voltage THD of a three-phase inverter with non-linear load using disturbance observer

Valizade Alavi, S ; Sharif University of Technology | 2017

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  1. Type of Document: Article
  2. DOI: 10.1109/PEDSTC.2017.7910364
  3. Publisher: Institute of Electrical and Electronics Engineers Inc , 2017
  4. Abstract:
  5. Non-linear loads such as rectifiers are growing in industry. Three phase inverter with non-linear load can lead to highly distorted output voltage. This paper proposes a method for reducing voltage THD in three phase inverters with non-linear load. The proposed method considers the load current as a disturbance and provide a control strategy to reject it using the disturbance observer method. This method doesn't need any additional sensors or hardware and is implemented digitally in controller. Simulation results show that the presented method will reduce the total harmonic distortion of the output voltage. © 2017 IEEE
  6. Keywords:
  7. Disturbance observer ; Non-linear load ; Three phase inverter ; Harmonic distortion ; Power electronics ; Rectifying circuits ; Wave filters ; Control strategies ; Load currents ; Nonlinear load ; Output voltages ; Three-phase inverter ; Total harmonic distortion (THD) ; Electric inverters
  8. Source: 8th Power Electronics, Drive Systems and Technologies Conference, PEDSTC 2017, 14 February 2017 through 16 February 2017 ; 2017 , Pages 431-436 ; 9781509057665 (ISBN)
  9. URL: https://ieeexplore.ieee.org/document/7910364