Three-phase, two-switch PFC rectifier fed three-level VSI based FOC of induction motor drive

Bhuvaneswari, G. ; Singh, Bhim ; Madishetti, Sandeep (2012) Three-phase, two-switch PFC rectifier fed three-level VSI based FOC of induction motor drive In: 2012 IEEE Fifth Power India Conference, 19-22 Dec. 2012, Murthal, India.

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This paper presents a Scott transformer based three-phase, two-switch PFC (Power Factor Correction) boost rectifier for improving the power quality in a three-level diode clamped inverter (DCI) feeding indirect rotor field oriented control (FOC) based induction motor drive (IMD). Sinusoidal unity power factor source current and dc-link voltage regulation are achieved in the proposed rectifier only with two-switches. The three-level DCI is supplied by a split dc-link obtained from a Scott connected transformer feeding a rectifier. It is shown that a three-level DCI achieves reduced stator current with lower voltage harmonic content even at a lower switching frequency as compared to a two-level inverter. This results in reduction of voltage stress on motor windings for the same amount of torque ripple when indirect rotor FOC algorithm is implemented for the IMD. A MATLAB based simulation model of proposed PFC rectifier is developed for validating the design and to verify that the power quality issues in three-level DCI fed IMD are adequately addressed. The performance of the system is studied and compared with a conventional diode rectifier fed vector controlled IMD for different operating conditions of the drive.

Item Type:Conference or Workshop Item (Paper)
Source:Copyright of this article belongs to Institute of Electrical and Electronics Engineers.
Keywords:Three-Phase Rectifier; AC-DC Converter; Improved Power Quality Converter; Indirect Vector Control; Induction Motor; Power Factor Correction (PFC); Power Quality Improvement; Rotor Field Oriented Control (FOC); Scott Transformer; Split DC Bus Voltage
ID Code:109616
Deposited On:04 Aug 2017 11:01
Last Modified:04 Aug 2017 11:01

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