Open-End Windings Induction Motor Drive With Floating Capacitor Bridge at Variable DC-Link Voltage

The open-end winding configuration allows feeding an electric motor from two sides. If one of them is connected to an inverter closed on a floating capacitor and operates as a power conditioning system, it is possible to obtain several benefits over the traditional configuration, such as an increase in the constant-power speed range. However, the additional converter causes switching losses that reduce the total efficiency of the drive. In this paper, it is shown how to improve the efficiency of an induction motor drive with open-end windings by controlling the dc-link voltage of the floating bridge depending on the operating conditions. The set-point of the secondary dc link is not calculated as an explicit function of the motor speed, which could depend on many machine parameters, but it is generated by a robust closed-loop control that uses the actual motor state. The variable dc link allows improving the overall efficiency of the drive mainly around the base speed at high values of the torque. Experimental results are shown to confirm the effectiveness of the developed configuration.

[1]  Luca Zarri,et al.  Open-ended induction motor drive with a floating capacitor bridge at variable DC link voltage , 2017, 2017 IEEE Energy Conversion Congress and Exposition (ECCE).

[2]  David G. Dorrell,et al.  Automotive Electric Propulsion Systems With Reduced or No Permanent Magnets: An Overview , 2014, IEEE Transactions on Industrial Electronics.

[3]  C. Chapelsky,et al.  A Method for Supply Voltage Boosting in an Open-Ended Induction Machine Using a Dual Inverter System With a Floating Capacitor Bridge , 2013, IEEE Transactions on Power Electronics.

[4]  K. Gopakumar,et al.  Multilevel Dodecagonal Voltage Space Vector Structure Generation for Open-End Winding IM Using a Single DC Source , 2016, IEEE Transactions on Industrial Electronics.

[5]  G. Scelba,et al.  A new approach to improve the current harmonic content on open-end winding AC motors supplied by multi-level inverters , 2015, 2015 IEEE Energy Conversion Congress and Exposition (ECCE).

[6]  Kwanghee Nam,et al.  Dual-inverter control strategy for high-speed operation of EV induction motors , 2004, IEEE Transactions on Industrial Electronics.

[7]  John Salmon,et al.  High-Efficiency Operation of an Open-Ended Winding Induction Motor Using Constant Power Factor Control , 2018, IEEE Transactions on Power Electronics.

[8]  John Salmon,et al.  Wide speed range operation of PMSM using an open winding and a dual inverter drive with a floating bridge , 2013, 2013 IEEE Energy Conversion Congress and Exposition.

[9]  Pat Wheeler,et al.  An Active Modulation Scheme to Boost Voltage Utilization of the Dual Converter With a Floating Bridge , 2019, IEEE Transactions on Industrial Electronics.

[10]  J. Salmon,et al.  PWM control of a dual inverter drive using an open-ended winding induction motor , 2013, 2013 Twenty-Eighth Annual IEEE Applied Power Electronics Conference and Exposition (APEC).

[11]  Jung-Ik Ha,et al.  Power enhancement of dual inverter for open-end permanent magnet synchronous motor , 2013, 2013 Twenty-Eighth Annual IEEE Applied Power Electronics Conference and Exposition (APEC).

[12]  Joon Sung Park,et al.  Dual Inverter Strategy for High Speed Operation of HEV Permanent Magnet Synchronous Motor , 2006, Conference Record of the 2006 IEEE Industry Applications Conference Forty-First IAS Annual Meeting.

[13]  Luca Zarri,et al.  Control Scheme for Open-Ended Induction Motor Drives With a Floating Capacitor Bridge Over a Wide Speed Range , 2017, IEEE Transactions on Industry Applications.

[14]  V. T. Ranganathan,et al.  Sensorless field oriented control for double inverter fed wound rotor induction motor drive , 2002, IEEE 2002 28th Annual Conference of the Industrial Electronics Society. IECON 02.

[15]  Takao Kawabata,et al.  Vector-controlled double-inverter-fed wound-rotor induction motor suitable for high-power drives , 1999 .

[16]  D. Casadei,et al.  Control of an open-ended induction machine using a dual inverter system with a floating capacitor bridge , 2015, 2015 IEEE Energy Conversion Congress and Exposition (ECCE).

[17]  K. Gopakumar,et al.  Low-Order Harmonic Suppression for Open-End Winding IM With Dodecagonal Space Vector Using a Single DC-Link Supply , 2015, IEEE Transactions on Industrial Electronics.

[18]  Keyu Chen,et al.  Minimum Copper Loss and Power Distribution Control Strategies of Double-Inverter-Fed Wound-Rotor Induction Machines Using Energetic Macroscopic Representation , 2010, IEEE Transactions on Energy Conversion.

[19]  Jung-Ik Ha,et al.  Single external source control of doubly-fed induction machine using dual inverter , 2013, 2013 IEEE Energy Conversion Congress and Exposition.

[20]  K. Gopakumar,et al.  A Three-Level Dodecagonal Space Vector-Based Harmonic Suppression Scheme for Open-End Winding IM Drives With Single-DC Supply , 2016, IEEE Transactions on Industrial Electronics.

[21]  Chintan Patel,et al.  A Multilevel Converter With a Floating Bridge for Open-End Winding Motor Drive Applications , 2016, IEEE Transactions on Industrial Electronics.

[22]  Demba Diallo,et al.  Electric Motor Drive Selection Issues for HEV Propulsion Systems: A Comparative Study , 2005, IEEE Transactions on Vehicular Technology.