Exploring the Potential of EV Motor Winding in LCL Filter Design for On-Board Chargers
Исследование потенциала обмотки двигателя электромобиля для проектирования LCL-фильтра бортовых зарядных устройств
2023-09-04
SCID: 54.1/29mjhp59
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EV motor stator windingHardware-in-the-loop testingLCL filteractive front-end rectifieron-board charger
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Abstract (AI)
This study proposes utilizing the stator winding of an electric vehicle (EV) motor as an input filter for an active front-end rectifier stage of on-board charger, forming an LCL filter. However, the high value of grid-side filter inductance due to the EV motor winding may constrain the LCL filter design. A small signal model is developed to investigate system dynamics, and a control structure is designed for an integrated LCL filtered on-board charger (IOBC). Results show that integrated LCL filter performs similarly to typical LCL filter, with the added benefits of reduced weight, volume, and cost of OBC. The effectiveness of the designed control structure is validated experimentally in real-time using Hardware-in-the-loop testing.
Key Findings
1
A dedicated control structure is designed for the integrated LCL-filtered on-board charger to manage its dynamics.
2
The EV motor’s stator winding can serve as the grid-side inductive element of an LCL input filter for an on-board charger’s active front-end rectifier.
3
The high inductance of the motor winding may constrain feasible LCL filter design and requires system-dynamics analysis using a small-signal model.
4
The integrated LCL filter achieves performance similar to a conventional LCL filter while reducing the charger’s weight, volume, and cost.
5
The proposed control structure is experimentally validated in real time using hardware-in-the-loop testing.
Research Object
The stator winding of an electric vehicle motor integrated as the grid-side/input inductive element of an LCL-filtered on-board charger with an active front-end rectifier
Research Subject
The feasibility, system dynamics, filter-design constraints, and control performance of using the EV motor winding as an integrated LCL filter in an on-board charger
Publication Details
Publication Date
2023-09-04
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