High speed control of motor current in a distributed inverter system

US12214696B1 · kind B1 · utility

Assignee

• VOLVO CAR CORPORATION · SE

Inventors

• Samuel Sjöstrand · Gothenburg, SE
• Katriine Koit · Gothenburg, SE
• Aditya Pratap Singh · Gothenburg, SE
• Torbjörn Thiringer · Gothenburg, SE
• Markus Ekström · Gothenburg, SE

Key dates

• Filing date: Jul 17, 2023
• Grant date: Feb 4, 2025
• Expiry date: Jul 17, 2043

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B60L2240/549
• WIPO field: Transport
• WIPO sector: Mechanical engineering

Abstract

Systems, devices, computer-implemented methods, and/or computer program products that can facilitate optimized control of an electric motor of an electric vehicle using a smartcell battery system are addressed. In an example, the system uses a central controller that wirelessly communicates with local controllers connected to clusters of battery cells configured to generate a three-phase current output to control the motor torque. The central controller and the local controllers perform a main control loop to control the three-phase current output with an update frequency of about 1 kHz. A local control loop with an update frequency of about 10 kHz is further implemented by the local controllers within the main control loop to detect and minimize disturbances in the motor operation using estimated local control information.