US Patent Application 17826592. SYSTEMS AND METHODS FOR REDUCING BATTERY RIPPLE LOSS simplified abstract
Contents
SYSTEMS AND METHODS FOR REDUCING BATTERY RIPPLE LOSS
Organization Name
GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor(s)
Chandra S. Namuduri of Troy MI (US)
Suresh Gopalakrishnan of Troy MI (US)
SYSTEMS AND METHODS FOR REDUCING BATTERY RIPPLE LOSS - A simplified explanation of the abstract
This abstract first appeared for US patent application 17826592 titled 'SYSTEMS AND METHODS FOR REDUCING BATTERY RIPPLE LOSS
Simplified Explanation
The abstract describes a power control system for an electric vehicle that includes multiple power inverters connected to a battery system.
- The power inverters have power switches and are connected to stator phase windings of electric machines.
- A controller determines the switching frequency and phase offsets for the electric machines.
- The controller generates pulse width modulation (PWM) switching signals for one power inverter and outputs PWM switching signals to the other electric machines based on the phase offsets.
- The system allows for efficient power control and distribution in an electric vehicle.
Original Abstract Submitted
A power control system for an electric vehicle comprises N power inverters configured to connect to a battery system of the electric vehicle. Each of the N power inverters includes a plurality of power switches, where N is an integer greater than one. The N power inverters are configured to connect to stator phase windings of N electric machines, respectively. A controller is configured to determine a switching frequency for the N electric machines and (N−1) phase offsets for (N−1) ones of the N electric machines, generate a set of pulse width modulation (PWM) switching signals at the switching frequency for a first one of the N power inverters, and output (N−1) sets of PWM switching signals to the (N−1) ones of the N electric machines based on the set of PWM switching signals and the (N−1) phase offsets.
