17840196. Active Traction Motor Harmonic Masking Using Random Switching Frequency Process simplified abstract (FORD GLOBAL TECHNOLOGIES, LLC)
Active Traction Motor Harmonic Masking Using Random Switching Frequency Process
Organization Name
Inventor(s)
Donald Albert Bradley of Pleasant Ridge MI (US)
Active Traction Motor Harmonic Masking Using Random Switching Frequency Process - A simplified explanation of the abstract
This abstract first appeared for US patent application 17840196 titled 'Active Traction Motor Harmonic Masking Using Random Switching Frequency Process
Simplified Explanation
The patent application describes an automotive control system that uses a controller and an inverter to drive a traction motor with electrical energy from a traction battery. The controller is programmed to select a base switching frequency for the inverter, modify it by a random switching frequency, and control the inverter with the modified switching frequency to drive the traction motor.
- The controller selects a base switching frequency for the inverter.
- The base switching frequency is modified by a random switching frequency.
- The modified switching frequency is used to control the inverter and drive the traction motor.
Potential Applications:
- Electric vehicles: This technology can be used in electric vehicles to control the traction motor and improve its performance.
- Hybrid vehicles: The control system can be implemented in hybrid vehicles to optimize the operation of the traction motor and improve fuel efficiency.
Problems Solved:
- Switching noise sideband frequency: By selecting a base switching frequency that matches the harmonic frequency of the traction motor, the patent application aims to reduce the switching noise sideband frequency, which can cause interference and affect the performance of the motor.
Benefits:
- Reduced switching noise: The technology aims to minimize the switching noise sideband frequency, resulting in a quieter operation of the traction motor.
- Improved motor performance: By optimizing the switching frequency, the control system can enhance the performance and efficiency of the traction motor.
- Enhanced user experience: The reduced noise and improved motor performance can contribute to a better driving experience for the users of electric and hybrid vehicles.
Original Abstract Submitted
An automotive control system includes a controller for use with an inverter configured to drive a traction motor with electrical energy from a traction battery. The controller is programmed to select a base switching frequency for a control signal for the inverter such that a switching noise sideband frequency of the inverter is the same as a harmonic frequency of the traction motor, modify the selected base switching frequency by a random switching frequency to obtain a modified switching frequency, and control the inverter with the control signal having the modified switching frequency for the inverter to drive the traction motor.
