BorgWarner. has been granted a patent for a method of motor control using a complex vector flux regulator (CV?R). The method involves receiving a modulation index, comparing it to a feedback index, and generating flux commands based on an error scalar to optimize motor performance. GlobalData’s report on BorgWarner gives a 360-degree view of the company including its patenting strategy. Buy the report here.
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According to GlobalData’s company profile on BorgWarner, Turbocharger bearings was a key innovation area identified from patents. BorgWarner's grant share as of June 2024 was 64%. Grant share is based on the ratio of number of grants to total number of patents.
Motor control method using complex vector flux regulation
The patent US12047022B2 outlines a method and system for controlling a motor using a motor controller equipped with a complex vector flux regulator (CV?R). The method begins by receiving a modulation index, which is a scaled representation of the available voltage from a voltage source. This modulation index is compared to a feedback modulation index to generate an excursion error. The excursion error is then converted into a scalar voltage using a voltage scalar, which is further transformed into an error scalar in the motor's flux domain. The final direction of this error scalar is determined, and flux commands are provided to the CV?R in the d and q domains based on the error scalar and its direction, with the time constant calculated as a ratio multiplied by the motor's sampling period.
Additionally, the system includes computer-readable instructions executed by processors that perform similar operations as described in the method. The instructions facilitate the determination of the final direction in the flux domain, which is influenced by the available voltage represented as a circle in that domain. The system also incorporates a proportional integral controller that utilizes the error scalar to produce the necessary flux change for motor control, converting this change into d and q components based on trigonometric functions of the final direction. The patent further describes an internal permanent magnet motor that integrates these components, including a stator, rotor, inverter, and the motor controller, to effectively manage motor operation through the CV?R.
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