LS Electric has patented an inverter control method that involves generating a transfer function for current control by reflecting a zero-order hold and time delay, along with rotor position and speed. This method enhances the control of switching devices to output alternating current voltage effectively. GlobalData’s report on LS Electric 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 LS Electric, Battery management systems was a key innovation area identified from patents. LS Electric's grant share as of July 2024 was 62%. Grant share is based on the ratio of number of grants to total number of patents.
Inverter control method for motor voltage regulation
The patent US12068705B2 outlines an inverter control method and apparatus designed to manage the operation of switching devices that output alternating current (AC) voltage. The method involves generating a transfer function of current control, which serves as a control signal in a discrete time domain. This process includes reflecting a zero-order hold (ZOH), accounting for time delays, and incorporating the rotor position and speed of a motor. The method further details the generation of multiple voltage equations across different coordinate systems, ultimately leading to the creation of a transfer function that facilitates effective inverter control.
Additionally, the patent describes an inverter control apparatus that comprises a rectifier, a smoothing component, and an inverter section with multiple switching devices. The controller within the apparatus is responsible for generating the transfer function of current control and managing the switching devices based on this function. The controller's operations include discretizing voltage equations and reflecting motor parameters to ensure accurate control in the discrete time domain. The claims also specify the design of the current control response characteristic using a low-pass filter, enhancing the precision of the inverter's performance.
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GlobalData Patent Analytics tracks bibliographic data, legal events data, point in time patent ownerships, and backward and forward citations from global patenting offices. Textual analysis and official patent classifications are used to group patents into key thematic areas and link them to specific companies across the world’s largest industries.
