Sungrow Power Supply has been granted a patent for an isolated bidirectional converter that features a transformer module with a primary and secondary circuit. The design includes a first branch with an inductor and current sensor to control current flow, preventing transformer saturation. GlobalData’s report on Sungrow Power Supply 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 Sungrow Power Supply, Smart energy mgmt systems was a key innovation area identified from patents. Sungrow Power Supply's grant share as of June 2024 was 62%. Grant share is based on the ratio of number of grants to total number of patents.
Isolated bidirectional converter with transformer module control method
The patent US12021456B2 describes an isolated bidirectional converter designed for efficient energy transfer between direct current (DC) and alternating current (AC) systems. The converter comprises a three-phase transformer module, a primary circuit, and a secondary circuit. The primary circuit connects a DC end to one side of the converter and an AC end to the primary winding of the transformer. Similarly, the secondary circuit connects an AC end to the secondary winding and a DC end to the opposite side of the converter. Notably, the design includes at least two phases of either the primary or secondary windings connected in parallel to a first branch, which features a first inductor and a first current sensor in series.
Further claims detail the configuration of the converter, indicating that both the primary and secondary circuits can be three-phase circuits. The patent also introduces the concept of an asymmetric isolated bidirectional converter, which may not include a blocking capacitor in one of the circuits. The design allows for the use of a magnetizing inductor as an impedance matching inductor, with specific inductance ratios outlined to optimize performance. Additionally, the converter can incorporate a second branch with a blocking capacitor and a second inductor, which also serves as an impedance matching component. The claims extend to methods for controlling the converter, focusing on monitoring current through the first inductor and adjusting the duty cycle of a switch transistor to manage direct current components effectively.
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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.
