Current Transformer Control for DC Voltage Stabilization

The patent uses a current transformer to create a scaled-down copy of the primary current for measurement purposes. The current transformer generates a secondary current that is proportional to the primary current but much smaller in magnitude, allowing measurement without requiring large sensors. This copying approach enables DC voltage stabilization while avoiding the need for large current and voltage sensors, thus reducing system size and complexity.

The patent introduces a current transformer as an intermediary device between the primary circuit and the measurement/control system. The current transformer acts as a mediator that converts the large primary current into a manageable secondary current, which can then be used for control purposes without requiring large sensors. This intermediary approach resolves the contradiction by enabling measurement and control functions while avoiding direct connection to high-current circuits.

The patent makes the current transformer serve multiple functions: it provides both the measurement signal for DC voltage stabilization and simultaneously suppresses DC magnetization of the transformer core. By integrating these functions into a single component, the patent avoids adding separate sensors and active suppression circuits, thereby improving DC voltage stabilization capability without increasing the number of components.

The patent configures the current transformer to automatically suppress its own DC magnetization problem through proper winding connection and control. The transformer uses its own structure and operating principles to prevent DC flux accumulation, eliminating the need for external active suppression circuits or additional components. This self-service approach resolves the contradiction by achieving both stabilization capability and component reduction.