Resonance Circuit Control Equipment Sensorless Actuation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing methods for controlling resonance circuits require costly sensors to determine choke voltage and choke current, making resonance control complex and expensive.
Innovation Solution
The method operates control equipment based on voltage detected at the resonance circuit connection, eliminating the need for sensors by using a half-bridge circuit with a center tap, where circuit elements are periodically opened and closed to detect voltage, and a comparator converts this voltage into a digital signal for actuation frequency control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If sensors are used to determine choke voltage and choke current, then measurement precision is improved, but device complexity and cost increase
Solution Approach 1:
The patent extracts the measurement function from external sensors and implements it within the existing half-bridge circuit structure. The voltage at the center tap connection point is used to derive choke current information without adding separate sensing components, thereby eliminating the need for additional sensors while maintaining measurement capability
Solution Approach 2:
The patent introduces the center tap voltage as an intermediary measurement point. Instead of directly measuring choke current with sensors, the voltage at the center tap connection serves as a mediator that contains information about the choke current, allowing indirect determination through voltage measurement which is simpler and less costly
2Measurement precision
If sensors and evaluation devices are provided for resonance control, then control precision is improved, but device complexity increases
Solution Approach 1:
The half-bridge circuit's center tap connection serves multiple functions: it is part of the power switching structure and simultaneously provides a measurement point for resonance control. This multi-functionality eliminates the need for separate sensing circuits while maintaining control precision
Solution Approach 2:
The circuit structure itself provides the measurement information needed for control. The center tap voltage, which is already present due to the half-bridge configuration, serves the dual purpose of circuit operation and control measurement, making the system self-sufficient without external sensing additions
Data Source
AI summary
The invention relates to a method for operating control equipment (1) of a resonance circuit (2), wherein the control equipment (1) comprises at least two circuit elements (8, 9) connected in series, in particular each comprising a recovery diode (13, 14) connected in parallel, between which a connection (6) of the resonance circuit (2) is connected. According to the invention, the circuit elements (8, 9) are actuated as a function of the voltage detected at the connection (6). The invention further relates to control equipment (1) of a resonance circuit (2).