Transformer-Based Circuit for Electromagnetic Drive Actuation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Electromagnetic drive systems face challenges in adapting control current and magnetic force to mechanical system force-displacement characteristics, leading to unsafe actuation, increased wear, and interference emissions, especially in low-voltage situations and varying temperature ranges.
Innovation Solution
A circuit arrangement with a transformer-based converter stage, rectifier bridge, smoothing capacitor, and PWM circuit provides regulated DC voltage, allowing for increased actuating voltage and reducing interference, ensuring safe and gentle operation over the entire input voltage and temperature range, with features like a second transistor for holding circuits and safety diodes to manage voltage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If direct voltage application is used to actuate electromagnetic drive systems, then the control is simple, but the control current and magnetic force are not adapted to force-displacement characteristics leading to unsafe actuation and increased wear
Solution Approach 1:
The patent applies parameter changes by dynamically adjusting the control current and voltage parameters to match the force-displacement characteristics of the mechanical system. The control circuit modifies electrical parameters (current magnitude, pulse duration) to optimize the actuation process, ensuring safe operation while maintaining control effectiveness.
2Reliability
If electronic ballasts are used to control energy supply to drive systems, then the force path-time characteristic can be optimized, but the control circuit complexity increases
Solution Approach 1:
The patent implements dynamics by using a dynamic control circuit that continuously adjusts electrical parameters based on real-time conditions. The system transitions from static voltage application to dynamic pulse-width modulation and current control, allowing optimization of force characteristics while managing circuit complexity through intelligent control strategies.
3Use of energy by moving object
If control voltage is reduced in low-voltage situations, then energy consumption decreases, but safe actuation becomes impossible
Solution Approach 1:
The patent applies periodic action by using pulsed voltage and current delivery instead of continuous supply. The control circuit delivers optimized voltage pulses during actuation and reduces or stops supply during holding phases, enabling energy reduction in low-voltage situations while maintaining safe actuation through precisely timed high-power pulses.
4Object-affected harmful factors
If clocked operation is used to reduce interference emissions, then electromagnetic compatibility improves, but the ability to provide sharp force increases over time is limited
Solution Approach 1:
The patent resolves this contradiction by dynamically changing electrical parameters including voltage magnitude, current amplitude, and pulse duration. The control circuit adjusts these parameters to deliver sharp force increases when needed while using softened edges and controlled rise times to minimize electromagnetic interference, balancing both requirements through real-time parameter optimization.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution enables safe, mechanically gentle operation with reduced interference emissions, allowing for sharp force increases over time and maintaining a stable end position, extending the service life of moving components and ensuring reliable actuation across a wide voltage range.
Implementation Method 1
at least one transformer, with at least one main switching transistor, by means of which the drive system can be controlled in a characteristic pulse train system
Implementation Method 2
with at least one rectifier bridge, with at least one smoothing capacitor, with at least one main switching transistor
Implementation Method 3
whose DC output voltage is smoothed by the smoothing capacitor and added to the voltage of the control voltage source
Implementation Method 4
electromagnetic drive system for electromechanical devices, in particular with a mechanically locked end position
Data Source
Figure 1
Figure 2
AI summary
The present invention relates to a circuit arrangement for actuating an electromagnetic drive system for electromechanical devices, in particular comprising a mechanically locked end position, at least one control voltage source (UB), at least one closed-loop and open-loop control circuit (1), at least one drive system (2), at least one transformer (T1), at least one rectifier bridge (VD5, VD6, VD7, VD8), at least one smoothing capacitor (C5), at least one main switching transistor (VT2) by means of which the drive system (2) can be controlled in a characteristic pulse tracking system and wherein the main switching transistor (VT2) is connected in series with a primary branch of the transformer (T1), wherein the transformer (T1) is connected to the supply voltage (UB) and the secondary side of the transformer (T1) supplies the rectifier bridge (VD5, VD6, VD7, VD8) whose DC output voltage is smoothed by the smoothing capacitor (C5) and is added to the voltage of the control voltage source (UB) such that an input with DC voltage with a temporal supply gradient occurs. The present invention also relates to a method for operating a circuit arrangement.