Power Control System with Triac Tab Grounding
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Solution Overview
Problem
Existing electric power control systems face issues with transient high voltage, waveform distortion, harmonic generation, and equipment burnout due to the switching of coil windings, which are not effectively addressed by conventional automatic voltage regulators.
Innovation Solution
A control unit and transformer system that detects input voltage in real-time, controls triac devices to switch tabs and ground unnecessary tabs with N-phase, preventing induced voltage and allowing for arbitrary power control without an auxiliary transformer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the tab of the triac device is switched to ON state to adjust output voltage, then the target voltage can be outputted, but a high EMF is generated in the winding of the unused tab causing high voltage induction in the triacs and conduction regardless of ON/OFF signal
Solution Approach 1:
The patent extracts and removes the harmful high voltage induction from the system by introducing a grounding mechanism. Specifically, the unused tab windings are connected to ground through a grounding switch, which extracts the harmful electromagnetic induction effect from the active circuit, preventing it from causing unwanted triac conduction while preserving the voltage adjustment functionality.
Solution Approach 2:
The grounding switch acts as an intermediary element between the unused tab windings and the ground. This intermediary component provides a controlled path for the induced high voltage, allowing it to be safely discharged to ground rather than causing harmful effects on the triac devices, thus mediating between the voltage adjustment operation and the triac stability.
2Stability of the object's composition
If conventional automatic voltage regulators are used to stabilize output voltage, then voltage stabilization is achieved, but transient high voltage occurs during tab switching causing waveform distortion and equipment burnout
Solution Approach 1:
The patent applies preliminary anti-action by preemptively grounding the unused tab windings before switching operations occur. The grounding switch is positioned and configured to prevent the generation of transient high voltage in the first place, rather than attempting to mitigate it after it occurs. This preliminary protective measure prevents waveform distortion and equipment damage while maintaining voltage stabilization.
Solution Approach 2:
The grounding mechanism serves as a beforehand cushioning measure by providing a safe discharge path for any induced voltages before they can cause harmful effects. This protective grounding arrangement cushions the system against transient high voltage spikes that occur during tab switching, preventing them from reaching levels that would cause waveform distortion or equipment burnout.
3Adaptability or versatility
If multiple tabs are equipped in the secondary side coil to provide different voltages, then arbitrary voltage output is enabled, but high voltage is induced in the triacs causing conduction regardless of control signal
Solution Approach 1:
The patent converts the harmful induced high voltage in unused tabs into a beneficial effect by redirecting it to ground. Instead of allowing the induced voltage to cause harmful conduction in triacs, the grounding switch converts this potentially harmful electromagnetic induction into a safe discharge path, transforming the problem into a solution that preserves the multi-voltage output capability.
Solution Approach 2:
The grounding switch serves as an intermediary that mediates between the multiple tab windings and the triac devices. By providing a controlled grounding path for unused tabs, it prevents the induced high voltage from affecting the triacs while allowing the system to maintain its adaptable voltage output capability across multiple settings.
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
This solution suppresses transient high voltage and enables arbitrary electric power control, improving operational characteristics and preventing equipment burnout, while eliminating the need for an auxiliary transformer.
Implementation Method 1
a transformer which has a primary inductive coil inducing the AC voltage input from the power supply section to the secondary side according to turns ratio
Implementation Method 2
a switch unit including a plurality of triac devices for switching one tab among the plurality of tabs
Data Source
AI summary
The present invention relates to an electric power control system and method therefor, and comprises a control unit 10 and a transformer 20 connected thereto. The control unit 10 detects varying input voltage in real-time, controls switching of triac devices equipped in the transformer, and applies control signal which switches triac device among a plurality of triac devices for target voltage output to the transformer 20. The transformer 20 outputs target voltage by switching tabs of triac devices according to control signal, supplies power by switching tabs of triac devices corresponding to target voltage included in control signal, and preventing EMF induced from primary coil to secondary coil by grounding the tabs of unused triac devices with N-phase for adjustment to the target voltage.