DC Voltage Conversion with Electronically Controlled Resistor
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Solution Overview
Problem
Existing DC voltage conversion systems fail to achieve variable high pulse voltage levels and effectively reduce electromagnetic noise radiation, as they only vary timing parameters of pulses without changing the output voltage magnitude.
Innovation Solution
The integration of an electronically controlled resistor and a second control voltage driver allows for regulation of the current through an inductive load, enabling variable high pulse voltage levels and reducing electromagnetic noise by adjusting the resistance of the electronically controlled resistor.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If only timing parameters of pulses are varied in existing DC voltage conversion systems, then the control mechanism is simple, but the output voltage magnitude cannot be changed and electromagnetic noise radiation is not reduced
Solution Approach 1:
The patent applies dynamics by making the resistance value changeable through an electronically controlled resistor (ECR) whose resistance can be dynamically adjusted via control voltage. This allows the system to vary output voltage magnitude dynamically rather than being fixed, resolving the contradiction between adaptability and complexity by using an electronically controllable component rather than multiple discrete circuits
Solution Approach 2:
The patent changes the resistance parameter of the ECR to control the current through the inductive load, which in turn varies the output voltage magnitude. By changing this physical parameter (resistance) rather than using complex timing control, the system achieves variable voltage output with relatively simple control mechanism, addressing both adaptability and complexity requirements
2Object-affected harmful factors
If existing systems use fixed resistance in the circuit, then the device structure is simple, but the electromagnetic noise radiation cannot be reduced and voltage regulation is not possible
Solution Approach 1:
The patent converts the harmful effect of electromagnetic noise by using the ECR to control and reduce the current through the inductive load. By regulating the current magnitude through resistance control, the system reduces the amplitude of voltage pulses and consequently lowers electromagnetic noise radiation, turning a harmful effect into a controllable parameter
Solution Approach 2:
The ECR acts as an intermediary element between the voltage source and the inductive load. By placing the controllable resistor in series with the load, it mediates the current flow and enables control over both the voltage magnitude and electromagnetic noise without requiring direct modification of the power source or load itself
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 enables the attainment of variable high pulse voltage levels while significantly reducing electromagnetic noise radiation, improving the efficiency and environmental impact of DC voltage conversion systems.
Implementation Method 1
a transformer (4), having a primary winding (3) and a secondary winding (6)
Implementation Method 2
a rectifier (7), connected to the secondary winding (6)
Implementation Method 3
an electronically controlled resistor (33), connected in series to a second terminal (13) of the controllable switch (10), to the limiting resistor (53)
Data Source
AI summary
An apparatus for DC voltage—DC voltage conversion comprises connected in series a high DC voltage source, a transformer, a rectifier, and a control voltage driver. Also connected in series are a primary winding of the transformer, a controllable switch, an electronically controlled resistor (ECR), and a limiting resistor. The ECR is controlled by the control voltage driver. The controllable switch is controlled by a controllable square wave generator. The controllable square wave generator and the controlled voltage driver are fed from a low DC voltage source. The controllable square wave generator is controlled by another control voltage driver fed from the high DC voltage source. The apparatus allows for obtaining variable value of high pulse voltage across the ECR and lowers the level of electromagnetic noise radiated by the apparatus to environment.