Inductive Energy Transfer Circuit with Dynamic Resistance Control
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Solution Overview
Problem
Existing inductive energy transmission systems for small electrical devices face inefficiencies in standby mode, leading to high power consumption due to the complexity of determining and adjusting energy requirements between the primary and secondary sides of the transformer.
Innovation Solution
A circuit arrangement featuring a capacitive series resistor, rectifier, and load resistor with a controllable switch, allowing the complex input resistance to be adjusted based on the load, reducing active power consumption in standby mode by terminating the output with a small resistance and using a device to detect the inductive load on the oscillator.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If the oscillator operates continuously to maintain readiness for energy transmission, then the system can immediately respond to energy demands, but the active power consumption remains high during standby mode
Solution Approach 1:
The patent applies dynamics by making the circuit resistance adjustable based on operating conditions. The circuit includes a controllable switch that changes the resistance value from a first resistance (during energy transmission) to a second resistance (during standby), allowing the system to adapt its power consumption characteristics dynamically while maintaining operational readiness.
Solution Approach 2:
The patent changes the electrical resistance parameter of the circuit based on the operating state. By switching between different resistance values (first resistance for operation, second resistance for standby), the system optimizes power consumption while maintaining the capability to respond to energy demands quickly.
2Use of energy by moving object
If the circuit uses a simple resistor to limit current during standby, then power consumption is reduced, but the system cannot quickly respond to increased energy demands
Solution Approach 1:
The circuit employs a controllable switch that dynamically changes the resistance value based on energy demand conditions. When energy transmission is required, the switch transitions to a first resistance state that enables full power delivery; during standby, it switches to a second resistance state that minimizes power consumption while maintaining system readiness.
Solution Approach 2:
The system uses feedback from the energy transmission unit to control the switch state. The control device monitors the operational status and adjusts the circuit resistance accordingly, ensuring the system adapts to energy demands while optimizing power consumption during standby periods.
3Measurement precision
If the system continuously monitors energy requirements on the secondary side, then it can accurately adjust power transmission, but the complexity of the control circuit increases
Solution Approach 1:
The patent implements a feedback mechanism where the control device monitors the operational status of the energy transmission unit and uses this information to control the switch state. This feedback approach enables accurate adjustment of power transmission based on actual energy requirements while keeping the control circuit relatively simple.
Solution Approach 2:
The system uses the operational status information from the energy transmission unit itself to control the circuit resistance, rather than requiring separate complex monitoring systems. The energy transmission unit's own operational data serves the dual purpose of indicating energy requirements and controlling the power delivery.
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 effectively minimizes power consumption in standby mode by dynamically adjusting the circuit's resistance and controlling the oscillator's power usage, aligning with energy efficiency directives, and enabling immediate detection of increased power requirements on the secondary side.
Implementation Method 1
an alternating magnetic field is generated in the charging station by an oscillator, which has a coil element and a capacitor element, with the coil element also forming the primary coil of an inductive transformer
Implementation Method 2
The power pack has a capacitive series resistor, a rectifier and a load resistor, and has a complex input resistance
Data Source
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AI summary
The invention relates to a circuit for the inductive transfer of energy to a small-scale electrical unit, said circuit comprising an oscillator (LC), a power supply (N) having a complex input resistance that supplies the oscillator (LC) with energy, and a device for detecting the inductive load of the oscillator and for modifying the complex input resistance of the power supply according to the load of the oscillator (LC). The load of the oscillator and therefore the power requirements of the small-scale electrical unit are determined on the basis of an electrical variable in the oscillator. The invention also relates to a method for the inductive transfer of energy from a circuit to a small-scale electrical unit, the circuit comprising an oscillator (LC), a power supply (N) having a complex input resistance that supplies the oscillator (LC) with energy, and a device for detecting the inductive load of the oscillator and for modifying the complex input resistance of the network component according to the load of the oscillator (LC). In the event of a small load on the oscillator (LC), the active power absorption of the power supply is reduced by modifying the complex input resistance.