Induction Power System With Resonant Power Distribution
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Solution Overview
Problem
Induction power systems face inefficiencies in power supply and manufacturing costs due to limitations in power loss during current switching and the inability to provide separate control and load power, leading to wasted energy and larger system sizes.
Innovation Solution
The system incorporates a primary side circuit with a main inductor generating a magnetic field and a secondary side circuit with series and parallel connected inductors and capacitors, allowing for separate control and load power distribution, along with a transformer rectifier unit and switching device to minimize power loss and increase efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If one set of power is used to drive both control circuit and load circuit, then device complexity is reduced, but power supply efficiency deteriorates due to inability to provide system standby function
Solution Approach 1:
The patent divides the power distribution into two separate circuits: a control circuit powered by a first power supply and a load circuit powered by a second power supply. This segmentation allows independent control of power delivery, enabling the system to maintain control functions while disabling load power during standby conditions, thus eliminating power waste without significantly increasing overall system complexity.
2Productivity
If switching frequency is increased to reduce system size, then productivity is improved, but power loss due to current switching increases
Solution Approach 1:
The patent employs resonant switching techniques where the switching frequency is synchronized with the natural resonant frequency of the LC circuits. This periodic action at resonant frequencies minimizes switching losses by ensuring current naturally crosses zero during switching transitions, allowing high-frequency operation for compact system design without excessive power loss.
Solution Approach 2:
The patent optimizes switching parameters including frequency, duty cycle, and timing to minimize power loss. By adjusting these parameters and operating at resonant frequencies, the system achieves high working frequencies for reduced component sizes while maintaining acceptable efficiency levels through parameter optimization.
3Loss of energy
If manual switching off of complete secondary side circuit is used at no load condition, then power waste is reduced, but loss of time increases due to manual intervention
Solution Approach 1:
The patent implements automatic power management where the control circuit continuously monitors system conditions and automatically controls the power switches. During no-load conditions, the system automatically disables the load power supply while maintaining control circuit operation, eliminating the need for manual intervention and achieving both power savings and time efficiency through self-service operation.
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 configuration enables the system to provide twice the load power of previous systems, reduce power waste, and decrease system size and manufacturing costs by optimizing power distribution and frequency.
Implementation Method 1
a primary side circuit and a secondary side circuit, wherein the primary side circuit comprises at least one main inductor configured to generate a current-induced magnetic field
Implementation Method 2
The first capacitor and the first inductor are electrically connected in series, and the first capacitance value matches the first inductance value, so as to generate a series resonance and provide a control power
Implementation Method 3
The second capacitor is electrically connected in parallel with the first capacitor, the first inductor, and the second inductor, and the second capacitance value matches the second inductance value, so as to generate a parallel resonance and provide a load power
Data Source
AI summary
An induction power system configured to drive a load includes a primary side circuit (PSC) and a secondary side circuit (SSC). The PSC has a main inductor configured to generate a current-induced magnetic field. The SSC has an induction electrification unit (IEU) and a power distribution unit (PDU). The IEU has a first inductor and a second inductor connected in series, and is adjacent to the main inductor to generate an induced AC. The PDU has a first capacitor, a second capacitor, and a switching device. The first capacitor and the first inductor are connected in series and generate a series resonance to supply a control power. The second capacitor is connected in parallel with the first inductor, the second inductor, and the first capacitor, and generates a parallel resonance, to provide a load power. When the switching device is turned on, the load power is supplied to the load.