Two-Stage Resonant Voltage Converter for Loss and Heat Distribution
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing voltage converter circuits, particularly those using DC-DC converters, suffer from energy losses and uneven heat dissipation, leading to component damage due to the concentration of voltage adjustment tasks in a single component.
Innovation Solution
A voltage converter circuit comprising a rectifier filter circuit, a power factor converter circuit, a full-half bridge resonance converter circuit, a voltage regulation control circuit, and a voltage feedback control circuit, which distributes the voltage adjustment tasks between the power factor converter circuit and the full-half bridge resonance converter circuit, allowing for improved power factor adjustment and reduced energy losses.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If a DC-DC converter is used to adjust input voltage to output voltage, then voltage conversion is achieved, but energy losses concentrate in the DC-DC converter causing component damage
Solution Approach 1:
The patent divides the voltage conversion function into two separate stages: a power factor converter circuit (PFC) and a full-half bridge resonance converter circuit. The PFC handles power factor correction and initial voltage adjustment, while the resonance converter performs final voltage regulation. This segmentation distributes energy conversion tasks across multiple components, preventing excessive heat concentration in a single DC-DC converter and reducing energy losses.
2Power
If voltage adjustment task is concentrated in single component, then voltage conversion is achieved, but uneven heat dissipation occurs
Solution Approach 1:
The patent segments the voltage adjustment function across two distinct circuits: the power factor converter circuit and the full-half bridge resonance converter circuit. Each circuit handles a portion of the voltage conversion task, which distributes the heat generation across multiple components rather than concentrating it in one device. This leads to more uniform heat dissipation and improved thermal management.
Solution Approach 2:
The patent implements a dynamic switching mechanism between full-bridge and half-bridge modes in the resonance converter circuit. By dynamically adjusting the operating mode based on load conditions, the system optimizes power distribution and heat generation across different components, achieving more balanced thermal characteristics under varying operating conditions.
3Adaptability or versatility
If power factor converter circuit is added, then power factor is improved, but device complexity increases
Solution Approach 1:
The patent combines the power factor correction function and voltage conversion function into an integrated two-stage architecture. The power factor converter circuit is designed to work seamlessly with the full-half bridge resonance converter circuit, where the output of the PFC serves as the input to the resonance converter. This merging of functions, while adding a stage, creates a coordinated system that achieves both power factor improvement and voltage conversion without proportionally increasing complexity.
Solution Approach 2:
The power factor converter circuit serves multiple purposes: it corrects the power factor of the input current, performs initial voltage elevation, and provides a stable input to the resonance converter circuit. By designing the PFC with multi-functionality, the patent reduces the need for separate dedicated circuits for each function, thereby limiting the increase in overall device complexity while achieving power factor improvement.
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 proposed solution effectively adjusts input voltage to supply voltage, distributes voltage difference across multiple components, and improves power factor, thereby reducing energy losses and enhancing heat dissipation efficiency.
Implementation Method 1
The rectifier filter circuit is configured to receive an input voltage and rectify and filter the input voltage
Implementation Method 2
The rectifier filter circuit is configured to receive an input voltage and rectify and filter the input voltage
Implementation Method 3
The power factor converter circuit has a first gain, and is configured to convert the rectified and filtered voltage to a power factor voltage according to the first gain
Implementation Method 4
The full-half bridge resonance converter circuit has a second gain, and is configured to convert the power factor voltage to a supply voltage according to the second gain
Implementation Method 5
The full-half bridge resonance converter circuit has a second gain, and is configured to convert the power factor voltage to a supply voltage according to the second gain
Implementation Method 6
the power factor converter circuit can improve a power factor of the voltage converter circuit
Data Source
AI summary
A voltage converter circuit includes rectifier filter circuit, power factor (PFC) converter circuit, full-half bridge resonance converter circuit, voltage regulation control circuit, and voltage feedback control circuit. The PFC converter circuit is configured to convert the rectified and filtered voltage of the rectifier filter circuit to PFC voltage according to first gain. The full-half bridge resonance converter circuit is configured to convert the PFC voltage to a supply voltage according to second gain. The voltage regulation control circuit is configured to generate three voltage regulation signals according to output voltage. The PFC converter circuit is configured to adjust the first gain according to a first voltage regulation signal. The full-half bridge resonance converter circuit is configured to operate in one of three resonance modes according to a second voltage regulation signal. The voltage feedback control circuit is configured to adjust the second gain according to a third voltage regulation signal.