Power Conversion Device Component Layout to Reduce Wiring Complexity
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The existing power conversion devices with a power buffer experience complex wiring patterns due to the separation of reactors and capacitors by switching elements, which complicates the layout and increases the risk of high-voltage components affecting low-voltage components.
Innovation Solution
A power conversion device configuration where the converter, first switch, second switch, and inverter are disposed in a specific order along one direction, while the first reactor and first capacitor are disposed in a different order along a perpendicular direction, with at least one set of the reactor and converter or capacitor and inverter placed side by side along the original direction, simplifying the wiring pattern.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If the switching element included in the discharging circuit and the switching element included in the charging circuit separate the capacitor included in the discharging circuit from the reactor included in the charging circuit, then a low-voltage component is less likely to be adversely affected by a high-voltage component, but the wiring pattern becomes rather complicated
Solution Approach 1:
The patent applies dimensional arrangement by disposing components in both first and second directions. The converter, first switch, second switch, and inverter are disposed in a specific order along a second direction, while the first reactor and first capacitor are disposed in a different order along a perpendicular first direction. This two-dimensional layout optimizes wiring paths while maintaining electrical isolation between high-voltage and low-voltage components.
Solution Approach 2:
The patent segments the power conversion device into distinct functional modules: converter unit, power buffer unit (with charging and discharging circuits), and inverter unit. Each module is spatially separated and independently arranged, allowing optimized wiring within each segment while reducing overall wiring complexity through modular organization.
2Reliability
If the reactor and capacitor are separated by switching elements to isolate high-voltage and low-voltage components, then safety is improved, but the layout complexity increases
Solution Approach 1:
The patent uses spatial separation in multiple directions to achieve both isolation and simplified layout. High-voltage components (reactor, charging switch) and low-voltage components (capacitor, discharging switch, inverter) are arranged in different spatial zones defined by first and second directions, maintaining electrical isolation while creating logical grouping that simplifies wiring routes.
Solution Approach 2:
The switching elements serve as intermediary components that bridge high-voltage and low-voltage zones. The first switch and second switch are strategically positioned to control power flow between the reactor and capacitor while maintaining electrical isolation, acting as mediators that enable functional connection without direct electrical contact between high-voltage and low-voltage components.
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 significantly simplifies the wiring pattern in power conversion devices with a power buffer, reducing complexity and minimizing the adverse effects of high-voltage components on low-voltage components.
Implementation Method 1
a converter (2) connected to an AC power source (1) to perform AC-DC conversion
Implementation Method 2
a charging circuit (41) that includes a first reactor (L4) and a first switch (S1) mutually connected in series between the pair of DC power source lines, receives power from the pair of DC power source lines via the first switch to store energy in the first reactor
Implementation Method 3
a discharging circuit (42) that includes the first capacitor and a second switch (Sc) mutually connected in series between the pair of DC power source lines and applies power to the pair of DC power source lines through a discharge of the first capacitor via the second switch
Implementation Method 4
an inverter (5) that outputs an AC current (Iu, Iv, Iw) to a load (6) through DC-AC conversion of a first voltage (Vdc) between the pair of DC power source lines
Data Source
AI summary
A converter, a first switch, a second switch, and an inverter are disposed in that order along a second direction, at a first position in a first direction. A reactor and a capacitor are disposed in that order along the second direction, at a second position in the first direction. Energy is stored in the reactor via the first switch. The capacitor is discharged via the second switch. At least one of a set of the reactor and the converter and a set of the capacitor and the inverter is disposed side by side along the first direction.