Shared Gate Drive Power Supply Layout for Bidirectional Converters
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Solution Overview
Problem
The existing gate driving power source devices have a large mounting area and high costs due to the requirement of multiple power source generation circuits for each inverter circuit phase, leading to increased board size and expenses when multiple gate drive circuits are mounted on a single printed board.
Innovation Solution
A gate driving power source device that supplies a shared DC power source to multiple switching elements using a step-up/down converter and AC/DC conversion circuits, with a power source unit and a control circuit mounted on a single printed board, reducing the number of power source units and optimizing their positional arrangement to minimize space.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple individual power source generation circuits are used for each gate drive circuit, then reliable power supply is ensured, but the mounting area and board size increase significantly
Solution Approach 1:
The patent combines multiple individual power source generation circuits into a single shared power source unit that supplies power to multiple gate drive circuits through a power distribution network. This merging approach reduces the total number of power source units from multiple (one per gate drive circuit) to a single shared unit, thereby significantly reducing the mounting area while maintaining power supply reliability through redundant distribution paths.
Solution Approach 2:
The shared power source unit is designed to serve multiple gate drive circuits simultaneously, making it a universal power supply solution. This multi-functional power source can distribute power to various gate drive circuits through controlled switching and power distribution networks, eliminating the need for dedicated power sources for each circuit while reducing overall system complexity and board space.
2Power
If multiple power source units are mounted on the printed board, then each gate drive circuit receives adequate power, but the board size and manufacturing costs increase
Solution Approach 1:
The patent merges multiple power source units into a single shared power source unit with integrated power distribution capabilities. This consolidation reduces the number of components that need to be sourced, mounted, and tested during manufacturing, thereby lowering manufacturing costs while maintaining adequate power delivery to all gate drive circuits through the integrated distribution network.
Solution Approach 2:
The shared power source unit is designed with universal power distribution capabilities that can serve multiple gate drive circuits through controlled switching. This multi-functional design eliminates the need for multiple specialized power units, reducing component variety and simplifying the manufacturing process, which directly lowers production costs while maintaining power delivery adequacy.
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 results in a gate driving power source device with a significantly smaller mounting area compared to traditional designs, reducing costs and board size while maintaining reliable power supply to multiple gate drive circuits.
Implementation Method 1
a power source unit 1 that supplies a shared DC power source to at least two of a step-up/down upper arm switching element 3, a step-up/down lower arm switching element 4, an AC/DC upper arm switching element 5, 7, or 9, and an AC/DC lower arm switching element 6, 8, or 10
Data Source
AI summary
A gate driving power source device individually supplies a DC power source to a plurality of gate drive circuits provided for a power conversion device. The power conversion device includes a step-up/down converter and one or a plurality of AC/DC conversion circuits. The step-up/down converter includes a step-up/down upper arm switching element and a step-up/down lower arm switching element. The AC/DC conversion circuit includes an AC/DC upper arm switching element and an AC/DC lower arm switching element. The gate driving power source device includes a power source unit that supplies a shared DC power source to at least two of the step-up/down upper arm switching element, the step-up/down lower arm switching element, the AC/DC upper arm switching element, and the AC/DC lower arm switching element.