Serial Gate Command Encoding for Multi-Switch Power Converters
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Solution Overview
Problem
Existing power conversion apparatuses require multiple serial lines for controlling switching elements in power conversion circuits and independent switching elements, leading to a complex structure.
Innovation Solution
A command device encodes multiple command signals into a smaller number of bits, generating encoded data that is transmitted via a single serial line to a driving device, which decodes and controls both types of switching elements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple serial lines are used to control switching elements in power conversion circuits and independent switching elements, then the control coverage is improved, but the structure becomes complicated
Solution Approach 1:
The patent combines multiple control channels (power conversion circuit control and independent switching element control) into a single serial line communication system. The command device generates a unified data frame containing both types of control information, which is transmitted through one serial line to the driving device, eliminating the need for multiple separate serial lines and reducing structural complexity while maintaining comprehensive control capability
Solution Approach 2:
The serial line is designed to serve multiple functions simultaneously: it transmits control signals for both power conversion circuit switching elements and independent switching elements, carries synchronization information, and provides a universal communication interface between the command device and driving device, thereby reducing the number of dedicated signal lines needed
2Adaptability or versatility
If multiple serializers are used to handle more than eight switching elements, then the control capability is improved, but the device complexity increases
Solution Approach 1:
The patent changes the data organization parameter by grouping control signals into a unified data frame structure that can accommodate more than eight switching elements. Instead of using multiple 8-bit serializers, the system uses a single serializer that handles an extended data frame format, thereby expanding control capability while avoiding the complexity of multiple serializer units
Solution Approach 2:
The patent transitions from a limited 8-bit parallel data dimension to an extended serial data dimension, allowing the single serializer to handle control signals for more than eight switching elements by utilizing the time-multiplexed serial communication capability rather than being constrained by parallel bit-width limitations
Data Source
AI summary
A command device is connected with a serial line to a driving device for controlling operations of a plurality of first switching elements and one or more second switching elements. The command device includes a command signal generator to generate a plurality of first command signals and one or more second command signals, an encoder to generate encoded data by encoding at least some signals of the plurality of first command signals and the one or more second command signals, and a command-device serializer to generate serial command data through serial conversion of the encoded data and transmit the serial command data to the driving device via the serial line.