Serial Interface for Power Stack Control
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Solution Overview
Problem
Existing Power Stack Control Systems face issues with inadequate power and grounding support, non-standard digital logic levels, limited pin count for status/error information, inability to control multiple IGBT Interface boards, and lack of precise global clock control, which hinder efficient AC power generation from DC or AC input voltage.
Innovation Solution
Implementing a serial interface connection that supports multiple power stacks with a Master Control Unit, enabling parallel communication between interface and driver boards, and incorporating a global synchronized clock for precise timing, along with customizable packet structures and network connectivity for remote access and data logging.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a parallel interface via ribbon cable is used to control Power Stacks, then direct control of IGBT Interface boards is enabled, but inadequate power and grounding support is provided
Solution Approach 1:
The patent introduces a serial interface as an intermediary communication channel between the master control unit and IGBT interface boards. This serial interface handles control signaling separately from power delivery, allowing the power distribution system to be optimized for electrical performance while the serial interface provides reliable control. The separation of control signaling from power delivery resolves the contradiction by allowing each subsystem to be optimized independently.
2Device complexity
If a parallel interface with limited pins is used, then simple connection is achieved, but adequate status/error information cannot be provided back to Master Control Unit
Solution Approach 1:
The patent replaces the mechanical parallel interface (ribbon cable with limited pins) with a serial interface system. The serial interface uses fewer physical pins but compensates by encoding status and error information in a serialized data stream. This substitution allows comprehensive information transfer while maintaining connection simplicity, as the serial protocol can convey multiple bits of status information through sequential bit transmission rather than requiring multiple parallel pins.
3Device complexity
If an existing interface without global clock support is used, then simple interface design is maintained, but precise timing control between Master Control Unit and Power Stack is not achieved
Solution Approach 1:
The patent introduces a global clock signal as an intermediary timing reference that mediates between the master control unit and power stacks. The serial interface is designed to synchronize data transmission and control operations to this global clock, ensuring precise timing alignment across all components. The clock signal acts as a common reference that coordinates operations without requiring complex timing negotiation protocols, thereby achieving precise timing while maintaining interface design simplicity.
Data Source
AI summary
The disclosed inventions relate to the field of power control electronics. More specifically the disclosed inventions pertain to Power Stack Control Systems which are used to control the generation of AC power from a DC or AC input voltage. The disclosed Power Stack Control Systems include a serial interface connection, the serial interface connection being in serial electrical communication with a plurality of power stacks, the plurality of power stacks comprising at least one interface board and at least one IGBT driver board, the at least one interface board being in parallel communication with at least one IGBT driver board.