Power Electronics Device Dynamic Master-Slave Role Assignment
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Solution Overview
Problem
Conventional power electronics systems face challenges in dynamically determining master/slave roles among multiple devices, leading to improper phase synchronization control and difficulty in maintaining throughput and flexibility, especially during initial installation and abnormal conditions such as blackouts.
Innovation Solution
A power electronics device with a connector, power controller, connection detection processor, and collision monitor that automatically detects connected devices and manages signal collisions to determine master/slave relationships dynamically, ensuring proper synchronization and operation even in abnormal conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple power electronics devices operate in parallel with dynamic master/slave determination, then system flexibility and throughput are improved, but the risk of multiple masters existing simultaneously increases causing improper phase synchronization control
Solution Approach 1:
The system performs preliminary actions by detecting device connections and determining master/slave roles before actual parallel operation begins. The connection detection processor identifies which devices are connected, and the master determination processor assigns roles in advance, ensuring only one master exists before synchronization control starts, thus preventing the harmful condition of multiple simultaneous masters.
Solution Approach 2:
The system implements feedback mechanisms where the connection detection processor continuously monitors device connections and reports to the master determination processor. This feedback loop ensures that when devices are added or removed from parallel operation, the master/slave configuration is automatically updated, maintaining proper synchronization control while allowing system flexibility.
2Reliability
If conventional fixed master/slave roles are used, then phase synchronization control is stable, but system flexibility and adaptability to abnormal conditions are reduced
Solution Approach 1:
The system transitions from static fixed master/slave roles to dynamic role assignment. The master determination processor continuously evaluates connection status and automatically adjusts which device serves as master based on current system conditions. This dynamic approach maintains stable synchronization control while adapting to abnormal conditions such as device failures or blackouts, thereby improving both reliability and flexibility.
Solution Approach 2:
The system implements self-service through automatic master determination without requiring manual configuration. When devices connect to the parallel operation system, they automatically detect connections and determine their roles through communication protocols. This self-organizing capability enables the system to adapt to changes in configuration and abnormal conditions while maintaining proper synchronization control.
3Ease of operation
If devices separately operate during initial installation, then device independence is maintained, but multiple masters may exist causing control conflicts
Solution Approach 1:
The system merges separate device operations into a coordinated multi-device operation through the connection detection processor. When devices are initially installed and connect to the system, the processor detects their presence and facilitates communication between them. The master determination processor then coordinates role assignment, ensuring that while devices operate independently in terms of physical connection, they are logically coordinated to prevent multiple masters, thus resolving control conflicts.
Data Source
AI summary
According to one embodiment, there is provided a power electronics device including: a connector connected to a power line; a power controller; a connection detection processor; and a collision monitor. The power controller performs at least one of generating an electric signal to the power line and detecting an electric signal on the power line via the connector. The connection detection processor performs a connection detection process with use of the power controller to detect another power electronics device connected to the power line. The collision monitor monitors whether or not collision of electric signals occurs on the power line during the connection detection process and controls the connection detection processor according to a monitoring result of whether or not the collision of electric signals occurs.