Distributed Power Control Timing for Synchronized State Transitions
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Solution Overview
Problem
In distributed power supply systems, controlling devices such as solar batteries, storage batteries, and electric vehicle chargers to start operating simultaneously is challenging due to variations in communication delay and operation delay times, which can differ based on device type, previous operation states, and environmental conditions, making it difficult to implement precise timing for state transitions from a cloud environment.
Innovation Solution
A control apparatus dynamically estimates and predicts operation delay times for each device, considering communication and operation delays, by using a calculator to calculate estimated values and adjust control command transmission timing, ensuring accurate state transitions at designated times, even for devices of different types and models.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If control commands are transmitted to distributed devices simultaneously, then the system structure remains simple, but the devices fail to operate at the same time due to variations in communication and operation delay times
Solution Approach 1:
The control apparatus calculates estimated operation delay times in advance for each device based on their operation states, and uses these pre-calculated values to determine the optimal transmission timing for control commands. This preliminary calculation enables synchronized operation without requiring complex real-time adjustment mechanisms.
Solution Approach 2:
The system applies different delay time compensations to different devices based on their individual characteristics and operation states. Each device receives a customized control command transmission timing tailored to its specific operation delay characteristics, rather than a uniform approach for all devices.
2Manufacturing precision
If the control system compensates for delay variations individually for each device, then timing precision improves, but the control system complexity increases
Solution Approach 1:
The control apparatus dynamically adjusts the transmission timing parameter of control commands based on calculated operation delay times. By changing the timing parameter according to each device's characteristics, the system achieves precise synchronization without adding physical complexity to the control structure.
Solution Approach 2:
The system replaces complex mechanical or hardware synchronization mechanisms with software-based delay calculation and timing adjustment. The control apparatus uses computational methods to predict and compensate for delays, substituting physical synchronization infrastructure with intelligent timing control.
3Productivity
If control commands are sent without considering operation delay times, then the control process is simple and fast, but the devices transition to desired states at different times reducing system efficiency
Solution Approach 1:
The control apparatus performs preliminary calculation of operation delay times before transmitting control commands. This advance preparation eliminates the need for retransmission or waiting, allowing devices to transition to desired states simultaneously and efficiently without causing operational delays.
Solution Approach 2:
The system uses feedback from device operation states to calculate accurate delay times. By monitoring how long devices take to transition between states and using this information to adjust future command timing, the system minimizes time loss while maintaining high operational efficiency.
Data Source
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AI summary
A control apparatus (100) includes a device controller (101), a calculator (102), and a communication controller (103). The device controller (101) generates a command for controlling operation of an intended device (300; 300-2). The calculator (102) calculates an estimated value of an operation delay time according to classification information representing at least one of a type of the command and a type of a state transition of the device in operation following the command. The operation delay time is a length of time from when the device receives the command to when the device completes a state transition after the operation following the command. The communication controller (103) transmits the command to the device so that the device completes the state transition after the operation following the command at time adjusted in accordance with the estimated value.