Power Source Device Intermittent Control Efficiency
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Solution Overview
Problem
In digital control power sources using insulating transformers, efficiency in low load states needs improvement, and there is a requirement for continuous operation of controllers on the primary side during low load conditions.
Innovation Solution
A power source device with a transformer, switching elements, and a controller that enables continuous and intermittent control modes, where the calculating portion is dormant during rest periods and the measuring portion resumes operations after a predetermined time to initiate switching periods, ensuring continuous operation and improved efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If intermittent control is implemented in low load state, then power source efficiency is improved, but controller operation continuity is compromised
Solution Approach 1:
The controller is segmented into two distinct functional portions: a calculating portion that can be stopped during rest periods to reduce power consumption, and a measuring portion that continues operating to maintain controller functionality. This segmentation allows the system to achieve intermittent control for efficiency while preserving operational continuity through the always-on measuring portion.
Solution Approach 2:
The controller dynamically adjusts its operational state by switching between continuous operation and intermittent control modes. During low load states, the system transitions to intermittent control where the calculating portion is periodically stopped, creating a dynamic power management strategy that balances efficiency gains with operational requirements.
2Reliability
If calculating portion operates continuously, then controller functionality is maintained, but power consumption increases
Solution Approach 1:
The controller is divided into calculating and measuring portions, allowing selective operation. The calculating portion consumes power during active control tasks but can be stopped during rest periods, while the measuring portion uses minimal continuous power to maintain system awareness and readiness, thereby reducing overall power consumption while preserving functionality.
Solution Approach 2:
The calculating portion operates periodically rather than continuously, executing calculations during switching periods and remaining dormant during rest periods. This periodic operation pattern significantly reduces average power consumption while the measuring portion continuously monitors system state, ensuring functionality is maintained without sustained high power usage.
3Use of energy by moving object
If rest period is extended, then power consumption is reduced, but response time increases
Solution Approach 1:
The measuring portion performs preliminary monitoring and detection during rest periods, preparing the system for quick resumption of full operation. By continuously measuring and maintaining system awareness even when the calculating portion is dormant, the system minimizes the effective response time penalty that would otherwise result from extended rest periods.
Solution Approach 2:
The measuring portion provides continuous feedback about system state during rest periods, enabling the controller to detect when load conditions change and when switching periods should be triggered. This feedback mechanism ensures that extended rest periods do not result in delayed responses to actual load changes, as the system remains aware of its operating conditions throughout the rest period.
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 solution enhances power source efficiency in low load states and maintains continuous operation of the controller, reducing power consumption and extending rest periods without compromising performance.
Implementation Method 1
a transformer including a primary winding and a secondary winding
Data Source
AI summary
A power source device includes a transformer including a primary winding and a secondary winding; a switching element for enabling or disabling supply of electric power to the primary winding by a switching operation; a controller for controlling the switching operation, wherein the controller is capable of effecting continuous control in which the switching operation is continued and intermittent control in which a switching period in which the switching operation is performed and a rest period in which the switching operation is at rest are repeated, a calculating portion not operating in the rest period; and a measuring portion continuing operation even in the rest period. When a predetermined time has elapsed from a start of the rest period, the measuring portion causes the calculating portion to resume the operation thereof, and starts the switching period.