Flyback Power System Voltage Regulation via Periodic Switch Disable
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Solution Overview
Problem
Flyback power systems waste power by maintaining high voltage levels for unused loads during power-saving modes, degrading efficiency due to redundant energy retention.
Innovation Solution
A power system with a voltage regulator, capacitor, and switching signal generation unit that periodically disables energy transfer to reduce voltage levels and conserve power by controlling the switch control unit during energy transfer intervals, enhancing power efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the first output voltage is maintained at a high voltage level during power-saving operation mode, then the first load can be quickly powered when needed, but redundant power is wasted and power efficiency is degraded
Solution Approach 1:
The patent implements periodic action by disabling the switch control unit during specific energy transfer disable intervals, creating periodic cycles of energy transfer enable and disable states. This allows the system to periodically reduce the first voltage level during power-saving mode while maintaining the capability to quickly restore full power when needed, thus balancing readiness requirements with power efficiency.
2Stability of the object's composition
If the switch control unit is continuously enabled to maintain high voltage, then voltage stability is ensured, but power consumption increases
Solution Approach 1:
The patent applies dynamics by making the switch control unit's operational state variable rather than fixed. The unit dynamically switches between enabled and disabled states based on timing signals, allowing the system to adapt between full power mode and power-saving mode. This dynamic control enables voltage stability when needed while reducing power consumption during power-saving operation.
Solution Approach 2:
The patent implements preliminary action by pre-configuring the switch control unit to be controllable via timing signals that anticipate power-saving requirements. The system prepares for power-saving mode by enabling the timing signal generation mechanism in advance, allowing smooth transition to reduced power states while maintaining the ability to quickly restore full functionality when power demands change.
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
The solution significantly reduces power consumption and enhances power efficiency by enabling power-saving operations while maintaining stable output voltages for active loads.
Implementation Method 1
The transformer includes a primary winding for receiving an input voltage, a secondary winding, and an auxiliary winding
Implementation Method 2
The capacitor is electrically connected between the voltage input port of the voltage regulator and a voltage reference level
Implementation Method 3
The rectification unit, electrically connected between the secondary winding and the voltage input port of the voltage regulator, is employed to generate the first voltage
Data Source
AI summary
A power system having a power saving mechanism includes a voltage regulator, a power input module, and a switching signal generation unit. The voltage regulator performs a regulation operation on a first voltage for generating a second voltage. The power input module includes a transformer, a rectifying unit, a switch, and a switch control unit. The rectifying unit together with the transformer is put in use for converting an input voltage into the first voltage. The switch is employed to control a current flowing through the primary winding of the transformer. The switch control unit generates a control signal for controlling the switch according to a switching signal. The switching signal generation unit is utilized for generating the switching signal to disable the switch control unit during an energy transfer disable interval so as to decrease the first voltage from a first predetermined voltage to a second predetermined voltage.