Parallel Power System Wake-Up Bus Efficiency
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Solution Overview
Problem
Power systems with multiple devices in parallel face inefficiencies due to varying load conditions, particularly in mobile communication base stations where power consumption is lower at night, leading to prolonged operation at low efficiency, and existing control strategies struggle to enhance efficiency beyond a certain point.
Innovation Solution
A power system with a wake-up bus and control units that dynamically adjust the operation mode of power devices by monitoring load conditions and using AND logic operations to synchronize wake-up signals, allowing devices to enter standby mode during low load periods, optimizing power supply efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple power devices are connected in parallel to form a redundant power system, then system reliability is improved, but power efficiency deteriorates during light load conditions
Solution Approach 1:
The patent implements dynamic power device management where devices can switch between operation mode and standby mode based on real-time load conditions. The control unit dynamically adjusts the number of active power devices according to the actual power demand, allowing the system to adapt its configuration from full parallel operation to reduced operation, thereby maintaining high efficiency during light load while preserving reliability through available standby devices
Solution Approach 2:
The system changes the operational parameters of power devices by transitioning them between different modes (operation mode and standby mode). The control unit monitors load conditions and adjusts the operational state of individual devices, changing parameters such as device activation status and power output levels to optimize the balance between reliability and energy efficiency
2Reliability
If power devices operate in parallel during light load conditions, then system redundancy is maintained, but power consumption increases
Solution Approach 1:
The patent applies partial action by activating only the necessary number of power devices based on actual load requirements rather than keeping all devices in parallel operation. During light load conditions, only one or a few devices operate while others remain in standby, consuming minimal energy while still providing redundancy. This partial activation strategy eliminates excessive power consumption associated with running all devices at low load
3Loss of energy
If control technology and semiconductor device efficiency optimization are advanced, then power efficiency improves, but system complexity increases
Solution Approach 1:
The patent segments the power system into independent controllable units with distinct operation modes. Each power device is divided into operational and standby states, and the control function is segmented into load monitoring and device state management. This segmentation simplifies the control strategy by treating each device independently rather than managing the entire system as a complex integrated unit, reducing overall control complexity while maintaining efficiency
Data Source
AI summary
A power system including power devices connected in parallel and a wake-up bus is provided. Each power devices includes a wake-up signal pin, a power unit and a control unit. The control unit controls a logic level of the wake-up signal pin based on an operation status of the power unit. The AND logic operation performed on the logic level of the wake-up signal pin of each of the power devices results in the logic level of the wake-up bus. The control unit of each of the power devices monitors the logic level of the wake-up bus. When the logic level of the wake-up bus is at a second logic level, at least one power device under a standby mode is switched to an operation mode.