Current-Control Battery Power Distribution for Lower Loss Sharing
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Solution Overview
Problem
Conventional power distribution technologies face challenges in flexible control and efficient power sharing between sources, leading to limitations in reducing power loss during distribution.
Innovation Solution
A power management apparatus that includes a monitor unit to acquire storage battery status, a judgment unit to determine distribution duration and sources, and a control unit to manage power distribution between locations using current control type converters, enabling flexible control and reduced power loss.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If voltage control type converters are used for priority control, then power supply priority can be established, but detailed control of power sharing and efficient power supply becomes difficult
Solution Approach 1:
The patent changes the control parameter from voltage-based priority control to current-based proportional control. By using current control type converters, the system can dynamically adjust current distribution ratios among multiple power supply sources, enabling flexible power sharing while maintaining reliable supply. The control unit calculates optimal current distribution based on stored capacity ratios, transforming the control mechanism to achieve both reliability and adaptability.
2Reliability
If voltage control type converters are used, then power supply priority is maintained, but power loss reduction during distribution is limited
Solution Approach 1:
The patent switches from voltage control to current control, enabling proportional power distribution that minimizes transmission losses. By distributing power in proportion to stored capacities and controlling current flow optimally across multiple sources, the system reduces unnecessary high-current transmissions that cause I²R losses. This parameter change allows simultaneous operation of multiple power sources with optimized current allocation.
Solution Approach 2:
The system dynamically adjusts current distribution ratios based on real-time stored capacity measurements. Rather than fixed priority control, the current control type converters continuously adapt their output currents according to the proportional relationships among power supply sources, enabling optimal power flow that minimizes losses while maintaining supply reliability.
3Adaptability or versatility
If simultaneous power supply from multiple sources is implemented, then power distribution flexibility increases, but control complexity increases
Solution Approach 1:
The control unit receives feedback signals from current detectors monitoring each power supply source's output. Based on this feedback and the predetermined capacity ratios, the control unit adjusts the current control type converters to maintain proportional power distribution. This closed-loop feedback mechanism simplifies the control logic compared to complex voltage arbitration, as each source simply follows its proportional current reference.
Data Source
AI summary
Provided is a power management apparatus for controlling power distribution from a location that includes a storage battery and a current control type converter to another location that includes a storage battery, the power management apparatus including: a monitor unit that acquires a status of the storage battery at each location; a judgment unit that determines, based on the status of the storage battery at each location that has been acquired by the monitor unit, a duration of power distribution to a certain location, and one or more locations from which power is to be distributed to the certain location; and a control unit that controls each location serving as a distribution source such that power distribution is performed for the duration determined by the judgment unit.