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Abstract

The disclosed invention is a distributed control system for operating a DC bus fed by disparate DC power sources that service a known or unknown load. The voltage sources vary in v-i characteristics and have time-varying, maximum supply capacities. Each source is connected to the bus via a boost converter, which may have different dynamic characteristics and power transfer capacities, but are controlled through PWM. The invention tracks the time-varying power sources and apportions their power contribution while maintaining the DC bus voltage within the specifications. A central digital controller solves the steady-state system for the optimal duty cycle settings that achieve a desired power supply apportionment scheme for a known or predictable DC load. A distributed networked control system is derived from the central system that utilizes communications among controllers to compute a shared estimate of the unknown time-varying load through shared bus current measurements and bus voltage measurements.

Patent Number

9,733,287

Assignee

Michigan Technological University, Houghton, MI (US)

Application Number

14/215,373

Date Filed

3-14-2017

Certificate of Correction

No

Issue Date

8-15-2017

Disciplines

Automotive Engineering | Mechanical Engineering

Distributed control system for parallel-connected DC boost converters

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