POWER MANAGEMENT CONCEPT IN DC DISTRIBUTED SYSTEMS

摘要

#$%^&*AU2017200652A120180816.pdf#####POWER MANAGEMENT CONCEPT IN DC DISTRIBUTED SYSTEMS ABSTRACT OF THE DISCLOSURE A system and method to interconnect several conventional or alternative power generators, loads, and/or energy storage elements physically separated from each other in a DC distribution system. The method includes the steps of providing a common DC bus to interconnect all of the elements in the DC distributed system using power converters. A first group of one or more of the 5 elements (main element) is used to automatically maintain the voltage of the DC link following a set a set point to provide for the load matching. The average DC link voltage (set point) maintained by the main element is intentionally changed in order to indicate all of the other elements connected to the DC bus how they need to modify their power generation or consumption.DC-LINK Runs at 26 kW - DC/DC CONV +DC/DC CONTROLLING CONV. DC-LINKF Wind Field ENERGY STORAGE v. v., DC-link Voltage M CN.CoNV LOADS Microturbine av. v. DC-link Voltage ::O _DC/DC DC/DC Fuel Cell Diesel Generators v~ v v, DC-link Voltage DC-link Voltage PV DC/DC Array CONV. v. v., DC-link Voltage Figure 1. Example of a Micro-grid using the variable DC-link voltage concept