AC DC POWER CIRCUITS DESIGN BY MICROSYSTEM CRITERIA

Innovation in the residential and commercial LV distribution for the near future it is necessary to effectively implement the objectives of improvements of energy savings and renewable energy and further developments, such as DC distributions. Microsystem criteria in designing AC and DC power circuits consist in modeling their structure with components of smaller size, in grouping adequately the supplying loads, in adopting circuit with conductors in bunch, in loop or in rope designs. "Natural" parameters like steady and transient current density and load current moment density are introduced to support the configuration of circuits and the sizing of conductor cross-section area especially for DC circuits adopting nominal voltages lower than AC circuits.