Modular and scalable technique for measurement of der/source parameters for multi-phase and multi-source system for ISE and metering applications

A system energy manager for use with a load center, the load center being structured to connect a plurality of loads to a plurality of voltage sources through a main bus, the plurality of voltage sources including a utility grid and a number of distributed energy resources, DERs, the system energy manager comprising:

• a system energy manager, SEM, controller, the SEM controller being configured to execute a source parameter measurement scheme, the source parameter measurement scheme including a number of signal generator modules, each signal generator module comprising:
• an internal control signal generator, ICSG, module;
• and
• a source parameter output, SPO, module,
• wherein, for each given voltage source in the plurality of power sources, the SEM controller is configured to receive a source voltage signal from the given voltage source,
• wherein the ICSG module is configured to receive the source voltage signal and a feedback frequency signal as input, with the feedback frequency signal having an angular frequency,
• wherein the angular frequency corresponds to a fundamental frequency of the source voltage signal, the fundamental frequency being in hertz,
• wherein the ICSG module is configured to output the source voltage signal and an internal control signal,
• wherein the SPO module is configured to generate a reference frame signal from the internal control signal and the source voltage signal, the reference frame signal having the angular frequency,
• wherein the SPO module is configured to extract source voltage parameters from the source voltage signal using the reference frame signal, and
• wherein the SPO module is configured to produce the feedback frequency signal using the internal control signal and the source voltage signal.