Augmented bus impedance and thump control for electrical power systems

A system comprising:

• a power generator configured to generate power for a plurality of electrical loads, wherein real and reactive power associated with one of the electrical loads oscillate at a low frequency and generate a thump condition, and wherein the low frequency is greater than 1 Hertz;
• a power distribution bus configured to receive and distribute the power from the power generator;
• a plurality of frequency converters connected in parallel on the power distribution bus, each frequency converter corresponding to one of the electrical loads, each frequency converter configured to convert a frequency of the power from the power generator to an output frequency associated with the corresponding electrical load and provide primarily real power to the corresponding electrical load;
• a flywheel configured to rotate in order to store inertial energy that is convertible to power one or more of the electrical loads;
• a doubly-fed induction machine (DFIM) coupled to the flywheel and comprising a plurality of DFIM tertiary winding ports, each DFIM tertiary winding port configured to provide leading reactive power to a corresponding one of the electrical loads, the DFIM configured to:
• reduce transmission impedance and reduce voltage drop on the power distribution bus in response to a change in power at one or more of the electrical loads;
• and
• extract energy associated with the thump condition from or return energy associated with the thump condition to the flywheel in order to reduce an impact of the thump condition on the power generator or the system;
• and
• a plurality of nodes, each node corresponding to one of the electrical loads, each node configured to combine the primarily real power from the corresponding frequency converter and the leading reactive power from the corresponding DFIM tertiary winding port.

A method comprising:

• generating power for a plurality of electrical loads using an electrical power generator;
• receiving the power at a power distribution bus and distributing at least some of the power for use at the electrical loads, wherein real and reactive power associated with one of the electrical loads oscillate at a low frequency and generate a thump condition, and wherein the low frequency is greater than 1 Hertz;
• converting, by a plurality of frequency converters, a frequency of the power from the electrical power generator to output frequencies associated with corresponding electrical loads and providing primarily real power to the corresponding electrical loads, the frequency converters connected in parallel on the power distribution bus, each frequency converter corresponding to one of the electrical loads;
• reducing transmission impedance on the power distribution bus using a doubly-fed induction machine (DFIM) in response to a demand in reactive power at one or more of the electrical loads;
• providing, via a plurality of DFIM tertiary winding ports, leading reactive power to corresponding ones of the electrical loads;
• rotating a flywheel coupled to the DFIM in order to store inertial energy and to buffer the electrical power generator from oscillations in power associated with one of the electrical loads;
• extracting energy associated with the thump condition from or returning energy associated with the thump condition to the flywheel via the DFIM in order to reduce an impact of the thump condition on the electrical power generator;
• and
• combining the primarily real power from the corresponding frequency converters and the leading reactive power from the corresponding DFIM tertiary winding ports at a plurality of nodes, each node corresponding to one of the electrical loads.