SYSTEMS AND METHODS FOR UNINTERRUPTIBLE POWER SUPPLIES WITH GENERATORS

1 . A electrical power system, comprising:

a multiport power converter, comprising a plurality of electrical ports, each having at least two lines, and an energy transfer reactance comprising an inductor and a capacitor in parallel, wherein each line of each said port is connected to multiple ends of said energy transfer reactance through multiple respective bidirectional switches;

a battery bank connected to a first one of said ports;

an AC power source connected to a second one of said ports;

a third one of said ports being connected to supply power to an AC power grid or microgrid; wherein said AC power source does not operate synchronously with the AC power grid or microgrid;

wherein said converter draws power from said first, second, and/or third ports, and drives power into said first and/or third ports,

while changing the frequency and/or phase of power received at said second port to thereby provide power synchronously to said third port when needed.

2 . The electrical power system of claim 1 , wherein the third port is connected to said multiport power converter through switchgear.

3 . The electrical power system of claim 1 , wherein said AC power source is a wind-driven power source.

4 . The electrical power system of claim 1 , wherein said AC power source is a combustion-driven power source.

5 . A system for providing an uninterruptible power supply, comprising:

a bidirectional multiport power converter, comprising:

a plurality of input/output portals, each comprising one or more ports;

an energy transfer reactance comprising an inductor and a capacitor in parallel, wherein each said port of each said input/output portal is connected in parallel to each end of the energy transfer reactance by a pair of bidirectional switching devices;

wherein, at various times, the energy transfer reactance can be connected to two said ports, to transfer energy therebetween; and

wherein, at various times, said energy transfer reactance can be disconnected from said input/output portals;

an asynchronous AC power source connected to a first input/output portal of the bidirectional multiport power converter supplying converted synchronous AC power to an AC grid, said AC grid connected to a second input/output portal of said bidirectional multiport power converter;

at least one DC power source connected to a third input/output portal of said bidirectional multiport power converter supplying converted synchronous AC power to said AC grid and said bidirectional multiport power converter operated to supply power from the at least one DC power source when consumption from said AC grid exceeds production from said first input/output portal to level with peak voltage demand thus optimizing power generation from said first input/output portal; and

wherein said AC power source comprises a combustion engine-driven generator operated to supply converted synchronous AC power to said AC grid.

6 . The system for providing an uninterruptible power supply of claim 5 , further comprising:

a photovoltaic array comprising said at least one DC power source, wherein the photovoltaic array can perform dynamic braking of the combustion engine-driven generator from said first input/output portal during an AC grid power outage.

7 . The system for providing an uninterruptible power supply of claim 5 , further comprising:

a bank of batteries comprising said at least one DC power source, wherein said bank of batteries can perform dynamic braking of said combustion engine-driven generator from said first input/output portal during an AC grid power outage.

8 . The system for providing an uninterruptible power supply of claim 5 , further comprising:

a bank of batteries comprising said at least one DC power source, wherein said combustion engine-driven generator can supply converted DC power to charge said bank of batteries when power generated by said combustion engine-driven generator exceeds power consumption by said AC grid.

9 . The system for providing an uninterruptible power supply of claim 5 , wherein said AC grid connected to said second input/output portal further comprises a microgrid comprised of an AC panel coupled to said second input/output portal connected to a critical loads and an AC disconnect, and said AC grid connected to said AC disconnect.

10 . The system for providing an uninterruptible power supply of claim 9 , further comprising:

said AC grid provides AC power to said critical loads during normal operation; and

AC disconnect switches to open position during AC grid faults isolating said AC grid, with said first input/output portal used to provide converted synchronous AC power to said critical loads from said combustion engine-engine generator.

11 . The system for providing an uninterruptible power supply of claim 9 , further comprising:

said AC grid provides AC power to said critical loads during normal operation; and

AC disconnect switches to open position during AC grid faults isolating said AC grid, with said third input/output portal used to provide converted synchronous AC power to said critical loads from said at least one DC power source.

12 . The system for providing an uninterruptible power supply of claim 5 , wherein said at least one DC power source comprises:

a bank of batteries; or

a photovoltaic array.

13 . A method for providing an uninterruptible power supply, comprising:

using a bidirectional multiport power converter, comprised of:

a plurality of input/output portals, each comprising one or more ports;

an energy transfer reactance comprising an inductor and a capacitor in parallel, wherein each of the ports of each of the input/output portals is connected in parallel to each end of the energy transfer reactance by a pair of bidirectional switching devices;

wherein, at various times, the energy transfer reactance can be connected to two of the ports, to transfer energy there between; and

wherein, at various times, the energy transfer reactance can be disconnected from the input/output portals;

connecting an asynchronous AC power source to a first input/output portal of the bidirectional multiport power converter supplying converted synchronous AC power to an AC grid, the AC grid connected to a second input/output portal of the bidirectional multiport power converter;

connecting at least one DC power source to a third input/output portal of the bidirectional multiport power converter supplying converted synchronous AC power to the AC grid;

controlling the bidirectional multiport power converter to transfer power from the at least one DC power source when consumption from the AC grid exceeds production from first input/output portal to level with peak voltage demand thus optimizing power generation from first input/output portal; and

wherein the AC power source comprises a combustion engine-driven generator operated to supply converted synchronous AC power to the AC grid.

14 . The method for providing an uninterruptible power supply of claim 13 , further comprising:

using a photovoltaic array as the DC power source, wherein the bidirectional multiport power converter transfers power to the photovoltaic array to provide dynamic braking of the combustion engine-driven generator from the first input/output portal during an AC grid power outage.

15 . The method for providing an uninterruptible power supply of claim 13 , further comprising:

using a bank of batteries as the DC power source, wherein the bidirectional multiport power converter transfers power to the bank of batteries to provide dynamic braking of the combustion engine-driven generator from first input/output portal during an AC grid power outage.

16 . The method for providing an uninterruptible power supply of claim 13 , further comprising:

a bank of batteries comprising the at least one DC power source, wherein the bidirectional multiport power converter transfers power from the combustion engine-driven generator to supply converted DC power and charge the bank of batteries.

17 . The method for providing an uninterruptible power supply of claim 13 , wherein the AC grid connected to a second input/output portal further comprises a microgrid comprising an AC panel coupled to second input/output portal connected to a critical loads and an AC disconnect, and the AC grid connected to the AC disconnect.

18 . The method for providing an uninterruptible power supply of claim 17 , further comprising:

providing AC power with the AC grid to critical loads during normal operation; and

switching AC disconnect to open position during AC grid faults to isolate the AC grid, with the first input/output portal used by the bidirectional multiport power converter to transfer converted synchronous AC power to the critical loads from the combustion engine-engine generator.

19 . The method for providing an uninterruptible power supply of claim 17 , further comprising:

providing AC power with the AC grid to critical loads during normal operation; and

switching AC disconnect to open position during AC grid faults to isolate the AC grid, with third input/output portal used by bidirectional multiport power converter to transfer converted synchronous AC power to the critical loads from the at least one DC power source.

20 . The method for providing an uninterruptible power supply of claim 13 , wherein the at least one DC power source comprises:

a bank of batteries; or

a photovoltaic array.

21 - 38 . (canceled)