Solid state energy storage and management system
Systems and methods for energy storage and management may be useful for a variety of applications, including launch devices. A system can include a direct current (DC) bus configured to operate within a predetermined range of voltages. The system can also include an array comprising a plurality of ultra-capacitors connected to the DC bus and configured to supply the DC bus with energy. The system can further include an input configured to receive energy from a power grid, wherein the power grid is configured to supply fewer than 250 amps of power. The system can additionally include an output configured to supply more than 250 amps of power. The system can also include a controller configured to control charging and discharging of the array of ultra-capacitors and configured to control the DC bus to remain within the predetermined range of voltages.
1. A system, comprising:
at least one stator configured to impart motive force to at least one permanent magnet attached to a vehicle by applying a magnetic field from the at least one stator to the at least one permanent magnet to propel the vehicle, wherein the at least one stator is not physically connected to the vehicle; and
at least one cabinet housing not physically connected to the vehicle, the at least one cabinet housing comprising:
a direct current (DC) bus;
an input to the DC bus configured to receive power from a power grid, the power grid not physically connected to the vehicle;
an output configured to supply power having more than 250 amps to an alternating current (AC) power supply for operating the at least one stator;
an array of ultra-capacitors comprising a plurality of ultra-capacitors connected in series-parallel, the array of ultra-capacitors connected to the DC bus and configured to continuously receive power from the power grid via the input and the DC bus during operation of the vehicle, wherein the array of ultra-capacitors is connected to the output and configured to provide power to the output, the array of ultra-capacitors not physically connected to the vehicle; and
a controller configured to control the charging and discharging of the array of ultra-capacitors so the array of ultra-capacitors does not discharge more than 80% of the fully charged capacity of the array of ultra-capacitors.
2. The system of claim 1 , wherein the vehicle is on a track.
3. The system of claim 1 , wherein the stator comprises at least one stator coil of a linear motor.
4. The system of claim 3 , wherein the linear motor comprises at least one of a linear synchronous motor or a linear induction motor.
5. The system of claim 1 , further comprising a recycling system comprising an energy input for supplying energy to the array of ultra-capacitors via the DC bus.
6. The system of claim 1 , further comprising a regenerative braking circuit obtaining power from magnetic braking of the vehicle on a closed track.
7. The system of claim 6 , wherein the magnetic braking is eddy current braking utilizing an air gap and the stator.
8. A method, comprising:
supplying power from a power grid to at least one cabinet housing comprising an input to a direct current (DC) bus;
continuously supplying power from the power grid via the input and the DC bus to an array of ultra-capacitors connected to the DC bus during operation of a vehicle, the array of ultra-capacitors comprising a plurality of ultra-capacitors connected in series-parallel, wherein the least one cabinet housing comprises the array of ultra-capacitors, wherein the at least one cabinet housing is not physically connected to the vehicle, the power grid is not physically connected to the vehicle, and the array of ultra-capacitors not physically connected to the vehicle;
controlling the charging and discharging of the array of ultra-capacitors to supply power from the array of ultra-capacitors to an output connected to the array of ultra-capacitors and so the array of ultra-capacitors does not discharge more than 80% of the fully charged capacity of the array of ultra-capacitors, wherein the at least one cabinet housing comprises the output; and
supplying power having more than 250 amps from the output to an alternating current (AC) power supply to operate at least one stator to impart motive force to at least one permanent magnet attached to the vehicle by applying a magnetic field from the at least one stator to the at least one permanent magnet to propel the vehicle, wherein the at least one stator is not physically connected to the vehicle.
9. The method of claim 8 , wherein the vehicle is on a track.
10. The method of claim 8 , wherein the stator comprises at least one stator coil of a linear motor.
11. The method of claim 10 , wherein the linear motor comprises at least one of a linear synchronous motor or a linear induction motor.
12. The method of claim 8 , further comprising supplying, by a recycling system comprising an energy input, energy to the array of ultra-capacitors via the DC bus.
13. The method of claim 8 , further comprising obtaining power from magnetic braking of the vehicle by a regenerative braking circuit.
14. The method of claim 13 , wherein the magnetic braking is eddy current braking utilizing an air gap and the stator.