Axially gapped electrostatic machine having drive structure configured to recycle charge
Systems, devices, and methods for an electrostatic machine are provided. In one embodiment, an electrostatic machine may be configured to have an electric field motor, a rotor assembly and a motor drive, wherein the improvement may include generating at least three watts (3 W) of power with a product of a gap pressure (p gap ) and a gap distance (d gap ) of less than ninety megapascals-micrometer (90 MPa*um).
1. An electrostatic machine comprising:
an electric field motor including:
a plurality of stator members, wherein each of the plurality of stator members includes a plurality of electrically conductive petals, wherein the plurality of electrically conductive petals of each of the plurality of stator members forms a plurality of electrically isolated poles with each of the plurality of electrically isolated poles coupled to one of a plurality of voltage phases of a voltage source;
a rotor assembly including:
a rotor member having a plurality of electrically isolated conductive petals; and
a shaft member secured to the rotor member; and
a motor drive having a charge recycle structure such that the motor drive is configured to output electrical power by continuously removing and repositioning charge among the plurality of electrically isolated poles,
wherein the rotor assembly is rotated upon application of charges to at least some of the plurality of electrically isolated poles from the voltage source.
2. The electrostatic machine of claim 1 , wherein the electrostatic machine uses at least ten (10) petals on each rotor member and each stator member of the electrostatic machine.
3. The electrostatic machine of claim 1 , wherein at least one of the plurality of electrically conductive petals of the plurality of stator members has a coating, wherein the coating is used to alter a voltage breakdown characteristic.
4. The electrostatic machine of claim 1 , further comprising a gap medium positioned in a gap residing between each of the plurality of stator members and the rotor member.
5. The electrostatic machine of claim 1 , wherein the plurality of electrically isolated poles is at least eight poles per voltage phase.
6. An electrostatic machine comprising:
an electric field motor including:
a plurality of stator members, wherein each of the plurality of stator members includes a plurality of electrically conductive petals, wherein the plurality of electrically conductive petals of each of the plurality of stator members forms a plurality of electrically isolated poles with each of the plurality of electrically isolated poles coupled to one of a plurality of voltage phases of a voltage source;
a rotor assembly including:
a rotor member having a plurality of electrically isolated conductive petals; and
a shaft member secured to the rotor member; and
a motor drive having a charge recycle structure configured to cycle charge via a sequence of operations between the motor drive and the plurality of electrically isolated poles, the sequence of operations comprising repeatedly removing and replacing charge among the plurality of electrically isolated poles,
wherein the rotor assembly is rotated upon application of charges to at least some of the plurality of electrically isolated poles from the voltage source.
7. The electrostatic machine of claim 6 , wherein, the electrostatic machine has a product of a gap pressure (p gap ) and a gap distance (d gap ) of less than ninety megapascals-micrometer (90 MPa *μm).
8. The electrostatic machine of claim 6 , wherein the sequence of operations between the motor drive and the plurality of electrically isolated poles operates independent of the voltage source except for an initial charging and a replenish charging to compensate for any charge dissipation.