Resonant motor system
AssigneeRaser Technologies, Inc.
InventorJack H. Kerlin
Life of this patent
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Abstract
In a resonant motor system, an electrical motor having a stator with one or more windings, a rotor which may or may not be wound, and an air gap between the stator and the rotor for storing magnetic energy such that the motor exhibits a definite electrical inductance may be deployed with a drive combination including a capacitance connected in series with the inductance of the motor to form an LCR circuit therewith. Phased provision of DC power to the LCR circuit causes the circuit to oscillate, which excites the motor. The DC power is provided in synchronism with the rotation of the rotor in order to maximize torque produced by the motor.
Claims32
An electrical motor system, comprising:
- a motor having a stator with one or more stator coils, a rotor, and a gap between the stator and the rotor for storing magnetic energy;
- and
- a discharge capacitor connected in series with at least one stator coil to form an LCR circuit therewith.
An electrical motor system, comprising:
- a motor having a stator with one or more stator coils, a rotor, and a gap between the stator and the rotor for causing the motor to exhibit the characteristics of an inductor;
- and
- a discharge capacitor connected to the motor to form an osillatory circuit therewith.
An electrical motor system comprising:
- an electrical motor with a stator having at least one stator coil, a rotor, and a gap between the stator and the rotor;
- a discharge capacitor connected in series with the stator coil;
- a first switch connected in series with the discharge capacitor and the stator coil to discharge the capacitor in a first direction;
- and,
- a second switch connected in series with the discharge capacitor and the stator coil to discharge the capacitor in a second direction.
An electrical motor system, comprising:
- an electrical motor having the characteristics of an inductor;
- the electrical motor including a rotor;
- a drive with discharge capacitance connected to the electrical motor to form a resonant circuit therewith;
- and
- at least two switches in the drive responsive to rotation of the rotor for switching power through the resonant circuit to excite the electrical motor.
A drive for a resonant motor system, comprising:
- a discharge capacitance for being connected in series with at least one coil of an electrical motor to form an LCR circuit therewith;
- and
- at least two switches connected to the discharge capacitance for exciting the electrical motor by causing the LCR circuit to oscillate.
A single-phase resonant motor system, comprising:
- a motor having a stator with a stator coil, a rotor, and a gap between the stator and rotor for storing magnetic energy;
- a discharge capacitor connected in series with the stator coil to form an LCR circuit therewith;
- a first switch connected in series with the discharge capacitor and the stator coil to discharge the capacitor in a first direction;
- and,
- a second switch connected in series with the discharge capacitor and the stator coil to discharge the capacitor in a second direction.
A multi-phase resonant motor system, comprising:
- a motor having a stator with at least two stator coils, a rotor, and a gap between the stator and rotor for storing magnetic energy;
- a discharge capacitor connected in series with each of the stator coils to form an LCR circuit therewith;
- and
- each of the stator coils having associated therewith:
- a first switch connected in series with the discharge capacitor and the stator coil to discharge the capacitor in a first direction;
- and,
- a second switch connected in series with the discharge capacitor and the stator coil to discharge the capacitor in a second direction.
A three-phase resonant motor system, comprising:
- a motor having a stator with at least three stator coils, a rotor, and a gap between the stator and rotor for storing magnetic energy;
- a discharge capacitor connected in series with each of the stator coils to form an LCR circuit therewith;
- a first switch connected in series with the discharge capacitor and a first stator coil to discharge the capacitor in a first direction, and a second switch connected in series with the discharge capacitor and the first stator coil to discharge the capacitor in a second direction;
- a third switch connected in series with the discharge capacitor and a second stator coil to discharge the capacitor in the first direction, and a fourth switch connected in series with the discharge capacitor and the second stator coil to discharge the capacitor in the second direction;
- and
- a fifth switch connected in series with the discharge capacitor and a third stator coil to discharge the capacitor in the first direction, and a sixth switch connected in series with the discharge capacitor and the third stator coil to discharge the capacitor in the second direction.
A two-phase resonant motor system, comprising:
- a motor having a stator with two stator coils, a rotor with two rotor coils, and a gap between the stator and rotor for storing magnetic energy;
- a discharge capacitor connected in a first series with a first stator coil and a first rotor coil to form an LCR circuit therewith, and connected in a second series with a second stator coil and a second rotor coil to form an LCR circuit therewith;
- a first switch connected in the first series to discharge the discharge capacitor in a first direction;
- and,
- a second switch connected in the second series to discharge the discharge capacitor in a second direction.
Dependencies are inferred from the claim text.