Flywheel energy storage motor patent
Highly-efficient, low-loss motor generator accelerates and decelerates the flywheel. Our base EV charging unit provides 100 kWh of energy and 400kW power rating. Proof is in the power. 90% Round-Trip Efficiency. 90% of energy … - Download [PDF]
Revterra
Highly-efficient, low-loss motor generator accelerates and decelerates the flywheel. Our base EV charging unit provides 100 kWh of energy and 400kW power rating. Proof is in the power. 90% Round-Trip Efficiency. 90% of energy …
The Status and Future of Flywheel Energy Storage
The core element of a flywheel consists of a rotating mass, typically axisymmetric, which stores rotary kinetic energy E according to (Equation 1) E = 1 2 I ω 2 [J], where E is the stored kinetic energy, I is the flywheel moment of inertia [kgm 2], and ω is the angular speed [rad/s]. In order to facilitate storage and extraction of electrical energy, the rotor …
US Patent for Flywheel energy storage device with a hubless ring …
A flywheel based energy storage apparatus includes a housing and a hub-less flywheel mounted within the housing. The hub-less flywheel has a mass which is shifted radially outwards from a central axis of the hub-less flywheel thus increasing the energy density of the apparatus. The flywheel includes an outer axially extending annular surface, an inner axially …
High-voltage flywheel energy storage system
The high-voltage flywheel energy storage system prevents ionization, plasma formation, and electrical arc discharge by isolating the motor windings and motor end …
US20110298293A1
An energy storage system comprises a housing and a flywheel having a drive shaft portion attached to a cylindrical ferromagnetic rotor portion. The drive shaft portion defines a substantially vertical axis about which the rotor portion is mounted for rotation. A magnetic bearing assembly comprised of an annular permanent magnet having no electromagnetic components is …
Power Generating-type Flywheel Patents (Class 74/572.1)
Power Generating-type Flywheel Patents (Class 74/572.1) Structural detail, e.g., material, configuration, superconductor, discs, laminated, etc. (Class 74/572.11) Containing fiber or filament (Class 74/572.12) Flywheel energy storage device. Patent number: 12078221 Abstract: An example flywheel energy storage device includes a fiber-resin composite shell …
Flywheel based energy storage system
A compact energy storage system includes a high speed rotating flywheel and an integral motor/generator unit. The rotating components are contained within a vacuum enclosure to minimize windage losses. The flywheel rotor has a unique axial profile to both maximize the energy density of the flywheel and to maximize the volumetric efficiency of the …
Vacuum magnetic suspension flywheel energy-storage ...
The utility model discloses a vacuum magnetic suspension flywheel energy-storage power-generation device, which comprises a motor part and an energy storage part. The device is characterized in that the magnetic suspension energy storage part is composed of an annular inner magnet body (1) and an annular outer magnet body (2); and the motor part is composed …
US20110061953A1
In operation, the flywheel energy storage system may store energy, providing it as necessary to the vehicle''s drivetrain under certain conditions, for example, under rapid...
US4821599A
The steel alloy inertia energy storage flywheel that large-scale variable cross-section is connected without key CN105317924A (en) * 2015-11-09: 2016-02-10: : Large variable-cross-section alloy steel inertia energy storage flywheel free of key connection EP3460287A4 (en) * 2016-04-12: 2020-03-25: Kest Gmbh
US10112491B2
A hybrid/electric vehicle power management system in which an Inertial Storage and Recovery System (INSTAR) utilizes an enhanced Flywheel Energy Storage (FES) system to reach higher vehicle efficiencies. INSTAR allows regenerative braking energy surges to be readily stored at high efficiency on the flywheel, whose energy is then converted to power for driving the …
Speed control for a flywheel energy storage system
Accordingly, the invention provides a speed control for a flywheel energy storage system that provides accurate and reliable speed control for long-term operation. The speed control uses a current limiting means that safely limits the acceleration current to the motor for accelerating flywheel, and a rate controller that digitally switches the acceleration current on and off to …
OXTO Energy: A New Generation of Flywheel Energy Storage
Our flywheel will be run on a number of different grid stabilization scenarios. KENYA – TEA FACTORY. OXTO will install an 800kW flywheel energy storage system for a tea manufacturing company in Kenya. The OXTO flywheel will operate as UPS system by covering both power and voltage fluctuation and diesel genset trips to increase productivity ...
Simulation and analysis of high-speed modular flywheel energy storage ...
Flywheel Energy Storage System Layout 2. FLYWHEEL ENERGY STORAGE SYSTEM The layout of 10 kWh, 36 krpm FESS is shown in Fig(1). A 2.5kW, 24 krpm, Surface Mounted Permanent Magnet Motor is suitable for 10kWh storage having efficiency of 97.7 percent. The speed drop from 36 to 24 krpm is considered for an energy cycle of 10kWh, which
Energy Storage Flywheel
DESIGN AND DEVELOPMENT OF A 100 KW ENERGY STORAGE FLYWHEEL FOR UPS AND POWER CONDITIONING APPLICATIONS Patrick T. McMullen, Lawrence A. Hawkins, Co S. Huynh, Dang R. Dang CALNETIX 12880 Moore Street Cerritos, CA 90703 USA (pat@calnetix ) ABSTRACT The design and development of a low cost 0.71 KW-HR …
US6995529B2
A flywheel energy storage system ( 10 ) includes a vacuum enclosure ( 18 ) having a flywheel ( 12 ), motor/generator ( 14 ), and a shaft ( 16 ) enclosed within. The flywheel and motor/generator combination are designed to minimize bearing loads and …
CN114257036A
The invention discloses an energy storage flywheel, which comprises a shell, a rotor assembly and a motor assembly, wherein the shell is provided with a vacuum chamber, the rotor assembly is rotatably arranged in the vacuum chamber and comprises a shaft, a plurality of support rods and a carbon fiber ring, the carbon fiber ring is sleeved on the shaft, and the inner peripheral …
Flywheel energy storage system
The disclosure relates to a flywheel energy storage system including a casing, shaft, flywheel, and electric motor assembly. The casing has an inner vacuum …
CN114257036B
The invention discloses an energy storage flywheel, which comprises a shell, a rotor assembly and a motor assembly, wherein the shell is provided with a vacuum chamber, the rotor assembly is rotatably arranged in the vacuum chamber and comprises a shaft, a plurality of support rods and a carbon fiber ring, the carbon fiber ring is sleeved on the shaft, and the inner peripheral …
Power Generating-type Flywheel Patents (Class 74/572.1)
Flywheel energy storage device. Patent number: 12078221. Abstract: An example flywheel energy storage device includes a fiber-resin composite shell having an …
WO/2023/005950 FLYWHEEL ENERGY STORAGE SYSTEM
The flywheel energy storage system is connected to the power grid without needing to use a power electronic device, so that necessary voltage and frequency support …
Flywheel energy storage device and method of its use
a flywheel energy storage device was constructed according to the Example no. 5 and 6 except that this flywheel energy storage device is performed around the natural island where the coast of the island forms the basis for anchoring the stator 6. In case that the island has non-circular shape, the stator 6 can interfere with water level in some ...
US20210270345A1
Increasing the flywheel energy storage by adding mass becomes a challenge on three fronts. First, the flywheel energy storage capacity increases linearly with the increase in flywheel …
Flywheel energy storage for operating elevators
An elevator system, having a three phase rectifier (20) which converts energy from a three phase AC main (21) to provide DC power on a bus (19) to a three phase inverter (18) that drives a three phase inductive hoist motor (17), utilizes regenerated energy applied (46, 47) to a boost regulator (52) to drive (54, 55) a flywheel motor generator (26) to store the regenerated energy in the …
US20110175370A1
The Portable Multi-stack Flywheel Energy Storage Assembly stores energy from any electrical grid or other energy source such as wind turbines and photovoltaic solar power to a flywheel assembly. The invention is comprised of a motor/generator with a combination of multi-stacked flywheels, positive locking roller stops and speed activated clutches.
Grid-Scale Flywheel Energy Storage Plant
energy in the system as rotational energy, flywheel energy storage systems can moderate fluctuations in grid demand. When generated power exceeds load, the flywheel speeds up; when load exceeds generation, the flywheel is slowed to convert the energy for distribution. The plant will provide a response time of less than four seconds to frequency changes. With availability of …
The Next Frontier in Energy Storage | Amber Kinetics, Inc
As the only global provider of long-duration flywheel energy storage, Amber Kinetics extends the duration and efficiency of flywheels from minutes to hours-resulting in safe, economical and reliable energy storage. Amber Kinetics is committed to providing the most-advanced flywheel technology, backed by the industry''s most comprehensive protection plans. ×. Amber Kinetics …
US6897587B1
An optimized flywheel energy storage system utilizing magnetic bearings, a high speed permanent magnet motor/generator, and a flywheel member. The flywheel system is …
Analytics for US Patent No. 5614777, Flywheel based energy storage …
A compact energy storage system includes a high speed rotating flywheel and an integral motor/generator unit. The rotating components are contained within a vacuum enclosure to minimize windage losses. The flywheel rotor has a unique axial profile to both maximize the energy density of the flywheel and to maximize the volumetric efficiency of the …
RU2417504C1
FIELD: electricity. SUBSTANCE: super-flywheel energy storage comprises a motor-generator and a super-flywheel enclosed into a tight vacuumised shell. The motor-generator is arranged in the form of a double-disc stator and a disc rotor Y arranged between them with permanent magnets arranged on its surfaces, besides, value of air gap between the …
Patent for ''Kamma gear flywheel power generation''
The Kinetics Associated Mass Mechanical Applications (KAMMA) — heat, work and internal energy transfers from one object to another — are applied to KAMMA gear flywheel power generation method ...
Design of Motor/Generator for Flywheel Batteries
This article presents the design of a motor/generator for a flywheel energy storage at household level. Three reference machines were compared by means of finite …
CA3029381C
3 BRIEF DESCRIPTION OF DRAWINGS 100101 A brief introduction of the figures is below. 100111 Figure (FIG.) 1 is a simplified cross section view one embodiment of a flywheel energy storage system, also referred to as a flywheel unit. 100121 FIG. 2A shows the rotational elements of the embodiment of the flywheel unit of FIG. 1, including elements of an …
US6819012B1
A flywheel uninterruptible power supply has an energy storage flywheel supported in a low pressure containment vessel for rotation on a bearing system. A brushless motor/generator is coupled to the flywheel for accelerating and decelerating the flywheel for storing and retrieving energy. The flywheel is rotated in normal operation at a speed such that the generator voltage …