What are energy storage rotor forgings

How energy is stored in a flywheel rotor?

Energy is stored in a fast-rotating mass known as the flywheel rotor. The rotor is subject to high centripetal forces requiring careful design, analysis, and fabrication to ensure the safe operation of the storage device. 1. Introduction

What is a rotor & disk in a steam turbine?

THIS GROUP OF FORGINGS CONSTITUTES MAINLY the rotor and disk or wheel components used in steam and gas turbines and electrical generators. The integrity of these components is critical because they are generally large, rotate at high speeds, and in the case of steam turbines are confined under high pressure in steam chests.

What happened to rotor body forging?

The main rotor body forgings reached a crisis point in the mid-1950s. During a factory high-speed balance, a body forging failed catastrophically in the OEM’s balance facility. Fortunately, the failure occurred during night shift and few workers were in the plant. But the two young test engineers operating the facility were both killed.

What is energy storage Flywheel system?

Author to whom correspondence should be addressed. Energy storage flywheel systems are mechanical devices that typically utilize an electrical machine (motor/generator unit) to convert electrical energy in mechanical energy and vice versa. Energy is stored in a fast-rotating mass known as the flywheel rotor.

What affects the energy storage density of a flywheel rotor?

The energy storage density is affected by the specific strength of the flywheel rotor (the ratio of material strength to density σ / ρ). The allowable stress and density are both related to the material used in the flywheel.

How to design a flywheel rotor?

When designing a flywheel rotor, on the premise of meeting the energy storage capacity requirements, the designed flywheel should be compact in volume, light in weight, and low in cost. Specific energy storage for different rotor shapes has been considered, using the shape factor Ks defined as . (8) E m = K s σ max ρ