Method for energy storage for load hoisting machinery
US5936375A · kind A · utility
25Cited by
1References
3Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 31, 1998 |
| Grant date | Aug 10, 1999 |
| Priority date | — |
| Expiry date | Jul 31, 2018 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/16
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A method for energy storage and recovery for load hoisting equipment driven by an inverter controlled first induction motor and having a second inverter controlling a second induction motor which drives a flywheel whereby, utilizing rest power such as reverse power from the first induction motor when lowering a load and unused power at small load or idle to accelerate rotation of a flywheel, whereby energy is stored, and the system is reversed when a load is lifted and power is consumed whereby the flywheel causes the second motor to generate power and deliver it to the first motor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.