Title:
GENERALIZED FREQUENCY CONVERSION SYSTEM FOR STEAM TURBINE GENERATOR UNIT
Document Type and Number:
WIPO Patent Application WO/2017/177612
Kind Code:
A1
Abstract:
Disclosed is a generalized frequency conversion system for a steam turbine generator unit, the system comprising at least a steam turbine (T) with an adjustable rotational speed, a water feeding pump (BFP), a generator (G), a speed increasing gearbox (GB), a frequency conversion bus (a, c) and an auxiliary machine connected thereto. With a change in load of the unit, parameters of steam entering the steam turbine (T) and an extracted steam flux are correspondingly regulated (changed), so that the rotational speed of the steam turbine (T) changes correspondingly; and thus, the rotational speed of the water feeding pump (BFP) is changed via the speed increasing gearbox (GB) on the one hand, and on the other hand the frequency of an alternating current output by the generator (G) is changed. There is no need to additionally provide other types of frequency converters in the generalized frequency conversion system, so the system is simple, reliable, low in cost, and high in efficiency.
Inventors:
FENG WEIZHONG (CN)
Application Number:
PCT/CN2016/098827
Publication Date:
October 19, 2017
Filing Date:
September 13, 2016
Export Citation:
Assignee:
FENG WEIZHONG (CN)
International Classes:
H02P9/04; F01D15/10
Foreign References:
| CN105703676A | 2016-06-22 | |||
| CN103997277A | 2014-08-20 | |||
| CN103352824A | 2013-10-16 | |||
| CN105098973A | 2015-11-25 | |||
| CN103398005A | 2013-11-20 | |||
| US4920276A | 1990-04-24 |
Other References:
See also references of EP 3444940A4
Attorney, Agent or Firm:
SUNRAY INTELLECTUAL PROPERTY ATTORNEYS (CN)
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