Title:
HIGH-PRECISION PHASE LOCKING METHOD FOR INTELLIGENT INTEGRATED LOW-PRESSURE REACTIVE POWER MODULE
Document Type and Number:
WIPO Patent Application WO/2017/211060
Kind Code:
A1
Abstract:
Disclosed is a high-precision phase locking method for an intelligent integrated low-pressure reactive power module, the method comprising a multiplicative phase discrimination link (1), a variable frequency period integration link (2), a variable parameter integration separation speed change PI regulation link (3), an angular frequency integration link (4), a frequency estimation link (5), remainder (6), sine (7) and cosine (8). An improved PI regulator uses a variable parameter integration separation speed change PI regulator for regulation, so that the phase locking precision is improved and the static deviation is eliminated under the premise that the rapidity of phase locking can be ensured. An improved loop filter can eliminate the influence of harmonic wave and frequency changes on the output precision of a phase-locked loop when in a steady state.
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Inventors:
XIA WU (CN)
WANG XINMING (CN)
WANG ZONGCHEN (CN)
FENG GUOWEI (CN)
YANG JIAN (CN)
XIA WEN (CN)
WANG XINMING (CN)
WANG ZONGCHEN (CN)
FENG GUOWEI (CN)
YANG JIAN (CN)
XIA WEN (CN)
Application Number:
PCT/CN2016/109927
Publication Date:
December 14, 2017
Filing Date:
December 14, 2016
Export Citation:
Assignee:
JIANGSU MODERN ELECTRIC TECH CO LTD (CN)
International Classes:
G05F1/56; H02J3/18
Foreign References:
| CN106055000A | 2016-10-26 | |||
| CN102904568A | 2013-01-30 | |||
| CN101820282A | 2010-09-01 | |||
| CN104506188A | 2015-04-08 | |||
| CN104280610A | 2015-01-14 | |||
| CN103558436A | 2014-02-05 | |||
| JP2005204091A | 2005-07-28 |
Attorney, Agent or Firm:
NANJING ZHONGSHAN PATENT AGENT CO., LTD. (CN)
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