JPS55110313A - Electric water-wheel speed governor - Google Patents
Electric water-wheel speed governorInfo
- Publication number
- JPS55110313A JPS55110313A JP1762179A JP1762179A JPS55110313A JP S55110313 A JPS55110313 A JP S55110313A JP 1762179 A JP1762179 A JP 1762179A JP 1762179 A JP1762179 A JP 1762179A JP S55110313 A JPS55110313 A JP S55110313A
- Authority
- JP
- Japan
- Prior art keywords
- rotational
- frequency
- setter
- inputted
- pulses
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
Landscapes
- Control Of Water Turbines (AREA)
- Control Of Velocity Or Acceleration (AREA)
- Control Of Eletrric Generators (AREA)
Abstract
PURPOSE: To attain miniaturization and reduction in price by putting semiconductor-implementation into effect by composing a rotational-frequency setter of a digital counter, D/A converter, etc.
CONSTITUTION: When water wheel 1 is actuated and the rotational frequency of the wheel reaches 80W90% of its rated rotational frequency, rotational-frequency setter 30 is controlled to maintain the rated rotational frequency. In this case, output pulses from pulse generator 32 of setter 30 are inputted to binary-coded decimal BCD counter 35 by way of contact 33 or 34. Counter 35 used a three-digit one, for example, and is preset to 500, and consequently its count value increases from 500 when pulses are inputted from its increase INC side while decreasing from 500 when they are inputted from its decrease DEC side on the contrary. Further, D/A converter 36 converts count values 0W999 into 0W-10V. To set the rotational set range to ±10% of the rated rotational frequency, bias setter 37 generates a voltage equivalent to 90%, e.g. -4.5V, so that when input resistances 38 and 39 are adequately set, +4.5W+5.5V (equivalent to 90W110%) can be obtained by pulses 0W999.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1762179A JPS55110313A (en) | 1979-02-15 | 1979-02-15 | Electric water-wheel speed governor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1762179A JPS55110313A (en) | 1979-02-15 | 1979-02-15 | Electric water-wheel speed governor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS55110313A true JPS55110313A (en) | 1980-08-25 |
Family
ID=11948934
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1762179A Pending JPS55110313A (en) | 1979-02-15 | 1979-02-15 | Electric water-wheel speed governor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS55110313A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59157701A (en) * | 1983-02-25 | 1984-09-07 | Hitachi Ltd | Speed governor of water wheel generator |
-
1979
- 1979-02-15 JP JP1762179A patent/JPS55110313A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59157701A (en) * | 1983-02-25 | 1984-09-07 | Hitachi Ltd | Speed governor of water wheel generator |
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