GB2265268A - Electric motor circuits - Google Patents
Electric motor circuits Download PDFInfo
- Publication number
- GB2265268A GB2265268A GB9205864A GB9205864A GB2265268A GB 2265268 A GB2265268 A GB 2265268A GB 9205864 A GB9205864 A GB 9205864A GB 9205864 A GB9205864 A GB 9205864A GB 2265268 A GB2265268 A GB 2265268A
- Authority
- GB
- United Kingdom
- Prior art keywords
- series
- motors
- compound
- armature
- improvement
- 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.)
- Withdrawn
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P5/00—Arrangements specially adapted for regulating or controlling the speed or torque of two or more electric motors
- H02P5/68—Arrangements specially adapted for regulating or controlling the speed or torque of two or more electric motors controlling two or more dc dynamo-electric motors
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Control Of Multiple Motors (AREA)
Abstract
An electric motor circuit has two or more series or compound motors A101, A201 with series windings S101, S201, and armature windings parallel connected and then series connected with respective series windings. <IMAGE>
Description
TITLE
An Improvement For Series (or Compound) Motors Parallel
Circuit.
SUMMARY OF THE INVENTION
The improvement for series (or compound) motors parallel circuit relates to multiple motors parallel driving circuit with comparatively mean operating characteristics and series field windings. It is characterized in comprising two or more series motors or compound motors with series windings, and armature windings parallel connected and then series connected with respective series windings.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a circuit diagram showing basic principle for the improvement for the series (or compound) motors parallel circuit.
DETAILED DESCRIPTION OF THE INVENTION
For the conventional multiple motors parallel driving with series field windings, a mean operation could hardly be achieved between the motors especially due to large variation slope between torsion and rotational speed of series motors. However, for practical application, we often need rather mean driving characteristics such as application of load to electrical loader. The improvement for series (or compound) motors parallel circuit relates to multiple motors parallel driving circuit with comparatively mean operating characteristics and series field windings. It is characterized in comprising two or more series motors or compound motors with series windings, and armature windings
wi parallel connected and then series connected with respective series windings.It chiefly relates to use specific wiring way to achieve mean EMF between armature assemblies of each motor so as to have comparatively mean current whereby magnetizing current of series field windings of each motor will be increased or reduced simultaneously to develop consistent characteristics of each motor. The embodiment and auxiliary circuit in relation to the present improvement is described as below:
Referring to FIG. 1, a circuit diagram showing the basic principle of the improvement for the series (or compound). motors parallel circuit wherein two series motors are used as an example for the convenience of description, which comprises:
the first motor assembly including series winding S101 and armature A101;
the second motor assembly including series winding S201 and armature A201.
The end a of series field winding S101 of the first motor assembly is leading to the positive end of power supply, end b connected to end c of armature A101; end V of armature A201 of the second motor assembly connected to end b of series field winding S101 and end c of armature A101 of the first motor assembly; end W of armature A201 of the second motor assembly is leading to end X of series field winding S201 and end d of armature A101 of the first motor assembly; end Y of series field winding S201 of the second motor assembly leading to the positive end of power supply; when motors are engaged in normal driving, series winding of two motors have the same current and accumulation of two armature current.Based on the operation of basic circuits, when the first motor load increases its rotational speed reduces and EMF reduces too, and 101 is increased to enable the increase of series field magnetizing current of two motors, and rotational speed of the second motor also reduces. Comparing to two series motors direct parallel connection, rotational speed difference between the motors of the present improvement is lower so that parallel stability is improved. When the second motor load is increased, I102 is increased too and the response of the first motor is the same.The difference lies in that, load current value of each motor series winding is to combine with the current value of each related series motor armature assembly, and the load current value of series field of conventional series motors is the load current value of the first armature, more specifically each motor of the present improvement has series field winding with bigger load current value.Above-said circuits are basic circuit, we may increase their performance by adding the following auxiliary elements including:
each armature respectively series connected with circulating limited diode: when the load is quick change type and we hope each motor has better ineria operation, we may positively and synclastically series connect the first motor armature A 101 and second motor armature A201 with stop diodes CR101, CR102 respectively to prevent from circulating current formed due to another armature as the load when the load is reduced;
each armature series connected with limited resistance respectively: when the load is quick change type and we hope each motor has better ineria operation, we may positively and synclastically series connect the first motor armature A 101 and second motor armature A201 with limited resistance
R101, R201 respectively to prevent from circulating current being reduced due to another armature as the load when the load is reduced.
In practical applications, the improvement for series (or compound) motors parallel circuit can be made into following types for flexible applications: (1) Mechanical structure type: including each independent two or more series motor assemblies being connected together or with common casing structure; (2) Electrical structure type: including comprising series motors or compound motors with series winding; if comprising compound motors their shunt field part can be the conventional long compound or short compound or auxiliary compound or differential compound type; (3) Electrical-control structure type: including the present series (or compound) motors parallel circuit directly for driving or to construct conventional motor series/parallel impedance alternation for adding impedance selection.
(4) The above-said series (or compound) motors parallel circuit series with circulating limited diode, each motor series winding can be fully or equal-divided as several parts appearing mutual parallel and then series with armature.
To conclude above statement, the present improvement for the series (or compound) motors parallel circuit relates to provide two or more series motors or compound motors with series windings, armature windings mutually parallel connected and then series with each series winding to make improvement of parallel operating characteristics of multiple motors with series windings comparing to conventional series or parallel types. Please examine it in accordance with the laws.
Claims (7)
1. An improvement for series (or compound) motors parallel circuit to maintain consistent intensity of each motor series winding, characterized in: two or more series motors or compound motors with series windings, armature windings mutually parallel connected and then series with each series winding;
load current value of series field winding combined with current value of series armature, if compound motor shunt winding can be parallel connected to each end of above-said motor armature or each end of power supply.
2. The improvement for series (or compound) motors parallel circuit according to claim 1 including each armature series with circulating limited diodes respectively.
3. The improvement for series (or compound) motors parallel circuit according to claim 1 including each armature positively series with circulating limited resistance respectively.
4. The improvement for series (or compound) motors parallel circuit according to claim 1, comprising two or more independent series motors mutually connected.
5. The improvement for series (or compound) motors parallel circuit according to claim 1, including continuous operating state or any of various kinds of operating state.
6. The improvement for series (or compound) motors parallel circuit according to claim 1, motors can be engaged in synclastical or asynclastical driving.
7. The improvement for series (or compound) motors parallel circuit according to claim 1, each motor series winding can be fully or equal-divided several parts appearing mutually parallel and then series with armature.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB9205864A GB2265268A (en) | 1992-03-18 | 1992-03-18 | Electric motor circuits |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB9205864A GB2265268A (en) | 1992-03-18 | 1992-03-18 | Electric motor circuits |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| GB9205864D0 GB9205864D0 (en) | 1992-04-29 |
| GB2265268A true GB2265268A (en) | 1993-09-22 |
Family
ID=10712359
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB9205864A Withdrawn GB2265268A (en) | 1992-03-18 | 1992-03-18 | Electric motor circuits |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB2265268A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1395380A (en) * | 1971-08-06 | 1975-05-29 | Linde Ag | Vehicle drive systems employing electric motors |
| GB1590441A (en) * | 1977-10-12 | 1981-06-03 | Rubery Owen Conveyancer Ltd | Electric motor circuits |
-
1992
- 1992-03-18 GB GB9205864A patent/GB2265268A/en not_active Withdrawn
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1395380A (en) * | 1971-08-06 | 1975-05-29 | Linde Ag | Vehicle drive systems employing electric motors |
| GB1590441A (en) * | 1977-10-12 | 1981-06-03 | Rubery Owen Conveyancer Ltd | Electric motor circuits |
Also Published As
| Publication number | Publication date |
|---|---|
| GB9205864D0 (en) | 1992-04-29 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| WAP | Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1) |