DE607994C - Arrangement for braking electric vehicles - Google Patents
Arrangement for braking electric vehiclesInfo
- Publication number
- DE607994C DE607994C DES107363D DES0107363D DE607994C DE 607994 C DE607994 C DE 607994C DE S107363 D DES107363 D DE S107363D DE S0107363 D DES0107363 D DE S0107363D DE 607994 C DE607994 C DE 607994C
- Authority
- DE
- Germany
- Prior art keywords
- braking
- motors
- arrangement
- circuits
- electric vehicles
- 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.)
- Expired
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L7/00—Electrodynamic brake systems for vehicles in general
- B60L7/003—Dynamic electric braking by short circuiting the motor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L7/00—Electrodynamic brake systems for vehicles in general
- B60L7/02—Dynamic electric resistor braking
- B60L7/04—Dynamic electric resistor braking for vehicles propelled by dc motors
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Description
Anordnung zur Bremsung elektrischer Fahrzeuge Gegenstand des Hauptpatents ist eine Bremsschaltung für Straßenbahnfahrzeuge, bei der zwei parallel arbeitende Motoren in unabhängigen Bremsstromkreisen auf verschiedene Bremswiderstände arbeiten, wobei jedoch diese Bremsstromkreise durch die Solenoidbremse eines Anhängewagens miteinander verbunden sind, durch deren Wicklung der Bremsstrom beider Motoren fließt.Arrangement for braking electric vehicles is the subject of the main patent is a brake circuit for tram vehicles in which two work in parallel Motors in independent braking circuits work with different braking resistors, however, these braking circuits through the solenoid brake of a trailer are connected to each other, through whose winding the braking current of both motors flows.
Die Bremsschaltung nach dem Hauptpatent kann dann zu Beanstandungen führen, wenn der Wagenführer bei der Bedienung den Bremsschalter sofort in die letzte Stufe durchdreht, in der die auch als Anfahrwiderstände benutzten Bremswiderstände vollständig ausgeschaltet sind. Der Erfindung liegt die Erkenntnis zugrunde, daß in diesem Falle die Widerstände in den Motorstromkreisen kleiner sind als der Widerstand des Bremssolenoids. Dies hat zur, Folge, daß bei geringen Ungleichheiten der Motorenspannungen eine Umpolung eines der Motoren auf-, tritt, also die gewünschte Bremswirkung durch das Solenoid des Anhängewagens ausbleibt; bei durch Umpolung eintretender Reihenschaltung der Motoren herrscht an den beiden Anschlüssen des Bremssolenoids das gleiche Potential, so daß durch das Solenoid kein Strom fließt. Ein nicht gebremster Anhängewagen muß auf den gebremsten Führerwagen auflaufen.The brake circuit according to the main patent can then lead to complaints lead when the driver immediately turns the brake switch to the last when operating it 3rd stage, in which the braking resistors also used as starting resistors are completely turned off. The invention is based on the knowledge that in this case the resistances in the motor circuits are smaller than the resistance of the brake solenoid. This has the consequence that with minor inequalities in the motor voltages polarity reversal of one of the motors occurs, i.e. the desired braking effect is achieved the solenoid of the trailer fails; with series connection caused by polarity reversal the motors have the same potential at the two connections of the brake solenoid, so that no current flows through the solenoid. A trailer wagon that is not braked must run onto the braked driver's car.
Die Erfindung stellt es sich zur Aufgabe, eine Bremsschaltung mit parallel liegenden Motoren zu schaffen, bei der eine Umpolung vermieden wird und die daher den den gleichen Vorteil aufweisenden Bremsschaltungen mit in Reihe liegenden Motoren bremstechnisch gleichwertig ist. In vielen Fällen wird aus schaltungstechnischen Gründen, z. B. mit Rücksicht auf die Fahrschalterkonstruktion oder auf die Umwandlung der Kurzschlußbremsschaltung in eine wahlweise vorgesehene Nutzbremsschaltung, die Parallelschaltung, der Motoren der Reihenschaltung gegenüber vorgezogen, so daß ein Bedürfnis nach einer ;der Reihenschaltung gleichwertigen Parallelschaltung besteht.The object of the invention is to provide a brake circuit with to create parallel motors in which polarity reversal is avoided and therefore the brake circuits having the same advantage with lying in series Motors is equivalent in terms of braking technology. In many cases, it turns out to be circuit-related Reasons, e.g. B. with regard to the travel switch construction or the conversion the short-circuit braking circuit in an optionally provided regenerative braking circuit, the Parallel connection, the motors preferred to series connection, so that there is a need for a parallel connection which is equivalent to the series connection.
Erfindungsgemäß werden die geschilderten Erscheinungen bei einer Schaltung nach dem Hauptpatent dadurch vermieden, daß neben den auch als Anfahrwiderstände benutzten Bremswiderständen in die Bremskreise besondere Hilfswiderstände gelegt werden, die dauernd eingeschaltet bleiben. In der Figur ist ein Ausführungsbeispiel der Erfindung dargestellt.According to the invention, the described phenomena occur in a circuit avoided according to the main patent that in addition to the start-up resistors The braking resistors used are placed in the braking circuits with special auxiliary resistors that remain switched on permanently. In the figure is a Embodiment of the invention shown.
Die beiden unabhängigen Bremsstromkreise bestehen aus den Ankern i und 2 und den zugehörigen Feldern 3 und .4 der Motoren sowie den auch als Anfahrwiderstände benutzten Bremswiderständen 5 und 6. Die im übrigen unabhängigen Bremstromkreise der beiden parallel arbeitenden Motoren sind in der Wicklung 7 des Bremssolenoids eines Anhängewagens vereinigt.The two independent braking circuits consist of the armatures i and 2 and the associated fields 3 and .4 of the motors as well as the starting resistors used braking resistors 5 and 6. The otherwise independent braking circuits of the two motors working in parallel are in winding 7 of the brake solenoid united by a trailer.
Um eine Umpolung bei Ausschaltung der Bremswiderstände 5 und 6 zu verhindern, sind in den Bremsstromkreisen feste Zusatzwiderstände 8 und 9 vorgesehen.To prevent polarity reversal when the braking resistors 5 and 6 are switched off, fixed additional resistors 8 and 9 are provided in the braking circuits.
Die Größe der Zusatzwiderstände wird man vorteilhaft so wählen, .daß nunmehr die Widerstände der Motorenbremskreise nicht mehr im Verhältnis zum Widerstand des Solenoids zu vernachlässigen sind, der Bremsstrom der einzelnen Motoren also zu einem beträchtlichen Teil auch bei geringen Ungleichheiten in den Motorenspannungen durch die Solenoidwicklung 7 :fließt.The size of the additional resistors will advantageously be chosen so that now the resistance of the engine brake circuits is no longer in relation to the resistance of the solenoid are negligible, i.e. the braking current of the individual motors to a considerable extent even with minor inequalities in the motor voltages through the solenoid winding 7: flows.
An Stelle der festen Zusatzwiderstände kann man auch geeignete Hilfsanordnungen treffen, die ein Auslegen des Bremsschalters in die sonst übliche letzte Bremsstellung, in der der gesamte Bremswiderstand kurzgeschlossen wäre, verhindern.Suitable auxiliary arrangements can also be used instead of the fixed additional resistors meet that require the brake switch to be moved to the otherwise usual last braking position, in which the entire braking resistor would be short-circuited.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DES107363D DE607994C (en) | 1932-12-09 | 1932-12-09 | Arrangement for braking electric vehicles |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DES107363D DE607994C (en) | 1932-12-09 | 1932-12-09 | Arrangement for braking electric vehicles |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE607994C true DE607994C (en) | 1935-01-12 |
Family
ID=7528051
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DES107363D Expired DE607994C (en) | 1932-12-09 | 1932-12-09 | Arrangement for braking electric vehicles |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE607994C (en) |
-
1932
- 1932-12-09 DE DES107363D patent/DE607994C/en not_active Expired
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