Processing

Please wait...

Settings

Settings

Goto Application

1. GB103959 - Improvements in and relating to Regenerative Braking Systems for Electrically Driven Vehicles.

Note: Text based on automatic Optical Character Recognition processes. Please use the PDF version for legal matters

[ EN ]
'.' It it be desired to produce a shorter stop at the time of regeneration., .the usual air brake system may be employed for such purpose.. , ,,; ;
Having now particularly described and ascertained the "pature of our said invention and in what. manner the same is to be performed, we declare that what we claim is:-
1. Regenerative braking system for' electrically driven vehicles in which a speed-responsive device such as a centrifugal governor or the like; driven from an axle of the vehicle, successively and automatically changes the connections of a number of motors, acting as momentum-- driven generators, from a parallel to a series relation in' accordance with predetermined degrees of reduction in the speed of the vehicle.
2. Regenerative braking system as claimed in Claim 1 in which a special booster 'generator is connected in series with the other machines returning energy to the line, the booster being driven and regulated by any suitable means, for the purpose specified.
3. In a regenerative 'braking system as Claimed in Claim 1, the arrangement for automatically reducing the speed of the booster generator as additional momentum driven generators are connected series to the line conductor, substantially as de3cribetl. "" '
4. ;In ; regenerative braking system as. claimed in Claim . the arrangement for regulating the booster generator in such a manner that the said. machine produ,cos an approximately constant current, substantially as described..
5. In a regenerative braking system as claimed in Claim 1, the provisiun
of a nuid-operated change over switch mechanism for automatically and sÍ1cces- sively changing the connections of the momentum-driven generators from a parallel to a series relation in accordance with predetermined reductions in the speed of the vehicle, substantially as described....
6. In a regenerative' braking system as claimed in Claim 1 adapted for
vehicles having fluid pressure brakes, the provision of an electro-mag. > i;tically operated vent valve connected to the brake pipe, 'the said valve being opened .on the regenerated current falling to a predetermined minimum strength/thus venting- the brake pipe and applying the fluid pressure brakes, substantially as described.
7. In a regenerative braking system as claimed in Claim 1 adapted for veliicles having,fluid pressure brakes, the provisiou of a vent valve actuated by means of the speed-responsive device to vent the brake pipe and .thus apply the fluid. pressure brakes' in' case a predetermined maximum safe speed is exceeded at the time the regenerative system is brought into operation, substantially as described.
8. 'In a regenerative braking system as claimed in Claim 7 the arrangement for determining the maximum speed at which the vent valve will be opened to apnly the fluid pressure brakes, substantially -is described.
9. In a regenerative braking system as claimed it) Claims 6 and 7. the provi- sion of a valve adapted to be manually operated simultaneously with the operation of the brake switch and arranged so as to connect the brake pipe to the vent
valves referred to on the regenerative braking system being brought into operation, substantially as described.
10. In a regenerative braking system as claimed in Claims 6 and 9, the provision of a fluid-operated switch controlling the regenerative circuit;, arranged so as to be actuated to hold the said circuit closed on the brake switch being operated to apply the regenerative braking system, the switch being retained in closed position by the pressure in the brake pipe and being opened to cut out the regenerativecircuit on the brake pipe being vented to apply the fluid pressure brakes, substantially as described.
11. Regenerative braking systcm adapted for electrically driven vehicles having fluid pressure brakes, the circuits and operative parts of which are arranged, connected, or operated substantially as described and as illustrated in the accompanying drawing.