Topic
Dynamic braking
About: Dynamic braking is a research topic. Over the lifetime, 3472 publications have been published within this topic receiving 34897 citations. The topic is also known as: Rheostatic brake.
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Patent•
03 May 2001TL;DR: In this article, regenerative braking is applied in an electrical vehicle during towing of the vehicle to recharge the battery and brake the vehicle, when the vehicle is inadvertently disconnected from a connector that couples the electrical vehicle to the towing vehicle.
Abstract: Regenerative braking is actuated in an electrical vehicle during towing of the vehicle to recharge the battery and brake the vehicle. When a driver of a towing vehicle depresses the brakes of the vehicle ( 202 ), the electrical vehicle applies regenerative braking in proportion to a braking signal from the towing vehicle ( 206 ). Also, regenerative braking is applied to the electrical vehicle when the vehicle is inadvertently disconnected from a connector ( 110 ) that couples the electrical vehicle to the towing vehicle ( 208 ).
23 citations
Patent•
08 Aug 2000TL;DR: In this paper, a braking system for an electric vehicle with an electric motor/generator assembly and a conventional electrical energy storage device is described. But the braking system is not suitable for the use with an antiskid braking system.
Abstract: A braking system 12 for use with an electric vehicle 10 including an electric motor/generator assembly 14 , and a conventional electrical energy storage device 16 . Motor/generator 14 selectively drives wheels 20 of vehicle 12 . The braking system 12 includes a motor control module 26 which is communicatively coupled to motor/generator 14 and which selectively causes motor/generator 14 to provide a regenerative braking function at wheels 20 of vehicle 10 . Braking system 10 further includes an antiskid braking system which selectively provides friction braking at wheels 20 and 24 of vehicle 10 . The braking system 12 is effective to detect antiskid braking events at each of the wheels 20, 24 , to selectively provide an antiskid braking function at each of wheels 20, 24 where the antiskid braking events are detected, and to selectively disable the regenerative braking function only when an antiskid braking event is detected at either of wheels 20.
23 citations
Patent•
08 Nov 2001TL;DR: In this article, an enhanced emergency braking system includes an accelerator pedal operated by the driver and used to control the overall vehicle speed, when a forward detection apparatus detects an imminent contact, the braking system automatically applies braking force to the vehicle while the vehicle engine speed is reduced.
Abstract: An enhanced autonomous emergency braking system includes an accelerator pedal operated by the driver and used to control the overall vehicle speed. When a forward detection apparatus detects an imminent contact, the braking system automatically applies braking force to the vehicle while the vehicle engine speed is reduced. The amount of brake force applied is a continuous function of relative speed, relative distance, collision probability and target classification. The braking force may be reduced when the driver or passenger are unbuckled or may be disabled if the driver depresses the accelerator pedal by a predetermined amount. In addition, the amount of brake force applied by the driver is amplified to further enhance braking performance.
23 citations
TL;DR: The proposed nonlinear controller based BFC-NSFCL is very effective in enhancing the FRT capability of the WF and outperforms the conventional BFCL and SDBR by maintaining a near-seamless performance during various grid fault situations.
Abstract: High penetration of Doubly Fed Induction Generator (DFIG) into existing power grid can attribute complex issues as they are very sensitive to the grid faults. In addition, Fault Ride Through (FRT) is one of the main requirements of the grid code for integrating Wind Farms (WFs) into the power grid. In this work, to enhance the FRT capability of the DFIG based WFs, a Bridge-Type Flux Coupling Non-Superconducting Fault Current Limiter (BFC-NSFCL) is proposed. The effectiveness of the proposed BFC-NSFCL is evaluated through performance comparison with that of the Bridge-Type Fault Current Limiter (BFCL) and Series Dynamic Braking Resistor (SDBR). Moreover, a dynamic nonlinear controller is also proposed for controlling the operation of the BFC-NSFCL. Extensive simulations are carried out in the MATLAB/SIMULINK environment for both symmetrical and unsymmetrical temporary as well as permanent faults. Based on the simulation results and different numerical analysis, it is found that the proposed nonlinear controller based BFC-NSFCL is very effective in enhancing the FRT capability of the WF. Also, the BFC-NSFCL outperforms the conventional BFCL and SDBR by maintaining a near-seamless performance during various grid fault situations.
23 citations
Patent•
08 Nov 1994TL;DR: In this article, a method for controlling the triggering sensitivity of an automatic braking process for a motor vehicle based on the driving behavior of an individual driver is presented, where a predetermined fixed threshold value of the actuation speed of the brake pedal is multiplied by a driver-dependent factor which is determined after each braking process.
Abstract: A method is disclosed for controlling the triggering sensitivity of an automatic braking process for a motor vehicle based on the driving behavior of an individual driver. A predetermined fixed threshold value of the actuation speed of the brake pedal is multiplied by a driver-dependent factor which is determined after each braking process, as a function of the actuation speed and of the pedal travel of the brake pedal, to generate a driver-dependent threshold for actuation of automatic braking.
23 citations