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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01 Aug 2016
TL;DR: In this article, the authors evaluate the cost benefit of introducing permanent magnet synchronous motors (PMSMs) into railway sub-modes to see where this solution is most appropriate, in terms of energy saved.
Abstract: the majority of drive chain losses in railway vehicles are attributable to motor inefficiency. An attractive solution to reduce these losses, and the associated energy consumption, is the implementation of Permanent Magnet Synchronous Motor (PMSM) technology. PMSMs are not only more efficient, but smaller and lighter than traditional induction machines, which can further benefit energy saving. However, introducing this technology and the associated control systems can be expensive and complex. Therefore, in this study, the authors evaluate the cost benefit of introducing PMSMs into different railway sub-modes to see where this solution is most appropriate, in terms of energy saved. The impact of regenerative braking on the cost is also considered, by simulating dynamic braking characteristics and the receptivity of different systems.
9 citations
Patent•
04 Aug 2005TL;DR: In this article, a braking distribution system for a front and a rear regenerative braking system with a front-and a rear-regenerative braking controller is presented, where the controller is configured to calculate a front base braking based at least in part on the braking request and the front base distribution.
Abstract: A braking distribution system is provided for system with a front regenerative braking system and a rear regenerative braking system. The system comprises a brake controller coupled to the front regenerative braking system and the rear regenerative braking system, and the brake controller is configured to receive a braking request, a first amount of braking that is available from the front regenerative braking system, and a second amount of braking that is available from the rear regenerative braking system. The controller is also configured to calculate a front base braking based at least in part on the braking request and a front base braking distribution, calculate a rear base braking based at least in part on the braking request and a rear base braking distribution, and determine a front regenerative braking request and a rear regenerative braking request based on the first amount and the second amount.
9 citations
Patent•
31 May 1968
9 citations
01 Jan 2005
TL;DR: In this paper, the authors examined the usefulness of a combined differential braking and active front steering system on the stability enhancement of a vehicle and showed the strong capability of the combined approach and its relative merit compared to the case that one subsystem is actuated.
Abstract: This paper examines the usefulness of a combined differential braking and active front steering system on the stability enhancement of a vehicle. The two manipulated inputs for steering intervention are the added front steer angle and the brake torque, where the later is applied at only one wheel at a time. In this study active front steering controller is designed independent of differential braking controller. Since the yaw and lateral motions are highly nonlinear, two fuzzy logic controllers are constructed to compensate the effects of road condition and parameter variation. Computer simulations using nonlinear seven degree of freedom vehicle model show the strong capability of the combined approach and its relative merit compared to the case that one subsystem is actuated.Copyright © 2005 by ASME
9 citations
TL;DR: In this paper , an optimized energy recovery strategy based on braking safety and efficient recovery is proposed, which not only enhances the energy recovery rate, but also shortens the braking distance.
9 citations