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•
02 Apr 1979
TL;DR: In this paper, a three-phase electric motor is partially braked as a result of self-excitation when the power supply is disconnected and a capacitor is connected across one of the windings.
Abstract: A three-phase electric motor is partially braked as a result of self-excitation when the power supply is disconnected and a capacitor is connected across one of the windings. The motor is then rapidly brought to a standstill by applying a short-circuit (or connecting a relatively low impedance) across one or both of the other windings, and essential condition being that the short-circuit is initiated within a predetermined range of values of phase angle in a waveform of the self-excitation. Preferred ranges of phase angle are established for selected configurations of mechanical and electronic short-circuiting switches.
14 citations
TL;DR: In this article, a nonlinear anti-lock braking system combined with active suspensions was developed for a quarter-vehicle model by employing nonlinear backstepping control design schemes.
14 citations
19 Apr 2010
TL;DR: In this paper, the correlation between the regenerative energy, terrain adhesive coefficient and deceleration rate of the vehicle was analyzed and a decision making strategy was designed to split and distribute the braking force to front and rear wheels accordingly.
Abstract: Deceleration rate and terrain adhesive coefficient are critical factors, which are drastically diminishing the regenerative energy enhancement in the hybrid electric vehicle. In addition to that, sizing the electric propulsion system also very important to increase the acceleration performance and regenerative braking efficiency. For example, oversizing the electric propulsion system will occupy additional space and increase the weight of the vehicle. On the other hand , down sizing the electric propulsion system will not contribute to achieve the fuel economy of the vehicle, where the effect of the hybridization is negligible. Nevertheless, even for a given hybrid drive train design, the electric propulsion system cannot produce all kind of braking power to stop the vehicle within the expected braking condition. Therefore the involvement of the mechanical braking system is inevitable to ensure the safety braking. This paper addresses the correlation between the regenerative energy, terrain adhesive coefficient and deceleration rate of the vehicle. Here, front wheel drive vehicle is considered for the simulation and a decision making strategy is designed to split and distribute the braking force to front and rear wheels accordingly. Finally a simulation study is conducted to outline the proposed analysis. (6 pages)
14 citations
Patent•
28 Sep 1994TL;DR: In this article, the same power controller is used in both motor operation and braking, where the field current with the separately excited electric motor can be controlled or regulated by the power controller.
Abstract: An electric motor with an electrodynamic braking means, where the same power controller is used in both motor operation and in braking. Therefore, the field current with the separately excited electric motor can be controlled or regulated by the power controller. It is also possible to preset a certain braking time. A measure of the braking current is obtained by sensing the voltage at a braking resistor, so the braking current can also be regulated on the basis of the field current.
14 citations