Power Quality Control Method for Active Suppression of Electric Vehicle Impact

An electric vehicle, active suppression technology, applied in the field of electric vehicle control, can solve the problems of failing to guarantee vehicle power quality, affecting vehicle dynamics, and insufficient slope function of electric drive system characteristics.

CN105216780BInactive Publication Date: 2017-12-15SHANGHAI 01 POWER TECH +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2017-12-15
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention provides a power quality control method for actively inhibiting the shock extent of an electric automobile. The power quality control method comprises the following steps: step 1. online receiving or identifying the operation information of an electricity driven system, the status information of the electric automobile and the operating information of a driver; step 2: executing control on the driving torque of the electric automobile based on active damping dampers and the predicted shock extent inhibition; step 3: executing the active power quality control based on the feedback of the shock extent of the electric automobile; step 4: executing self-learning based on dynamic response characteristics of the electricity driven system, actively caught by a characteristic working condition; and step 5: outputting a control instruction to the electricity driven system, so that the active optimal control on the power quality of the electric automobile can be realized. Through the adoption of the power quality control method disclosed by the invention, the active inhibition of an automobile shock caused by the mutations in driving force, the active inhibition of an automobile shock caused by random changes of the running resistance of the automobile, and the on-line real-time control on the power quality and the self-learning of the electric automobile are realized, and the power quality control method has the characteristics that the power quality is good and is easy to realize on a real electric automobile.
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Description

technical field

[0001] The invention relates to an electric vehicle control technology, in particular to a power quality control method for active suppression of electric vehicle shock. Background technique

[0002] Electric vehicles have become the focus and hotspot of global development, and their electric drive system has corresponding fast characteristics. If the power quality cannot be effectively controlled, it will not only deteriorate the driving comfort of the vehicle, but also cause torsional vibration of the power transmission system, thereby Threat to powertrain reliability. Therefore, the power quality control of electric vehicles is one of the important contents of electric vehicle control.

[0003] At present, for the control of the power quality of electric vehicles, the ramp function is generally used to suppress the sudden change of the vehicle driving torque, thereby suppressing the sudden change of the vehicle acceleration and avoiding the impact of the ...

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Embodiment Construction

[0090] The present invention will be described in detail below in conjunction with specific embodiments. The following examples will help those skilled in the art to further understand the present invention, but do not limit the present invention in any form. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of the present invention. These all belong to the protection scope of the present invention.

[0091] Such as figure 1As shown, in the power quality control method for active suppression of electric vehicle shock of the present invention, the electric drive system of the electric vehicle includes a vehicle controller, a power supply system, a motor system, a CAN bus, and a sensor. The vehicle controller They are respectively connected to the power supply system, the motor system, and the power accessories through the CAN bus, and connected to the sensor through the electrical wiring harness...