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PWM-based V2G bidirectional charge and discharge system used for new energy automobile

A new energy vehicle, charging and discharging technology, used in electric vehicles, current collectors, electrical components, etc., can solve the problems of low battery utilization rate and poor charging technology, and improve reliability and practicability, improve reliability, power high factor effect

Inactive Publication Date: 2016-02-17
邹斌
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Problems solved by technology

[0004] The technical problem to be solved by the present invention is: in order to overcome the shortcomings of the low utilization rate of the storage battery and poor charging technology in the prior art, provide a PWM-based battery with high utilization rate of the storage battery, high power factor, and small harmonic content. V2G bidirectional charging and discharging system for new energy vehicles

Method used

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  • PWM-based V2G bidirectional charge and discharge system used for new energy automobile
  • PWM-based V2G bidirectional charge and discharge system used for new energy automobile

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Embodiment Construction

[0018] The present invention is described in further detail now in conjunction with accompanying drawing. These drawings are all simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, so they only show the configurations related to the present invention.

[0019] Such as figure 1 with figure 2 As shown, a PWM-based V2G two-way charging and discharging system for new energy vehicles includes an incoming line module 1, a three-phase AC module 2, a soft start module 5, a battery module 6, and a central control device. The incoming line module 1. The three-phase AC module 2, the soft-start module 5 and the battery module 6 are connected in sequence, and the incoming line module 1, the three-phase AC module 2, the soft-start module 5 and the battery module 6 are all connected to the central control device;

[0020] The incoming line module 1 is connected with a three-phase measurement module, the three-phase measu...

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Abstract

The invention relates to a PWM-based V2G bidirectional charge and discharge system used for a new energy automobile. The V2G bidirectional charge and discharge system comprises an inlet wire module, a three-phase AC module, a soft start module, a storage battery module and a central control module. The inlet wire module, the three-phase AC module, the soft start module and the storage battery module are connected in turn. According to the PWM-based V2G bidirectional charge and discharge system used for the new energy automobile, charge and discharge of the system are switched by a voltage PWM rectifier formed by IGBT modules in the three-phase AC module so that the system is enabled to have the characteristics of high power factor and low harmonic content; acquisition and processing of voltage and current analog signals are completed via a current sampling module and a voltage sampling module, a double feedback system of voltage closed-loop feedback and current closed-loop feedback is formed, and reliability of the system is enhanced; and then charge and discharge of the system are controlled and switch via a charge and discharge mode switching module and a charge and discharge mode control module so that reliability and practicality of the system are further enhanced.

Description

technical field [0001] The invention relates to a PWM-based V2G bidirectional charging and discharging system for new energy vehicles. Background technique [0002] With the continuous improvement of the current level of science and technology, people's utilization rate of energy is also increasing. [0003] Among new energy vehicles, the number of electric vehicles has increased significantly, but the use of batteries for electric vehicles is only limited to the electric vehicles themselves, thus reducing the practicability of batteries for electric vehicles. Not only that, in the current electric vehicle battery charging technology, thyristor phase-shift control is generally used, but this technology has disadvantages such as serious distortion of the grid-side current waveform and low power factor. Contents of the invention [0004] The technical problem to be solved by the present invention is: in order to overcome the shortcomings of the low utilization rate of the s...

Claims

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Application Information

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IPC IPC(8): H02J7/10
Inventor 邹斌
Owner 邹斌
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