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A vehicle power supply system, active hybrid rectifier and control method

A technology of power supply system and rectifier, which is applied in current collectors, efficient vehicle charging, electric vehicles, etc., can solve problems such as damage to automobile electrical systems, and achieve the effect of solving the problem of load dumping, small power dissipation, and low overall cost.

Active Publication Date: 2020-03-27
CHONGQING SANXIN ELECTRONICS
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Will damage the car electrical system

Method used

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  • A vehicle power supply system, active hybrid rectifier and control method
  • A vehicle power supply system, active hybrid rectifier and control method
  • A vehicle power supply system, active hybrid rectifier and control method

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Embodiment Construction

[0034] see Figure 2 to Figure 4 , a vehicle power supply system, including a generator 1, an excitation coil 2, a voltage regulator 3 and a rectifier 4; wherein:

[0035] The rectifier 4 converts the three-phase alternating current of the generator into direct current to provide charging voltage for the storage battery E; the voltage regulator 3 controls the current of the exciting coil 2 according to the output voltage of the rectifier 4; the power supply terminal VDD of the voltage regulator 3 is connected to the positive terminal of the storage battery E or through The ignition switch is connected to the positive terminal of battery E.

[0036] Among them, the rectifier 4 adopts an active hybrid rectifier, which is composed of a three-phase bridge rectifier and a rectifier control circuit 5; the upper bridge arm of the three-phase bridge rectifier, that is, the output bridge arm, adopts diode rectification, and the lower bridge arm, that is, the ground bridge arm, adopts a...

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PUM

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Abstract

The invention discloses a vehicle applied power supply system and an active mixing rectifier and a control method. The vehicle applied power supply system comprises a motor, excitation coils, a voltage regulator and a rectifier. The rectifier is an active mixing rectifier which consists of a three-phase bridge type rectifier and a rectifier control circuit. The upper bridge arm of the three-phase type rectifier adopts diodes to rectify while the lower bridge arm adopts a MOSFET tube to rectify. When a certain phase voltage of the motor is greater than the voltage outputted by the rectifier, the rectification diode corresponding to the phase turns on; when a certain phase voltage of the motor is smaller than the voltage outputted by the rectifier, the rectification diode corresponding to the phase turns off. The rectifier control circuit receives the signal outputted from the phase wires of the motor and serves as the driving signal provided to the grating electrode of the MOSFET tube. When a certain phase voltage of the motor is smaller than the ground voltage, the rectifier control circuit provides a control signal to control the MOSFET tube corresponding to the phase to be on; otherwise, the MOSFET tube corresponding to the phase is off. The invention can be applied to a variety of vehicle applied power supply systems.

Description

technical field [0001] The invention relates to a vehicle power supply system, in particular to a vehicle power supply system, an active hybrid rectifier and a control method. Background technique [0002] The vehicle power supply system rectifies the three-phase AC power of the generator and supplies it to the load. The output power of the vehicle generator is 500W to 2000W according to the size of the vehicle's power load. The rated voltage output by the car alternator is 12V or 24V. [0003] Existing automotive power systems such as figure 1 shown in figure 1 Among them, the power supply adopts three-phase AC excitation generator, the maximum power output of the generator is 700W ~ 2000W, and the maximum output current is 50 ~ 150A. The generator consists of an armature coil and a field coil. The armature coil outputs generator energy. The excitation coil adjusts the output power of the engine by changing the current to adjust the magnetic field strength of the gener...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J7/14H02M7/219
CPCH02J7/1492H02M7/219Y02T10/92
Inventor 郑雷
Owner CHONGQING SANXIN ELECTRONICS
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