Voltage closed-loop system stability test system

Abstract

The invention discloses a voltage closed-loop system stability test system, which comprises an engine, an engine controller, an ISG motor and an ISG motor controller which are arranged on a test bed, and is characterized in that the engine drags the ISG motor to generate electric energy; the system also comprises a set of twin trawling system which is used for simulating the electric energy generated by the ISG motor consumed by the electric equipment of the whole vehicle. The twin trawling system comprises a whole vehicle electric equipment simulation motor, a simulation motor controller, a test accompanying motor and a test accompanying motor controller, wherein the whole vehicle electric equipment simulation motor is in twin trawling connection with a rotating shaft of the test accompanying motor; and a direct current bus of the ISG motor controller is connected with a direct current bus of the simulation motor controller. According to the invention, a set of twin trawling system is introduced to simulate the electric energy generated by the ISG motor consumed by the electric equipment of the whole vehicle, the simulated load power range is wide, the heating amount is small, the low power consumption mode can be switched to the high power consumption mode in a very short time, and the method is closer to the power consumption working condition of the real vehicle.

Description

technical field [0001] The invention relates to the field of voltage closed-loop control, in particular to a voltage closed-loop system stability test system. Background technique [0002] When a hybrid vehicle fails to supply power to the on-board DC / DC converter due to a large battery failure, it will take the following measures: figure 1 In the control method shown, the engine drives the ISG motor to generate power to generate high voltage and transmit it to the DC / DC converter to convert it to low voltage, and then supply power to other electrical equipment on the vehicle. [0003] The power of the electric equipment on the vehicle is different, complex and diverse, and the power consumption changes greatly in an instant, and the change is random and unpredictable. If the ISG motor cannot adjust the power generation in time according to the change of the power consumption of the vehicle's electrical equipment, the power supply of the useful electrical equipment will not ...

AI Technical Summary

Problems solved by technology

However, whether it is to simulate the electric load of the whole vehicle by changing the resistance value of the variable resistor, or to simulate the electric load of the whole vehicle through the control of the three-phase inductance by the motor controller, the corresponding is to consume the electric energy generated by the ISG motor through heat generation. If the power is too large, it is easy to cause a burning accident of the simulation device, which makes the method of heating and consuming electric energy not suitable for high-power testing.

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