A kind of inverter component and control method

Abstract

The invention provides an inverter component and a control method. The inverter component is used to drive a three-phase motor, and the three-phase motor includes a first inductor, a second inductor and a third inductor. The inverter assembly includes a first three-phase full-bridge inverter circuit and a second three-phase full-bridge inverter circuit. The first three-phase full-bridge inverter circuit includes a first half-bridge, a second half-bridge and a third half-bridge. The two-three-phase full-bridge inverter circuit includes a fourth half-bridge, a fifth half-bridge and a sixth half-bridge. The input ends of the first three-phase full-bridge inverter circuit and the second three-phase full-bridge inverter circuit are electrically connected to the DC power supply. The output end of the first half bridge is electrically connected to the first end of the first inductor, and the second end of the first inductor is electrically connected to the output end of the fourth half bridge. The output end of the second half-bridge is electrically connected to the first end of the second inductor, and the second end of the second inductor is electrically connected to the output end of the fifth half-bridge. The output end of the third half-bridge is electrically connected to the first end of the third inductor, and the second end of the third inductor is electrically connected to the output end of the sixth half-bridge.

Description

technical field [0001] Embodiments of the present invention relate to motor drive technology, and in particular to an inverter component and a control method. Background technique [0002] New energy vehicles such as electric vehicles have the characteristics of energy saving, low emission, or even zero emission, so they are vigorously promoted by the state and can develop rapidly. As the core assembly of an electric vehicle, the motor and drive system have characteristics that affect key attributes such as power, safety, and economy of the vehicle. At present, the requirements for compactness and low cost of electric vehicles are increasing year by year, and high-speed and high-voltage motors have gradually become a trend. However, while increasing the voltage of the battery platform, the performance of the high-voltage components of the vehicle must also be improved accordingly. [0003] Since the high-voltage components used in vehicles, such as DC / DC modules and charger...

AI Technical Summary

Problems solved by technology

[0003] Since the high-voltage components used in vehicles, such as DC / DC modules and chargers, are mostly conventional high-voltage platforms, such as 350V or 410V, they cannot meet higher voltage requirements such as 700V. Therefore, in order to meet the requirements of high-voltage motors, the voltage needs to be increased to high-voltage Motor operating voltage requirements, drive the motor with high voltage to run at high voltage

In the prior art, in order to realize the boost requirement, cascaded boost converters are mostly used in the front stage of the inverter, but the power devices required in the boost inverter all need to use high withstand voltage devices, and the design is complicated. high cost

Images