Electronic speed controller, permanent magnet synchronous motor assembly and unmanned aerial vehicle

Abstract

The embodiment of the invention discloses an electronic speed controller. The electronic speed controller comprises a power supply circuit, a micro-controller and at least one intelligent power module, wherein the output end of the power supply circuit is connected to the input end of the micro-controller; the output end of the micro-controller is connected to the input end of the at least one intelligent power module; and, after voltage of direct-current input is adjusted by the power supply circuit, under the control of the micro-controller, the direct-current input is converted into needed alternating-current output through the at least one intelligent power module. By means of the electronic speed controller provided in the embodiment, a pre-driver and an MOSFET are integrated into the intelligent power module; the anti-interference capability of the electronic speed controller is improved; and the volume and the occupation space of the electronic speed controller are reduced.

Description

technical field [0001] The embodiment of the present invention relates to the technical field of unmanned aerial vehicles, in particular to an electronic governor, a permanent magnet synchronous motor assembly and an unmanned aerial vehicle. Background technique [0002] At present, the motors used in the existing quadrotor drones generally use permanent magnet synchronous motors, and the control methods include square wave control and sine control. Regardless of square wave control or sinusoidal control, in order to achieve better speed and stability in flight, the motor drive circuit will use a three-phase full-bridge drive circuit to convert DC power into AC power required for motor operation. [0003] With the increasing demand of the UAV market and the diversification of user needs, it is difficult for the existing UAV power unit to be used on a smaller and more integrated UAV. The power plant of the existing four-rotor UAV adopts a permanent magnet synchronous motor, ...

AI Technical Summary

Problems solved by technology

[0004] The pre-driver is a separate device, a pre-driver provides protection and control functions for all MOSFETs of the three-phase full-bridge circuit, making the anti-interference ability of the electronic governor not strong

Moreover, the separate pre-driver device brings many technical problems to the electronic governor, such as low integration, high product cost, cumbersome circuit, large volume, large space occupation, and many devices constituting the governor.

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