APU controller

Abstract

The present invention discloses an APU controller, including a motor body, a shell, a power drive control, a motor drive control and a current sensor, wherein the motor body is installed on one side of the shell, and a power drive control board and a motor drive control board are installed in the shell, wherein the power drive control board is composed of a power drive board and a power control board, and the motor drive control board is composed of a motor drive board and a motor control board. In the present invention, after receiving a "start" command, the APS controller will connect the starter contactor, and the starter controller uses the 28V DC power of the aircraft battery to drive the starter motor, and controls the starter motor to drag the TPU to accelerate the turbine rotor; when the disengagement speed is reached, the APS controller will disconnect the starter contactor, and the starter motor will stop running; during the starting and acceleration process, the power module in the starter controller will convert the input power supply according to the feedback signal of the motor drive module to control the uniform speed acceleration of the starter motor, and feed back the motor voltage and current signals to the APS controller for collection.

Description

Technical Field

[0001] The present invention relates to the technical field of APU controllers, in particular to an APU controller. Background Art

[0002] As an inverter that converts DC power from the power supply into AC power required by the motor, the motor controller is an indispensable key component of many transmission systems. Taking a helicopter as an example, the motor controller modulates the source power into a voltage and current of a specific amplitude and frequency through the power switching device according to the instructions of the master control device, thereby driving the motor to generate the torque and speed required by the aircraft.

[0003] As a secondary supporting component, the APU controller has special characteristics of the three-phase motor itself. Its input voltage is 18-32V, the load starting current is as high as 270A, and it has strict requirements on working conditions. Therefore, we propose an APU controller. Summary of the invention

[0004] The object of the present invention is to provide an APU controller to solve the problems in the prior art.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an APU controller, comprising a motor body, a shell, a power drive control, a motor drive control and a current sensor, wherein the motor body is installed on one side of the shell, and a power drive control board and a motor drive control board are installed in the shell, wherein the power drive control board is composed of a power drive board and a power control board, and the motor drive control board is composed of a motor drive board and a motor control board.

[0006] Preferably, the motor body is provided with a connecting flange at one end of the shell, and the motor body is fixed to the shell by the connecting flange and bolts.

[0007] Preferably, the current sensor is a Hall sensor, and the current sensor is fixed on the housing.

[0008] Preferably, the motor drive board uses a single-layer ceramic as a PCB substrate, and the motor control board and the power board card realize the connection between the control signal and the power circuit through a board-to-board connector, and the motor control board and the power board card are fixed by studs.

[0009] Preferably, the shell is made of aluminum-magnesium alloy; the power control board and the motor control board use FR-4 material as the PCB substrate, and the power drive board and the motor drive board use an alumina ceramic substrate as the PCB substrate.

[0010] Preferably, the motor drive board is connected to the output power of the power drive board through a copper bar; the motor drive board is connected to the shell through a thermal conductive adhesive.

[0011] Preferably, the power control board is added to the power driving board via a connector, and the power control board is directly connected to two copper bars extending from the power driving board.

[0012] Preferably, a conductive rubber strip installation groove is provided inside the shell, and the conductive rubber strip installation groove is filled with a conductive rubber strip; the conductive rubber strip is made of silver-plated glass, silver-plated aluminum, and silver conductive particles are evenly distributed in silicone rubber.

[0013] Preferably, a heat sink is provided on the outer side of the shell.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. When the APS controller receives the "start" command, the APS controller will turn on the starter contactor. The starter controller uses the 28V DC power of the aircraft battery to drive the starter motor, and controls the starter motor to drag the TPU to accelerate the turbine rotor. When the disengagement speed is reached, the APS controller will disconnect the starter contactor and the starter motor will stop running; during the starting and acceleration process, the power module in the starter controller converts the input power according to the feedback signal of the motor drive module to control the uniform speed acceleration of the starter motor, and feeds back the motor voltage and current signals to the APS controller for collection.

[0016] 2. The shell is made of aluminum alloy, and toothed heat sinks are designed on the upper and lower end covers to enhance the heat dissipation area of ​​the entire driver; the power control board and motor control board use FR-4 material as the PCB substrate, and the power drive board and motor drive board use alumina ceramic substrate as the PCB substrate, which has better thermal conductivity. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0018] Figure 1 It is a schematic diagram of the present invention;

[0019] Figure 2 is a system connection block diagram of the present invention;

[0020] Figure 3 is an electrical interface diagram of a starter controller of the present invention;

[0021] Figure 4 It is a schematic diagram of the structure of the present invention;

[0022] Figure 5 It is a structural schematic diagram of the motor body of the present invention;

[0023] Figure 6 The present invention Figure 4 A schematic diagram of the structure from another perspective;

[0024] Figure 7 It is a schematic diagram of the structure inside the housing of the present invention;

[0025] Figure 8 It is a schematic diagram of the structure of the power drive control board and the motor drive control board of the present invention;

[0026] Fig. 9 It is a structural schematic diagram of the power drive control board of the present invention.

[0027] In the figure: 1, motor body; 2, housing; 11, clamp; 12, connecting flange; 21, heat sink; 22, power drive control board; 23, motor drive control board; 221, power drive board; 222, power control board. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention.

[0029] See also Figure 1-9In an embodiment of the present invention, an APU controller includes a motor body 1, a shell 2, a power drive control, a motor drive control and a current sensor. The motor body 1 is installed on one side of the shell 2. A heat sink 21 is provided on the outside of the shell 2, and the shell is used for natural heat dissipation. A power drive control board 22 and a motor drive control board 23 are installed in the shell 2. The power drive control board 22 is composed of a power drive board 221 and a power control board 222. The motor drive control board 23 is composed of a motor drive board and a motor control board. The motor drive board uses a single-layer ceramic as a PCB substrate. The motor control board and the power board card realize the connection between the control signal and the power circuit through a board-to-board connector, and the motor control board and the power board card are fixed by studs. The shell 2 is made of aluminum-magnesium alloy; the power control board 222 and the motor control board use FR-4 material as the PCB substrate, and the power drive board 221 and the motor drive board use alumina ceramic substrate as the PCB substrate; the motor drive board is connected to the output power of the power drive board 221 through a copper bar; the motor drive board is connected to the shell 2 through thermal conductive glue; the power control board 222 is added to the power drive board 221 through a connector, and the power control board 222 is directly connected to the two copper bars extending from the power drive board 221.

[0030] The motor drive board uses a single-layer ceramic as the PCB substrate, which is mainly used to route the power circuit. The motor control board and the power board use a board-to-board connector to connect the control signal to the power circuit, and the two boards are fixed together by studs (or double-row pin welding), which mainly includes motor power supply and Hall signal output.

[0031] The housing is made of aluminum alloy, and toothed heat sinks are designed on both the upper and lower end covers to enhance the heat dissipation area of ​​the entire driver. The power control board and motor control board use FR-4 material as the PCB substrate, and the power drive board and motor drive board use alumina ceramic substrate as the PCB substrate, which has better thermal conductivity.

[0032] The power drive control board consists of two circuit boards: the power drive board and the power control board. The power drive board contains the loading power tube and other high-power devices of the entire power drive control board, and the heat is dissipated through the ceramic circuit board. The power control board is accumulated on the power drive board through the connector and is used to control the algorithm of the entire power drive control board.

[0033] The motor drive line is connected by the copper strip output by the MOSFET of the motor drive board, using 25mm 2 Wire diameter.

[0034] The power control board is directly connected to the two copper bars extending from the power driver board. One copper bar is directly connected to the input power and the other copper bar is grounded. The signal line between the power driver board and the power control board passes through less than 1mm 2 The connection between the motor drive board and the motor control board is the same.

[0035] The power drive control board and the motor drive control board are connected via a strip connector (signal line) with a wire diameter less than 1mm2.

[0036] The current sensor is a Hall sensor, and the current sensor is fixed on the housing 2. The motor body 1 is provided with a connecting flange 12 at one end of the housing 2, and the motor body 1 is fixed on the housing 2 through the connecting flange 12 and bolts.

[0037] The housing 2 is provided with a conductive rubber strip installation groove, which is filled with a conductive rubber strip; the conductive rubber strip is made of silver-plated glass, silver-plated aluminum, and silver conductive particles are evenly distributed in silicone rubber.

[0038] like Figure 3 ; When the APS controller receives the "start" command, the APS controller will turn on the starter contactor. The starter controller uses the 28V DC power of the aircraft battery to drive the starter motor, and controls the starter motor to drag the TPU to accelerate the turbine rotor. When the disengagement speed is reached, the APS controller will disconnect the starter contactor and the starter motor will stop running; during the starting and acceleration process, the power module in the starter controller converts the input power according to the feedback signal of the motor drive module to control the uniform speed acceleration of the starter motor, and feeds back the motor voltage and current signals to the APS controller for collection.

[0039] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An APU controller, characterized in that: The invention comprises a motor body (1), a housing (2), a power drive control, a motor drive control and a current sensor, wherein the motor body (1) is mounted on one side of the housing (2), a power drive control board (22) and a motor drive control board (23) are mounted in the housing (2), the power drive control board (22) is composed of a power drive board (221) and a power control board (222), and the motor drive control board (23) is composed of a motor drive board and a motor control board.

2. The APU controller according to claim 1, characterized in that: The motor body (1) is provided with a connecting flange (12) at one end of the housing (2), and the motor body (1) is fixed to the housing (2) via the connecting flange (12) and bolts.

3. The APU controller according to claim 1, characterized in that: The current sensor is a Hall sensor, and the current sensor is fixed on the housing (2).

4. The APU controller according to claim 1, characterized in that: The motor drive board uses a single-layer ceramic as a PCB substrate, and the motor control board and the power board card realize the connection between the control signal and the power circuit through a board-to-board connector, and the motor control board and the power board card are fixed by studs.

5. The APU controller according to claim 1, characterized in that: The housing (2) is made of aluminum-magnesium alloy; the power control board (222) and the motor control board use FR-4 material as a PCB substrate, and the power drive board (221) and the motor drive board use an alumina ceramic substrate as a PCB substrate.

6. The APU controller according to claim 1, characterized in that: The motor drive board is connected to the output power of the power drive board (221) via a copper bar; and the motor drive board is connected to the housing (2) via a heat-conducting adhesive.

7. The APU controller according to claim 1, characterized in that: The power control board (222) is added to the power driving board (221) via a connector, and the power control board (222) is directly connected to two copper bars extending from the power driving board (221).

8. The APU controller according to claim 1, characterized in that: A conductive rubber strip installation groove is provided inside the housing (2), and a conductive rubber strip is filled in the conductive rubber strip installation groove; the conductive rubber strip is made of silver-plated glass, silver-plated aluminum, and silver conductive particles are evenly distributed in silicone rubber.

9. The APU controller according to claim 1, characterized in that: A heat sink (21) is provided on the outer side of the housing (2).

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