Interlock-controlled high-power aviation starting-power generation control device
Through the interlocking control high-power aviation start-power generation control device, the aero generator input signal line is interlocked with the control line of the start contactor, and combined with the on-off contactor, the problems of high contactor failure rate and low system reliability in the prior art are solved, and the starting circuit and power generation circuit are isolated and independent working, thereby improving the reliability of the system.
Patent Information
- Application Number
- CN202411972741.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-30
- Publication Date
- 2025-04-11
AI Technical Summary
The existing aviation start/power generation control devices have high failure rate due to the use of conversion contactors, and the contacts are prone to sticking, and the starting channel and power generation channel cannot work independently, so the system reliability is not high.
The high-power aviation start-power generation control device adopts interlocking control, and the control line of the starter contactor is interlocked through the input signal line of the aero generator, combined with the on-off contactor, to avoid malfunction of the contactor, and to achieve isolation between the starting circuit and the power generation circuit.
It improves the reliability of the system, reduces the failure rate of contactors, avoids the problem of easy adhesion of contacts in the conversion contactors, and ensures independent working between the starting channel and the power generation channel.
Smart Images
Figure CN119813850A_ABST
Abstract
Description
Technical Field
[0001] The present application belongs to the field of aviation power system control technology, and in particular relates to a high-power aviation starting-generation control device with interlocking control. Background Art
[0002] The aviation starting / generating control device mainly receives control instructions from the starting controller and the generator controller to drive the corresponding internal contactors to attract, thereby realizing the on-off control and conversion control of the starting channel and the generating channel. It is usually realized by combining a starting conversion contactor with a generator contactor.
[0003] When the system is in the starting state, the starting / generating control device is controlled by the starting controller, so that the internal control relay, excitation contactor, and starting / generating conversion contactor are energized, and the starting excitation circuit and power circuit are connected. The starting controller provides the starting generator with excitation current and starting current through the normally closed contacts of the excitation contactor and the starting / generating conversion contactor to realize the starting control function. After the start is completed, the internal control relay, excitation contactor, and starting / generating conversion contactor of the starting / generating control device are released, and the starting excitation circuit and power circuit are disconnected.
[0004] When the system is in the power generation state, the starter / generator control device is controlled by the generator controller, so that the internal generator contactor is energized, the starter / generator conversion contactor and the excitation contactor are released, the generator excitation circuit and the power circuit are connected, and the generator controller provides the excitation current to the starter generator through the normally closed contact of the excitation contactor. The starter generator supplies power to the busbar through the normally closed contact of the starter / generator conversion contactor and the main contact of the generator contactor. The control circuit is shown in Figure 1 The conversion contactor in this configuration has a high starting generator power level, a large starting current, a high failure rate, and easy contact adhesion; at the same time, the starting contactor is turned on after the starting control command is issued, and it cannot ensure that the starting channel and the power generation channel work independently, and the system reliability is not high.
[0005] In order to achieve the isolation of the starting and power generation channels, the starting conversion contactor in this configuration must use a conversion contactor, which has a complex structure and low reliability. In addition, the system starting current is large, and the contactor failure rate is very high during use. Since the starting circuit and the power generation circuit share the starting / power generation conversion contactor, the failure of the contactor will affect the normal power generation function, making the system reliability low. Summary of the invention
[0006] The purpose of the present application is to provide a high-power aviation starting-generating control device with interlocking control to solve the problem of low reliability of existing aviation starting / generating control devices.
[0007] The technical solution of the present application is: an interlocked controlled high-power aviation starting-generation control device, comprising a control relay, a starting contactor, an excitation contactor and a generating contactor; the input end of the starting contactor is connected to the input signal of the starting controller, and the output end is connected to the input end of the generating contactor; the input end of the control relay is connected to the input end of the contact and the input end and output end of the coil are respectively connected to the coil control circuits of the starting contactor and the excitation contactor; the coil control negative end of the control relay is interlocked with the auxiliary contact of the generating contactor; the main contact input end of the generating contactor is connected to the power input of the aircraft generator; and the aircraft generator input signal circuit is interlocked with the control circuit of the starting contactor; the output end of the generating contactor outputs the power generation channel output signal.
[0008] Preferably, it also includes a transformer, which is connected to the aircraft generator input signal line. The transformer is provided with a power generation channel transformer output signal, and the power generation channel transformer output signal can be sensed with the current data on the aircraft generator input signal line.
[0009] Preferably, a sampling circuit is also provided on the aircraft generator input signal line, and the sampling circuit includes a three-way sampling POR switch.
[0010] Preferably, the input end of the excitation contactor is connected to the excitation signal and outputs the excitation output signal.
[0011] Preferably, the power generation contactor is also provided with a main contactor status signal acquisition circuit, and the main contactor status signal acquisition circuit is connected to the normally open contact of the power generation contactor.
[0012] Preferably, the power generation contactor is also provided with a main contactor control circuit, and the main contactor control circuit includes a positive control signal circuit and a negative control signal circuit.
[0013] The interlocked high-power aviation starting-generation control device of the present application interlocks and controls the aircraft generator input signal circuit and the control circuit of the starting contactor, connects the starting control circuit in series with the normally closed auxiliary point of the generating contactor to avoid malfunction of the contactor, and combines the on-off type contactor to avoid the problem of high failure rate of the switching type contactor's contacts being easily stuck, thereby achieving isolation of the starting circuit and the generating circuit, and improving the reliability of the system. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] In order to more clearly illustrate the technical solution provided by the present application, the following is a brief introduction to the accompanying drawings. Obviously, the accompanying drawings described below are only some embodiments of the present application.
[0015] Figure 1 It is a circuit structure diagram in the background technology;
[0016] Figure 2This is a schematic diagram of the overall circuit structure of this application. DETAILED DESCRIPTION
[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only 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.
[0018] A high-power aviation starting-generating control device with interlocking control, such as Figure 2 , including control relay, starting contactor, excitation contactor and generator contactor. The input end of the starting contactor is connected to the input signal of the starting controller, and the output end is connected to the input end of the generator contactor; the input end of the control relay is connected to the input end of the contact and the input end and output end of the coil are respectively connected to the coil control circuit of the starting contactor and the excitation contactor; the coil control negative end of the control relay is interlocked with the auxiliary contact of the generator contactor; the main contact input end of the generator contactor is connected to the power input of the aircraft generator; and the input signal circuit of the aircraft generator is interlocked with the control circuit of the starting contactor, that is, the starting signal is connected in series with the normally closed auxiliary point of the generator contactor; the output end of the generator contactor outputs the output signal of the power generation channel.
[0019] The starting control circuit is connected in series with the normally closed auxiliary point of the generating contactor to avoid false operation of the contactor. Combined with the on-off contactor, the problem of high failure rate of the switching contactor contacts due to sticking is avoided, the starting circuit and the generating circuit are isolated, and the reliability of the system is improved.
[0020] Preferably, it also includes a transformer, which is connected to the aircraft generator input signal line. The transformer is provided with a power generation channel transformer output signal. The power generation channel transformer output signal can sense the current data on the aircraft generator input signal line, thereby monitoring the input state of the aircraft generator input signal.
[0021] Preferably, a sampling circuit is also provided on the aircraft generator input signal line, and the sampling circuit includes a three-way sampling POR switch, and the state of the aircraft generator input signal line is monitored through the sampling circuit.
[0022] Preferably, the input end of the excitation contactor is connected to the excitation signal and outputs the excitation output signal, thereby performing excitation signal control.
[0023] Preferably, a main contactor status signal acquisition circuit is also provided on the generating contactor, and the main contactor status signal acquisition circuit is connected to the normally open contact of the generating contactor; when receiving the control signal of the main receiver, the normally open contact is closed, and the main contactor status signal acquisition circuit outputs the current state.
[0024] Preferably, a main contactor control circuit is also provided on the generator contactor, and the main contactor control circuit includes a positive control signal circuit and a negative control signal circuit. When the positive control signal circuit and the negative control signal circuit both generate signals into the generator contactor, the generator contactor receives the signal and performs corresponding control.
[0025] Finally, it should be noted that: the drawings of the embodiments disclosed in the present invention only involve structures related to the embodiments disclosed in the present invention, and other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of the present invention can be combined with each other;
[0026] Finally: The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.
Claims
1. A high-power aviation starting-generating control device with interlocking control, characterized in that: It comprises a control relay, a starting contactor, an excitation contactor and a generating contactor; the input end of the starting contactor is connected to the input signal of the starting controller, and the output end is connected to the input end of the generating contactor; the input end of the control relay is connected to the input end of the contact and the input end and the output end of the coil are respectively connected to the coil control circuits of the starting contactor and the excitation contactor; the coil control negative end of the control relay is interlocked with the auxiliary contact of the generating contactor; the main contact input end of the generating contactor is connected to the power input of the aircraft generator; and the input signal circuit of the aircraft generator is interlocked with the control circuit of the starting contactor; the output end of the generating contactor outputs the output signal of the generating channel.
2. The interlocking controlled high-power aviation starting-generating control device according to claim 1, characterized in that: It also includes a mutual inductor, which is connected to the aircraft generator input signal line. The mutual inductor is provided with a power generation channel mutual inductor output signal, and the power generation channel mutual inductor output signal can be sensed with the current data on the aircraft generator input signal line.
3. The interlocking controlled high-power aviation starting-generating control device according to claim 1, characterized in that: A sampling circuit is also provided on the aircraft generator input signal line, and the sampling circuit includes a three-way sampling POR switch.
4. The interlocking controlled high-power aviation starting-generating control device according to claim 1, characterized in that: The input end of the excitation contactor is connected to the excitation signal and outputs the excitation output signal.
5. The interlocking controlled high-power aviation starting-generating control device according to claim 1, characterized in that: The power generation contactor is also provided with a main contactor state signal acquisition circuit, and the main contactor state signal acquisition circuit is connected to the normally open contact of the power generation contactor.
6. The interlocking controlled high-power aviation starting-generating control device according to claim 1, characterized in that: The power generation contactor is also provided with a main contactor control circuit, which includes a positive control signal circuit and a negative control signal circuit.