Intelligent control acquisition device for marine permanent magnet motor

Abstract

The utility model relates to an intelligent control acquisition device for a marine permanent magnet motor, which includes an X1 junction box, an X2 junction box, an X3 junction box, an X4 junction box, and a main junction box; the X1 junction box, the X2 junction box, the X3 junction box, and the X4 junction box are respectively installed on the right side surface of the main junction box by screws; the X1 junction box, the X2 junction box, and the X3 junction box are all weak current junction boxes; the X1 junction box is used for leading wires for bearing temperature measurement and water leakage alarm; the X2 junction box is used for leading wires for winding temperature measurement; the X3 junction box is for resolver wiring; the X4 junction box is a heating tape, and the X4 junction box is a strong current junction box. The utility model is easy for later maintenance and repair; effectively monitors the health status of the motor operation; combines with a vector control system to make the permanent magnet motor operate under reasonable working conditions; effectively prevents the internal windings of the motor from condensing.

Description

Technical Field

[0001] This utility model relates to the field of marine permanent magnet motor technology, and more specifically to an intelligent control and acquisition device for marine permanent magnet motors. Background Technology

[0002] Aiming at the national "dual-carbon" strategy and the green and low-carbon development needs of the Yangtze River shipping industry, and accelerating the implementation of the Yangtze River Shipping Group's "dual-carbon" strategy special plan and "one enterprise, one policy" approach, the primary goal is to support the improvement of the economy and safety of Yangtze River vessels with the technological advantages of new power systems. Based on the functional requirements and operating environment characteristics of Yangtze River vessels, research on integrated electric propulsion systems is being conducted to determine the optimal overall scheme for ship electric propulsion systems. Typical marine direct-drive permanent magnet motors are being developed and standardized product series are being established. This will comprehensively enhance the overall innovation and R&D design capabilities and key equipment manufacturing capabilities of the Yangtze River Shipping Group, strengthen the company's core competitiveness, and continuously lead the high-quality development of Yangtze River shipping. Marine direct-drive permanent magnet motors will become the development direction of green power systems for inland waterway vessels in my country. This practical marine direct-drive permanent magnet motor has no reduction gearbox, directly drives the propeller, and propels 10,000-ton Yangtze River vessels, achieving optimized matching between ship, engine, and propeller. It supports energy saving, consumption reduction, and efficiency improvement for Yangtze River vessels, and has advantages such as low-speed high torque, high efficiency, high power factor, low vibration, and low noise. The marine direct-drive permanent magnet motor uses built-in permanent magnets with an excellent magnetic circuit structure and good field weakening speed regulation capability. Currently, commercial ships are powered by main propulsion diesel engines, with diesel generator sets supplying electricity to the entire ship. This presents problems such as large peak capacity, power quality stability, and safety and reliability. Marine direct-drive permanent magnet motors have replaced diesel engine propulsion motors, enabling low-speed navigation. This is more conducive to energy conservation and emission reduction, saving transportation costs and contributing to the sustainable development of shipping companies.

[0003] The shortcomings of existing technology are:

[0004] 1. The existing junction box terminals are messy and lack clear markings, making it easy to connect the wrong wires during maintenance.

[0005] 2. The junction box cannot collect data in real time; users need to connect the signal line to the corresponding control center to collect data.

[0006] 3. When the signal line, temperature sensor, and rotary transformer are routed together, electromagnetic interference can cause signal distortion.

[0007] 4. The orientation of the junction box makes it difficult to maintain and repair later. Summary of the Invention

[0008] This utility model addresses the aforementioned problems by providing an intelligent control and data acquisition device for marine permanent magnet motors. Its purpose is to facilitate subsequent maintenance and repair; effectively monitor the health status of the motor operation; combine with a vector control system to ensure the permanent magnet motor operates under reasonable working conditions; and effectively prevent condensation on the internal windings of the motor.

[0009] To solve the above problems, the technical solution provided by this utility model is as follows:

[0010] The intelligent control and acquisition device for marine permanent magnet motors includes junction boxes X1, X2, X3, and X4, and a main junction box, wherein:

[0011] The X1, X2, X3, and X4 junction boxes are respectively installed on the right side of the main junction box by screws; the X1, X2, and X3 junction boxes are all low-voltage junction boxes; the X1 junction box is used for bearing temperature measurement and water leakage alarm leads; the X2 junction box is used for winding temperature measurement leads; the X3 junction box is for rotary transformer wiring; the X4 junction box is for heating strips and is a high-voltage junction box.

[0012] Preferably, each of the X1 junction box, the X2 junction box, the X3 junction box, and the X4 junction box is equipped with an LCD panel for real-time display of the collected motor-related parameter information.

[0013] Preferably, the X1 junction box, the X2 junction box, the X3 junction box, and the X4 junction box are installed at a 20-degree angle to the vertical direction.

[0014] Preferably, the X1 junction box has 8 terminals, of which: white Z11 terminal, red Z12 terminal, and red Z13 terminal are load-side bearing temperature measurement terminals; white Z21 terminal, red Z22 terminal, and red Z23 terminal are non-load-side bearing temperature measurement terminals; and black S1 terminal and black S2 terminal are water leakage alarm terminals.

[0015] Preferably, the X2 junction box has 18 terminals, in the following order: 3 common U-phase terminals: white U11 terminal, red U12 terminal, and red U13 terminal; 3 spare U-phase terminals: white U21 terminal, red U22 terminal, and red U23 terminal; 3 common V-phase terminals: white V11 terminal, red V12 terminal, and red V13 terminal; 3 spare V-phase terminals: white V21 terminal, red V22 terminal, and red V23 terminal; 3 common W-phase terminals: white W11 terminal, red W12 terminal, and red W13 terminal; 3 spare W-phase terminals: white W21 terminal, red W22 terminal, and red W23 terminal.

[0016] Preferably, the terminals of the X3 junction box are as follows: red excitation positive R1 terminal, black excitation negative R2 terminal, yellow cosine positive R3 terminal, green cosine negative R4 terminal, white sine positive R5 terminal, and blue sine negative R6 terminal.

[0017] Preferably, the terminals of the X4 junction box are, in sequence: red L1 terminal and red L2 terminal.

[0018] Compared with the prior art, this utility model has the following advantages:

[0019] 1. The junction boxes of this utility model are all separate junction boxes and are not connected to the main junction box. Strong and weak currents are separated, the wiring is clear and easy to understand, and each junction box is equipped with a separate terminal and wiring diagram. Each small junction box is designed to be disassembled, which makes it easy to maintain and repair later.

[0020] 2. The X1 junction box and X2 junction box of this utility model are respectively the bearing and winding temperature measuring leads, which can effectively monitor the health status of the motor operation.

[0021] 3. The X3 junction box of this utility model is connected to a rotary transformer. The rotary transformer can accurately detect the rotor position of the permanent magnet motor and, combined with the vector control system, allow the permanent magnet motor to operate under reasonable working conditions.

[0022] 4. The four junction boxes of this utility model are heated and connected separately from the other three low-voltage junction boxes, which reduces electromagnetic interference, meets the electromagnetic compatibility standards of ships, reduces the risk of low-voltage signals being damaged by high voltage, and the heating belt can effectively prevent condensation on the internal windings of the motor. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the X1 junction box structure according to a specific embodiment of the present utility model;

[0024] Figure 2 This is a schematic diagram of the X2 junction box structure according to a specific embodiment of the present utility model;

[0025] Figure 3 This is a schematic diagram of the X3 junction box structure according to a specific embodiment of the present utility model;

[0026] Figure 4 This is a schematic diagram of the X4 junction box structure according to a specific embodiment of the present utility model.

[0027] Among them: 701.X1 junction box, 702.X2 junction box, 703.X3 junction box, 704.X4 junction box, Z11. White Z11 terminal block, Z12. Red Z12 terminal block, Z13. Red Z13 terminal block, Z21. White Z21 terminal block, Z22. Red Z22 terminal block, Z23. Red Z23 terminal block, S1. Black S1 terminal block, S2. Black S2 terminal block, U11. White U11 terminal block, U12. Red U12 terminal block, U13. Red U13 terminal block, U21. White U21 terminal block, U22. Red U22 terminal block, U23. Red U23 terminal block, V11. White V11 terminal block, V12. Red V12 terminal block, V13. Red V13 terminal block, V21. White V21 terminal block, V22. Red V22 terminal block, V23. Red V23 terminal block, W11. White W11 terminal block, W12. Red W12 terminal block, W13. Red W13 terminal block, W21. White W21 terminal block, W22. Red W22 terminal block, W23. Red W23 terminal block, R1. Red excitation positive R1 terminal block, R2. Black excitation negative R2 terminal block, R3. Yellow cosine positive R3 terminal block, R4. Green cosine negative R4 terminal block, R5. White sine positive R5 terminal block, R6. Blue sine negative R6 terminal block, L1. Red L1 terminal block, L2. Red L2 terminal block Detailed Implementation

[0028] The present invention will be further illustrated below with reference to specific embodiments. It should be understood that these embodiments are only for illustrating the present invention and are not intended to limit the scope of the present invention. After reading the present invention, any modifications of the present invention in various equivalent forms by those skilled in the art will fall within the scope defined by the appended claims.

[0029] The intelligent control and acquisition device for marine permanent magnet motors includes X1 junction box 701, X2 junction box 702, X3 junction box 703, X4 junction box 704, and a main junction box, wherein:

[0030] Junction boxes X1 701, X2 702, X3 703, and X4 704 are respectively installed on the right side of the main junction box using screws; junction boxes X1 701, X2 702, and X3 703 are all low-voltage junction boxes; junction box X1 701 is used for bearing temperature measurement and water leakage alarm leads; junction box X2 702 is used for winding temperature measurement leads; junction box X3 703 is for rotary transformer wiring; junction box X4 704 is for heating strips and is a high-voltage junction box.

[0031] It should be noted that the X1 junction box 701, X2 junction box 702, X3 junction box 703, and X4 junction box 704 are all equipped with LCD panels, which are used to display the collected motor-related parameter information in real time, play an intelligent detection and control role for the entire motor, and are the core components for the normal operation of the permanent magnet motor.

[0032] It should be further noted that junction boxes X1 (701), X2 (702), X3 (703), and X4 (704) should be installed at a 20-degree angle to the vertical direction to facilitate user wiring.

[0033] It should be further explained that junction boxes X1 (701), X2 (702), X3 (703), and X4 (704) are all separate junction boxes, not connected to the main junction box, separating strong and weak currents, making the wiring clear and concise. Each junction box is equipped with individual terminals and a wiring diagram. Each small junction box has a detachable design, facilitating future maintenance and repair. Junction boxes X1 (701) and X2 (702) are for bearing and winding temperature measurement leads, respectively, effectively monitoring the motor's operating health. The leakage alarm lead from the machine base end ring is introduced into junction box X1 (701), allowing users to remotely monitor the motor simply by connecting the corresponding cables. Junction box X3 (703) is for the rotary transformer, which accurately detects the permanent magnet motor rotor position, allowing the permanent magnet motor to operate under optimal conditions in conjunction with the vector control system. Junction box X4 (704) is for the heating element, which is 220V and separate from the three previous weak current junction boxes. The heating element's function is to prevent the internal windings of the motor from bridging.

[0034] like Figure 1 As shown, it should be noted that the X1 junction box 701 has 8 terminals, of which: white terminal Z11, red terminal Z12, and red terminal Z13 are load-side bearing temperature measurement terminals; white terminal Z21, red terminal Z22, and red terminal Z23 are non-load-side bearing temperature measurement terminals; and black terminals S1 and S2 are water leakage alarm terminals.

[0035] like Figure 2As shown, it should be noted that the X2 junction box 702 has 18 terminals, as follows: 3 common U-phase terminals: white U11 terminal U11, red U12 terminal U12, and red U13 terminal U13; 3 spare U-phase terminals: white U21 terminal U21, red U22 terminal U22, and red U23 terminal U23; 3 common V-phase terminals: white V11 terminal V11, red V12 terminal V11, and red V12 terminal V11. 12. Red V13 terminal block; 3 spare V-phase terminals: white V21 terminal block, red V22 terminal block, red V23 terminal block; 3 common W-phase terminals: white W11 terminal block, red W12 terminal block, red W13 terminal block; 3 spare W-phase terminals: white W21 terminal block, red W22 terminal block, red W23 terminal block.

[0036] like Figure 3 As shown, it should be noted that the terminals of the X3 junction box 703 are as follows: Red excitation positive R1 terminal R1, Black excitation negative R2 terminal R2, Yellow cosine positive R3 terminal R3, Green cosine negative R4 terminal R4, White sine positive R5 terminal R5, and Blue sine negative R6 terminal R6.

[0037] like Figure 4 As shown, it should be noted that the terminals of the X4 junction box 704 are, in order: red L1 terminal L1 and red L2 terminal L2.

[0038] In the above detailed description, various features are combined together in a single embodiment to simplify this disclosure. This approach to disclosure should not be construed as reflecting an intention that embodiments of the claimed subject matter require more features than are explicitly stated in each claim. Rather, as reflected in the appended claims, the present invention is in a state with fewer features than all of the disclosed individual embodiments. Therefore, the appended claims are hereby clearly incorporated into the detailed description, wherein each claim stands alone as a preferred embodiment of the present invention.

[0039] The disclosed embodiments have been described above to enable any person skilled in the art to implement or use this invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be applied to other embodiments without departing from the spirit and scope of this disclosure. Therefore, this disclosure is not limited to the embodiments given herein, but is consistent with the widest scope of the principles and novel features disclosed in this application.

[0040] The foregoing description includes examples of one or more embodiments. It is certainly impossible to describe all possible combinations of components or methods in order to describe the above embodiments, but those skilled in the art will recognize that further combinations and arrangements of the various embodiments are possible. Therefore, the embodiments described herein are intended to cover all such changes, modifications, and variations that fall within the scope of the appended claims. Furthermore, the term "comprising" as used in the specification or claims is interpreted in a manner similar to the term "including," as interpreted when used as a conjunction in the claims. Additionally, the use of any term "or" in the specification of the claims is intended to mean "non-exclusive or."

[0041] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of this utility model. It should be understood that the above description is only a specific embodiment of this utility model and is not intended to limit the scope of protection of this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.

Claims

1. An intelligent control and data acquisition device for marine permanent magnet motors, characterized in that: Includes junction box X1 (701), junction box X2 (702), junction box X3 (703), junction box X4 (704), and main junction box, wherein: The X1 junction box (701), X2 junction box (702), X3 junction box (703), and X4 junction box (704) are respectively installed on the right side of the main junction box by screws; the X1 junction box (701), X2 junction box (702), and X3 junction box (703) are all low-voltage junction boxes; the X1 junction box (701) is used for bearing temperature measurement and water leakage alarm leads; the X2 junction box (702) is used for winding temperature measurement leads; the X3 junction box (703) is for rotary transformer wiring; the X4 junction box (704) is for heating belts and is a high-voltage junction box.

2. The intelligent control and acquisition device for marine permanent magnet motors according to claim 1, characterized in that: The X1 junction box (701), X2 junction box (702), X3 junction box (703), and X4 junction box (704) are all equipped with LCD panels for real-time display of collected motor-related parameter information.

3. The intelligent control and acquisition device for marine permanent magnet motors according to claim 1, characterized in that: The X1 junction box (701), the X2 junction box (702), the X3 junction box (703), and the X4 junction box (704) are installed at a 20-degree angle to the vertical direction.

4. The intelligent control and acquisition device for marine permanent magnet motors according to claim 1, characterized in that: The X1 junction box (701) is provided with 8 terminals, of which: white Z11 terminal (Z11), red Z12 terminal (Z12), and red Z13 terminal (Z13) are load-side bearing temperature measurement terminals; white Z21 terminal (Z21), red Z22 terminal (Z22), and red Z23 terminal (Z23) are non-load-side bearing temperature measurement terminals; and black S1 terminal (S1) and black S2 terminal (S2) are water leakage alarm terminals.

5. The intelligent control and acquisition device for marine permanent magnet motors according to claim 1, characterized in that: The X2 junction box (702) has 18 terminals, in the following order: 3 common U-phase terminals: white U11 terminal (U11), red U12 terminal (U12), and red U13 terminal (U13); 3 spare U-phase terminals: white U21 terminal (U21), red U22 terminal (U22), and red U23 terminal (U23); 3 common V-phase terminals: white V11 terminal (V11), red V12 terminal (V12), and red U13 terminal (U13). V13 terminal block (V13); 3 spare V-phase terminal blocks: white V21 terminal block (V21), red V22 terminal block (V22), red V23 terminal block (V23); 3 common W-phase terminal blocks: white W11 terminal block (W11), red W12 terminal block (W12), red W13 terminal block (W13); 3 spare W-phase terminal blocks: white W21 terminal block (W21), red W22 terminal block (W22), red W23 terminal block (W23).

6. The intelligent control and acquisition device for marine permanent magnet motors according to claim 1, characterized in that: The terminals of the X3 junction box (703) are as follows: red excitation positive R1 terminal (R1), black excitation negative R2 terminal (R2), yellow cosine positive R3 terminal (R3), green cosine negative R4 terminal (R4), white sine positive R5 terminal (R5), and blue sine negative R6 terminal (R6).

7. The intelligent control and acquisition device for marine permanent magnet motors according to claim 1, characterized in that: The terminals of the X4 junction box (704) are, in order: red L1 terminal (L1) and red L2 terminal (L2).

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