A high-power motor using a resolver

Abstract

The utility model discloses a kind of high-power motor using resolver, it relates to motor technical field.The high-power motor using resolver, including main unit and resolver unit, the resolver unit is set on main unit, the main unit is provided with motor rotor, the resolver unit includes cover, resolver and connecting piece.The high-power motor using resolver, using resolver carries out motor rotor position and rotational speed detection, compared with traditional detection mode, with higher detection accuracy and stronger anti-interference ability.Resolver works through electromagnetic induction principle, is not influenced by dust, oil stain, electromagnetic interference and other environmental factors, can work stably under harsh industrial environment, provides accurate, reliable feedback signal for motor control system, realizes the accurate speed regulation and stable operation of motor, significantly improves the operating efficiency and control precision of motor.

Description

Technical Field

[0001] This utility model relates to the field of motor technology, specifically to a high-power motor using a rotary transformer. Background Technology

[0002] In modern industrial production, high-power motors are widely used in various fields, such as power, metallurgy, chemical industry, and new energy electric vehicles. For high-power motors, accurately detecting the position and speed of the motor rotor is crucial, as it directly affects the motor's operating efficiency, stability, and control precision.

[0003] Currently, for some high-power motors on the market, traditional detection methods, such as photoelectric encoders, are easily affected by factors such as dust, oil, and electromagnetic interference in complex industrial environments. This leads to decreased detection accuracy and signal loss, failing to provide accurate feedback to the motor control system and consequently affecting the motor's speed regulation performance and operational stability. Furthermore, some detection devices have complex structures, making installation and maintenance inconvenient and increasing operating costs for businesses.

[0004] Traditional detection methods are easily affected by external factors, leading to decreased detection accuracy and signal loss, which cannot provide accurate feedback to the motor control system, thus affecting the speed regulation performance and operational stability of the motor. In addition, the detection device has a complex structure, is inconvenient to install and maintain, and increases the operating costs of enterprises. Utility Model Content

[0005] To address the shortcomings of existing technologies, this invention provides a high-power motor using a rotary transformer, which solves the problems of traditional detection methods being easily affected by external factors, leading to decreased detection accuracy, signal loss, and inability to provide accurate feedback to the motor control system, thereby affecting the motor's speed regulation performance and operational stability. Furthermore, the detection device has a complex structure, is inconvenient to install and maintain, and increases the operating costs of enterprises.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a high-power motor employing a resolver, comprising a main unit and a resolver unit, wherein the resolver unit is mounted on the main unit, the main unit is provided with a motor rotor, and the resolver unit comprises:

[0007] Enclosure;

[0008] A rotary transformer, located inside the housing, is used to provide feedback to the control system;

[0009] A connector is located inside the rotary transformer and is plugged into the main unit to rotate synchronously with the motor rotor.

[0010] Preferably, the main body unit is provided with an outer shell, the outer shell is provided with heat dissipation fins and connecting bolts evenly distributed in a ring on the outside, the bottom of the outer shell is connected with a support foot, and the inner side of the outer shell is provided with a partition plate.

[0011] Preferably, a motor stator is fixedly disposed on the inner side of the housing, and a motor rotor is disposed on the inner side of the motor stator.

[0012] Preferably, the main body unit is provided with a cover plate, which is inserted into the inner side of one end of the outer shell by connecting bolts. A rotating shaft is inserted into the inner side of the cover plate, and the rotating shaft passes through the motor rotor and is inserted into the inner side of the partition plate.

[0013] Preferably, a retaining ring is connected to the cover, and the retaining ring is inserted into the inner side of the other end of the cover by a connecting bolt.

[0014] Preferably, the rotary transformer is provided with a rotary stator and a rotary rotor, the rotary stator is fixed inside the housing, and the rotary rotor is sleeved on the connector.

[0015] Preferably, the connector is inserted into the inside of the rotating shaft.

[0016] This technical solution describes the application of a resolver in a drive motor or generator for new energy vehicles. It mainly comprises a resolver rotor and a resolver stator. During use, the resolver rotor is mounted on the motor shaft, and the resolver stator is installed on the motor housing. If any winding (or wire) is damaged by impact, causing a break, the product will immediately fail and become unusable. If any winding of the resolver breaks during vehicle operation, the product will also fail, the motor controller will not receive the angle signal from the resolver output, the controller will immediately report an error, the motor will stop running, and the vehicle will be unable to move. This utility model discloses a high-power motor using a resolver, which has the following beneficial effects:

[0017] Using a rotary transformer for motor rotor position and speed detection offers higher accuracy and stronger anti-interference capabilities compared to traditional methods. Operating on the principle of electromagnetic induction, the rotary transformer is unaffected by environmental factors such as dust, oil, and electromagnetic interference, enabling stable operation in harsh industrial environments. It provides precise and reliable feedback signals to the motor control system, achieving accurate speed regulation and stable operation, significantly improving motor efficiency and control precision. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the main unit of this utility model;

[0021] Figure 3 This is a cross-sectional structural diagram of the main unit of this utility model;

[0022] Figure 4 This is a schematic diagram of the structure of the resolver unit of this utility model.

[0023] In the diagram: 1. Main unit; 11. Outer shell; 111. Heat sink fins; 112. Support feet; 113. Connecting bolts; 114. Partition plate; 115. Motor stator; 116. Motor rotor; 12. Cover plate; 13. Rotating shaft; 2. Resolver unit; 21. Cover; 211. Insert ring; 22. Resolver; 221. Resolver stator; 222. Resolver rotor; 23. Connecting parts. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions in the embodiments of this utility model are described clearly and completely. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0025] This application provides a high-power motor using a rotary transformer. In the industry, high-power motors are generally defined as those between 150kW and 300kW. Our high-power motor using a rotary transformer solves the problems of traditional detection methods, which are easily affected by external factors, leading to decreased detection accuracy, signal loss, and inability to provide accurate feedback to the motor control system. This affects the motor's speed regulation performance and operational stability. Furthermore, traditional detection devices are complex in structure, inconvenient to install and maintain, and increase operating costs for enterprises. This application improves installation and maintenance convenience and overall operational stability to meet the increasingly stringent performance requirements of modern industry for high-power motors.

[0026] This utility model discloses a high-power motor using a rotary transformer.

[0027] Example 1

[0028] According to the appendix Figure 1-4 As shown, a high-power motor employing a rotary transformer includes a main unit 1 and a resolver unit 2. The resolver unit 2 is mounted on the main unit 1, which has a motor rotor 116. The resolver unit 2 includes a housing 21, a rotary transformer 22, and a connector 23. The rotary transformer 22 is located inside the housing 21 and is used to provide feedback to the control system. The connector 23 is located inside the rotary transformer 22 and is inserted into the main unit 1 to rotate synchronously with the motor rotor 116.

[0029] Using a rotary transformer for rotor position and speed detection in a motor offers higher accuracy and stronger anti-interference capabilities compared to traditional methods. Operating on the principle of electromagnetic induction, the rotary transformer is unaffected by environmental factors such as dust, oil, and electromagnetic interference, enabling stable operation in harsh industrial environments. It provides precise and reliable feedback signals to the motor control system, achieving accurate speed regulation and stable operation, significantly improving motor efficiency and control precision.

[0030] Furthermore, the main unit 1 is provided with a shell 11, and the outer side of the shell 11 is provided with heat dissipation fins 111 and connecting bolts 113 evenly distributed in a ring. The bottom of the shell 11 is connected with a support foot 112, and the inner side of the shell 11 is provided with a partition plate 114.

[0031] Furthermore, a motor stator 115 is fixedly installed inside the outer casing 11, and a motor rotor 116 is installed inside the motor stator 115.

[0032] Specifically disclosed, the main unit 1 is provided with a cover plate 12, which is inserted into the inner side of one end of the outer shell 11 by a connecting bolt 113. A rotating shaft 13 is inserted into the inner side of the cover plate 12, and the rotating shaft 13 passes through the motor rotor 116 and is inserted into the inner side of the partition plate 114.

[0033] Specifically disclosed, a ring 211 is connected to the cover 21, and the ring 211 is inserted into the inner side of the other end of the outer shell 11 by a connecting bolt 113.

[0034] It should be emphasized that the rotary transformer 22 is provided with a resolver stator 221 and a resolver rotor 222. The resolver stator 221 is fixed inside the housing 21, and the resolver rotor 222 is sleeved on the connector 23.

[0035] Example 2

[0036] According to the appendix Figure 1-4As shown, a high-power motor employing a rotary transformer includes a main unit 1 and a resolver unit 2. The resolver unit 2 is mounted on the main unit 1, which has a motor rotor 116. The resolver unit 2 includes a housing 21, a rotary transformer 22, and a connector 23. The rotary transformer 22 is located inside the housing 21 and is used to provide feedback to the control system. The connector 23 is located inside the rotary transformer 22 and is inserted into the main unit 1 to rotate synchronously with the motor rotor 116.

[0037] It should be emphasized that the connector 23 is inserted into the inside of the rotating shaft 13.

[0038] Working principle: Since the connector 23 is inserted into the inner side of the rotating shaft 13, and the resolver rotor 222 is sleeved on the connector 23, the resolver rotor 222 will rotate synchronously with the rotating shaft 13. The resolver stator 221 is fixed inside the housing 21 and remains stationary. As the resolver rotor 222 rotates, the relative position between the resolver rotor 222 and the resolver stator 221 changes. According to the principle of electromagnetic induction, an induced electromotive force is generated in the resolver stator 221. By analyzing and processing the frequency, phase, and other parameters of the induced electromotive force, the position and speed information of the motor rotor 116 can be accurately calculated. This information is converted into an electrical signal and fed back to the motor control system. The control system adjusts the motor's operating state in real time according to the feedback signal, such as adjusting the motor speed and torque, to achieve precise motor control.

[0039] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A high-power motor employing a resolver, comprising a main unit (1) and a resolver unit (2), wherein the resolver unit (2) is disposed on the main unit (1), characterized in that, The main unit (1) is provided with a motor rotor (116), and the resolver unit (2) includes: Casing (21); A rotary transformer (22), located inside the housing (21), is used to provide feedback to the control system; The connector (23) is located inside the rotary transformer (22) and is plugged into the main body unit (1) to rotate synchronously with the motor rotor (116).

2. A high-power motor employing a rotary transformer according to claim 1, characterized in that, The main unit (1) is provided with a shell (11), and the outer side of the shell (11) is provided with heat dissipation fins (111) and connecting bolts (113) evenly distributed in a ring. The bottom of the shell (11) is connected with a support foot (112), and the inner side of the shell (11) is provided with a partition plate (114).

3. A high-power motor employing a rotary transformer according to claim 2, characterized in that, A motor stator (115) is fixedly disposed on the inner side of the outer casing (11), and a motor rotor (116) is disposed on the inner side of the motor stator (115).

4. A high-power motor employing a rotary transformer according to claim 2, characterized in that, The main unit (1) is provided with a cover plate (12), which is inserted into the inner side of one end of the outer shell (11) by a connecting bolt (113). A rotating shaft (13) is inserted into the inner side of the cover plate (12), and the rotating shaft (13) passes through the motor rotor (116) and is inserted into the inner side of the partition plate (114).

5. A high-power motor employing a rotary transformer according to claim 1, characterized in that, A ring (211) is connected to the cover (21), and the ring (211) is inserted into the inner side of the other end of the outer shell (11) by a connecting bolt (113).

6. A high-power motor employing a rotary transformer according to claim 1, characterized in that, The rotary transformer (22) is provided with a rotary stator (221) and a rotary rotor (222). The rotary stator (221) is fixed inside the casing (21), and the rotary rotor (222) is sleeved on the connector (23).

7. A high-power motor employing a rotary transformer according to claim 1, characterized in that, The connector (23) is inserted into the inside of the rotating shaft (13).

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