Permanent magnet synchronous motor of multi-driver parallel drive winding

Abstract

The utility model relates to a permanent magnet synchronous motor with a multi-driver parallel driving winding, which comprises a permanent magnet synchronous motor and a winding arranged on a stator of the permanent magnet synchronous motor, 54 slots which are uniformly arranged at equal intervals and are used for inserting winding inserted lines are respectively arranged on the side body of the stator of the permanent magnet synchronous motor close to the inner side; the slots are sequentially a first slot to a fifty-fourth slot; the windings in the slots from the first slot to the fifty-fourth slot are connected with drivers with the corresponding number according to the power of the permanent magnet synchronous motor, so that one set of windings of one permanent magnet synchronous motor is connected with one or more drivers in parallel. According to the winding design designed by the utility model, a high-power motor can be driven by connecting a low-power driver in parallel, the application range is wide, and the operation is simple and convenient.

Description

Technical Field

[0001] The utility model belongs to the technical field of motor windings and relates to a permanent magnet synchronous motor with multiple drivers in parallel driving windings. Background Technique

[0002] Drivers (frequency converters) are limited by four main parameters of IGBT. IGBT (Insulated Gate Bipolar Transistor) is a power semiconductor device used to control large currents and high voltages. Its four main parameters are as follows:

[0003] 1. Maximum rated voltage: This refers to the maximum collector-emitter voltage that the IGBT can withstand under normal operating conditions. Exceeding this voltage may cause device damage.

[0004] 2. Maximum rated current: This refers to the maximum collector current that the IGBT can withstand under normal operating conditions. Exceeding this current may cause the device to overheat or be damaged.

[0005] 3. Maximum rated power: This refers to the maximum power that the IGBT can withstand under normal operating conditions. Exceeding this power may cause the device to overheat or be damaged.

[0006] 4. Switching speed: The switching speed of the IGBT refers to the time required to switch from on to off (or vice versa). A fast switching speed helps reduce power losses and improve efficiency, but too fast a switching speed may increase the transient voltage and current drops, leading to device damage.

[0007] As a driving component of the motor, the driver (frequency converter), and the IGBT as the core component of the driver, when the requirements for the IGBT core component are relatively high, small-power drivers often cannot directly drive high-power ones, resulting in the need for frequent manual adjustment during the production process, which is time-consuming, laborious, and increases the usage cost. Therefore, a permanent magnet synchronous motor with multiple drivers in parallel driving windings is designed. Content of the Utility Model

[0008] The purpose of the utility model is to overcome the deficiencies existing in the prior art and provide a permanent magnet synchronous motor with multiple drivers in parallel driving windings, which has a simple and reasonable structure, improves efficiency, reduces losses, enhances integration, has a wide application range, and is simple and convenient to operate.

[0009] The present utility model is realized through the following technical solutions: A permanent magnet synchronous motor with multiple drivers in parallel driving a winding, including a permanent magnet synchronous motor and a winding arranged on the stator of the permanent magnet synchronous motor. 54 slots with the same spacing and evenly arranged for inserting winding wires are respectively opened on the inner side of the stator of the permanent magnet synchronous motor. The slots are successively the first slot to the fifty-fourth slot; the windings in the first slot to the fifty-fourth slot are connected to the corresponding number of drivers according to the power of the permanent magnet synchronous motor, so that a set of windings of a permanent magnet synchronous motor is connected in parallel with one or more drivers.

[0010] Preferably, when one driver drives the permanent magnet synchronous motor of the present invention, the winding wires in the first slot, the tenth slot, the nineteenth slot, the twenty-eighth slot, the thirty-seventh slot and the forty-sixth slot are respectively connected to the A phase of the driver to form six U1 terminals; the winding wires in the fourth slot, the thirteenth slot, the twenty-second slot, the thirty-first slot, the fortieth slot and the forty-ninth slot are respectively connected to the B phase of the driver to form six V1 terminals; the winding wires in the seventh slot, the sixteenth slot, the twenty-fifth slot, the thirty-fourth slot, the forty-third slot and the fifty-second slot are respectively connected to the C phase of the driver to form six W1 terminals; the winding wires in the sixth slot, the fifteenth slot, the twenty-fourth slot, the thirty-third slot, the forty-second slot and the fifty-first slot form six U2 terminals; the winding wires in the third slot, the twelfth slot, the twenty-first slot, the thirtieth slot, the thirty-ninth slot and the forty-eighth slot form six W2 terminals; the winding wires in the ninth slot, the eighteenth slot, the twenty-seventh slot, the thirty-sixth slot, the forty-fifth slot and the fifty-fourth slot form six V2 terminals, and the six U2 terminals, the six V2 terminals and the six W2 terminals are connected together as the neutral point of the winding, also known as the star point.

[0011] Preferably, when two of the said drivers drive this permanent magnet synchronous motor, the windings on the stator of the permanent magnet synchronous motor are divided into a left lobe winding and a right lobe winding. Among them, the first driver is connected to the left lobe winding, and the three-phase outputs of this driver are A1, B1, and C1 respectively. The second driver is connected to the right lobe winding, and the three-phase outputs of this driver are A2, B2, and C2 respectively. The windings in the 28th slot, 37th slot, and 46th slot in the left lobe winding are embedded to form three U1 terminals, which are respectively connected to the A1 phase of the first driver. The windings in the 31st slot, 40th slot, and 49th slot in the left lobe winding are embedded to form three V1 terminals, which are respectively connected to the B1 phase of the first driver. The windings in the 34th slot, 43rd slot, and 52nd slot in the left lobe winding are embedded to form three W1 terminals, which are respectively connected to the C1 phase of the first driver. The 33rd slot, 42nd slot, 51st slot, 36th slot, 45th slot, 54th slot, 30th slot, 39th slot, and 48th slot in the left lobe winding respectively form 3 U2 terminals, 3 V2 terminals, and 3 W2 terminals, which are connected together as the neutral point of the first winding;

[0012] The windings in the 1st slot, 10th slot, and 19th slot in the right lobe winding are embedded to form three U1 terminals, which are respectively connected to the A2 phase of the second driver. The windings in the 4th slot, 13th slot, and 22nd slot in the right lobe winding are embedded to form three V1 terminals, which are respectively connected to the B2 phase of the second driver. The windings in the 7th slot, 16th slot, and 25th slot in the right lobe winding are embedded to form three W1 terminals, which are respectively connected to the C2 phase of the second driver. The 6th slot, 15th slot, 24th slot, 9th slot, 18th slot, 27th slot, 3rd slot, 12th slot, and 21st slot in the right lobe winding respectively form 3 U2 terminals, 3 V2 terminals, and 3 W2 terminals, which are connected together as the neutral point of the second winding.

[0013] Preferably, the winding embedding is arranged in a 54-slot 12-pole double-layer overlapping manner.

[0014] The beneficial effects of the present invention are as follows: This winding design of the present invention can drive a high-power motor by paralleling low-power drivers. Design a set of windings of a high-power motor to be split into N independent windings and connected to the drivers respectively. Originally, a high-power driver capable of outputting large current was required. Due to the parallel shunt effect in the circuit, at this time, only multiple low-power and low-current drivers need to be connected to drive this large motor, which reduces the requirements for the core component IGBT and can achieve smooth startup. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the present invention. Detailed implementation mode

[0016] To enable those of ordinary skill in the art to more clearly understand the purpose, technical solution and advantages of the present utility model, the present utility model will be further described below in conjunction with the accompanying drawings and embodiments.

[0017] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by terms such as "upper", "lower", "left", "right", "inner", "outer", "lateral", "vertical", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present utility model, rather than indicating or implying that the device or component referred to must have a specific orientation. Therefore, it should not be construed as a limitation to the present utility model.

[0018] The present utility model will be introduced in detail below with reference to the accompanying drawings: As Figure 1 shown, a permanent magnet synchronous motor with multiple drivers in parallel driving a winding includes a permanent magnet synchronous motor and a winding arranged on the stator of the permanent magnet synchronous motor. It is characterized in that: 54 slots with the same spacing and evenly arranged for inserting winding wires are respectively opened on the inner side of the stator of the permanent magnet synchronous motor. The slots are successively the first slot to the fifty-fourth slot; the winding wires in the first slot 1 to the fifty-fourth slot 54 are connected to the corresponding number of drivers according to the power of the permanent magnet synchronous motor, so as to realize that a set of windings of a permanent magnet synchronous motor is connected in parallel with one or more drivers.

[0019] When one of the drivers drives the permanent magnet synchronous motor, the winding wires in the first slot 1, the tenth slot 10, the nineteenth slot 19, the twenty-eighth slot 28, the thirty-seventh slot 37 and the forty-sixth slot 46 are respectively connected to the A phase of the driver to form six U1 terminals; the winding wires in the fourth slot 4, the thirteenth slot 13, the twenty-second slot 22, the thirty-first slot 31, the fortieth slot 40 and the forty-ninth slot 49 are respectively connected to the B phase of the driver to form six V1 terminals; the winding wires in the seventh slot 7, the sixteenth slot 16, the twenty-fifth slot 25, the thirty-fourth slot 34, the forty-third slot 43 and the fifty-second slot 52 are respectively connected to the C phase of the driver to form six W1 terminals; the winding wires in the sixth slot 6, the fifteenth slot 15, the twenty-fourth slot 24, the thirty-third slot 33, the forty-second slot 42 and the fifty-first slot 51 form six U2 terminals; the winding wires in the third slot 3, the twelfth slot 12, the twenty-first slot 21, the thirtieth slot 30, the thirty-ninth slot 39 and the forty-eighth slot 48 form six W2 terminals; the winding wires in the ninth slot 9, the eighteenth slot 18, the twenty-seventh slot 27, the thirty-sixth slot 36, the forty-fifth slot 45 and the fifty-fourth slot 54 form six V2 terminals, and the six U2 terminals, the six V2 terminals and the six W2 terminals are connected together as the neutral point of the winding, also known as the star point.

[0020] When the two drivers drive the permanent magnet synchronous motor, the windings on the stator of the permanent magnet synchronous motor are divided into a left lobe winding 56 and a right lobe winding 57. Among them, the first driver is connected to the left lobe winding 56, and the three-phase outputs of this driver are A1, B1, and C1 respectively. The second driver is connected to the right lobe winding 57, and the three-phase outputs of this driver are A2, B2, and C2 respectively. The windings in the 28th slot 28, 37th slot 37, and 46th slot 46 in the left lobe winding are embedded to form three U1 terminals, which are respectively connected to the A1 phase of the first driver. The windings in the 31st slot 31, 40th slot 40, and 49th slot 49 in the left lobe winding are embedded to form three V1 terminals, which are respectively connected to the B1 phase of the first driver. The windings in the 34th slot 34, 43rd slot 43, and 52nd slot 52 in the left lobe winding are embedded to form three W1 terminals, which are respectively connected to the C1 phase of the first driver. The 33rd slot 33, 42nd slot 42, 51st slot 51, 36th slot 36, 45th slot 45, 54th slot 54, 30th slot 30, 39th slot 39, and 48th slot 48 in the left lobe winding respectively form 3 U2 terminals, 3 V2 terminals, and 3 W2 terminals, which are connected together as the neutral point of the first winding;

[0021] The windings in the 1st slot 1, 10th slot 10, and 19th slot 19 in the right lobe winding are embedded to form three U1 terminals, which are respectively connected to the A2 phase of the second driver. The windings in the 4th slot 4, 13th slot 13, and 22nd slot 22 in the right lobe winding are embedded to form three V1 terminals, which are respectively connected to the B2 phase of the second driver. The windings in the 7th slot 7, 16th slot 16, and 25th slot 25 in the right lobe winding are embedded to form three W1 terminals, which are respectively connected to the C2 phase of the second driver. The 6th slot 6, 15th slot 15, 24th slot 24, 9th slot 9, 18th slot 18, 27th slot 27, 3rd slot 3, 12th slot 12, and 21st slot 21 in the right lobe winding respectively form 3 U2 terminals, 3 V2 terminals, and 3 W2 terminals, which are connected together as the neutral point of the second winding. The winding embedding adopts a 54-slot 12-pole double-layer overlapping arrangement.

[0022] Through the above arrangement, the work of connecting a set of windings of a motor to two drivers is completed. A high-power motor can be driven by connecting two low-power drivers, achieving a perfect start. Of course, the windings on the stator of the permanent magnet synchronous motor can also be divided into an upper lobe winding and a lower lobe winding, without any limitation.

[0023] And so on. Subsequently, as needed, it is possible to design the start-up of an ultra-high-power motor by paralleling multiple low-power drivers. The characteristic of the winding design is that it needs to be designed in a multi-path parallel form according to the number of drivers to facilitate our subsequent wiring. IGBT technology is constantly innovating and evolving, but it is also limited by the development and innovation of materials. The above-mentioned solution of driving a large motor by paralleling multiple drivers can also solve the driving problems of some special occasions and special models at present.

[0024] The specific embodiments described herein are only illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Any person familiar with this technology can modify or change the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or changes completed by those with ordinary knowledge in the relevant technical field without departing from the spirit and technical idea disclosed by the present invention should still be covered by the claims of the present invention.

Claims

1. A permanent magnet synchronous motor with multiple drivers driving windings in parallel, comprising a permanent magnet synchronous motor and windings arranged on a stator of the permanent magnet synchronous motor, characterized in that: The stator of the permanent magnet synchronous motor is provided with 54 slots with the same spacing and evenly arranged near the inner side for inserting winding wires, and the slots are sequentially the first slot to the fifty-fourth slot; the winding wires (55) in the first slot (1) to the fifty-fourth slot (54) are connected to a corresponding number of drivers according to the power size of the permanent magnet synchronous motor, so that a set of windings of a permanent magnet synchronous motor is connected to one or more drivers.

2. The permanent magnet synchronous motor with multiple drivers connected in parallel to drive windings according to claim 1, characterized in that: When the driver drives the permanent magnet synchronous motor, the winding wires in the first slot (1), the tenth slot (10), the nineteenth slot (19), the twenty-eighth slot (28), the thirty-seventh slot (37) and the forty-sixth slot (46) are respectively connected to the A phase of the driver to form six U1 terminals; the winding wires in the fourth slot (4), the thirteenth slot (13), the twenty-second slot (22), the thirty-first slot (31), the fortieth slot (40) and the forty-ninth slot (49) are respectively connected to the B phase of the driver to form six V1 terminals; the winding wires in the seventh slot (7), the sixteenth slot (16), the twenty-fifth slot (25), the thirty-fourth slot (34), the forty-third slot (43) and the fifty-second slot (52) are respectively connected to the C phase of the driver. Six W1 terminals are formed; the winding wires in the sixth slot (6), the fifteenth slot (15), the twenty-fourth slot (24), the thirty-third slot (33), the forty-second slot (42), and the fifty-first slot (51) form six U2 terminals; the winding wires in the third slot (3), the twelfth slot (12), the twenty-first slot (21), the thirtieth slot (30), the thirty-ninth slot (39), and the forty-eighth slot (48) form six W2 terminals; the winding wires in the ninth slot (9), the eighteenth slot (18), the twenty-seventh slot (27), the thirty-sixth slot (36), the forty-fifth slot (45), and the fifty-fourth slot (54) form six V2 terminals, and the six U2 terminals, the six V2 terminals, and the six W2 terminals are connected together as the winding neutral point, also known as the star point.

3. The permanent magnet synchronous motor with multiple drivers connected in parallel to drive windings according to claim 1, characterized in that: When two of the drivers drive the permanent magnet synchronous motor, the windings on the stator of the permanent magnet synchronous motor are divided into a left-lobe winding (56) and a right-lobe winding (57), wherein the first driver is connected to the left-lobe winding (56), and the output three phases of the driver are A1, B1, and C1 respectively; the second driver is connected to the right-lobe winding (57), and the output three phases of the driver are A2, B2, and C2 respectively; the windings in the twenty-eighth slot (28), the thirty-seventh slot (37), and the forty-sixth slot (46) of the left-lobe winding form three U1 ends, which are respectively connected to the A1 phase of the first driver; the thirty-first slot (31), the fortieth slot (40), and the forty-ninth slot (49) of the left-lobe winding form three U1 ends, which are respectively connected to the A1 phase of the first driver; the thirty-first slot (31), the fortieth slot (40), and the forty-ninth slot (49) of the left-lobe winding form three U1 ends. ) form three V1 terminals, which are respectively connected to the B1 phase of the first driver; the winding wires in the thirty-fourth slot (34), the forty-third slot (43), and the fifty-second slot (52) in the left-lobe winding form three W1 terminals, which are respectively connected to the C1 phase of the first driver; the thirty-third slot (33), the forty-second slot (42), the fifty-first slot (51) and the thirty-sixth slot (36), the forty-fifth slot (45), the fifty-fourth slot (54) and the thirtieth slot (30), the thirty-ninth slot (39), and the forty-eighth slot (48) in the left-lobe winding respectively form three U2 terminals, three V2 terminals, and three W2 terminals, which are connected together as the neutral point of the first winding; The winding wires in the first slot (1), the tenth slot (10), and the nineteenth slot (19) of the right lobe winding form three U1 terminals, which are respectively connected to the A2 phase of the second driver; the winding wires in the fourth slot (4), the thirteenth slot (13), and the twenty-second slot (22) of the right lobe winding form three V1 terminals, which are respectively connected to the B2 phase of the second driver; the winding wires in the seventh slot (7), the sixteenth slot (16), and the twenty-fifth slot (25) of the right lobe winding form three W1 terminals, which are respectively connected to the C2 phase of the second driver; the sixth slot (6), the fifteenth slot (15), the twenty-fourth slot (24), the ninth slot (9), the eighteenth slot (18), the twenty-seventh slot (27), and the third slot (3), the twelfth slot (12), and the twenty-first slot (21) of the right lobe winding respectively form three U2 terminals, three V2 terminals, and three W2 terminals, which are connected together as the neutral point of the second winding.

4. The permanent magnet synchronous motor with multiple drivers connected in parallel to drive windings according to claim 2 or 3, characterized in that: The winding wire is arranged in a double-layer stacked manner with fifty-four slots and twelve poles.

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