Stator sectional type linear motor circuit and linear motor

Abstract

The invention discloses a stator segmented linear motor circuit and a linear motor, and is applied to the technical field of motors. Wherein the input sides of the 2 * M segmented stator coils are provided with corresponding position sensing switches; and the input and the output of the segmented stator coils belonging to the same phase in the same group of stator windings are respectively connected with the voltage and the zero line of the corresponding phase in the M-phase converter, and when the rotor is coupled with the 2 * M segmented stator coils, the position induction switch corresponding to the coupling position is closed to form a winding loop, so that the M-phase converter supplies power to the winding loop. Therefore, according to the invention, sectional type long stator winding power supply is realized, and thrust fluctuation caused by power supply switching of the long stator linear motor is eliminated; the control of the long-stator linear motor is realized through a set of three-phase converter, and the system cost is saved; and the position sensing switches on the segmented stator coils and the linear motor are used as a whole, so that the universality of the stator segmented linear motor is enhanced.

Description

Technical Field

[0001] The present application relates to the technical field of motors, and particularly to a segmented stator linear motor circuit and a linear motor. Background Art

[0002] In modern industries, transportation, and other fields, long-stroke and high-power linear motors are increasingly widely used. Maglev linear motors, shipboard catapult motors, and elevator linear motors are typical representatives. When such motors operate, the coupling length between the mover and the stator inside and the number of pole pairs are the core factors affecting the motor performance. They interact with each other, jointly determine the power supply control mode of the stator, and play a decisive role in the magnitude of the thrust finally output by the motor.

[0003] To effectively reduce losses and improve efficiency, designing the stator side as a segmented structure has become an effective strategy. In this way, according to the actual working condition requirements, each segment can be flexibly spliced into a specific length to achieve customized adaptation, laying a foundation for the efficient operation of the motor in different scenarios. However, in applications, two or more converters need to be selected to supply power to the stator alternately according to different relationships between the lengths of the mover and the stator. The minimum number of converters is equal to the maximum number of stator segments coupled by the mover. When the mover poles are coupled with at most two stator segments simultaneously, at least two converters are required to supply power alternately to the system; when the coupling length of the mover poles is coupled with at most three stator segments, at least three converters are required to supply power alternately to the system, as Figure 1 shown, which brings relatively high costs; and it will cause an increase in magnetic leakage of the motor and a high reactive power, resulting in a deterioration of the comprehensive performance of the motor.

[0004] In view of the above technology, seeking a segmented stator linear motor circuit is an urgent problem for those skilled in the art. Summary of the Invention

[0005] The purpose of the present application is to provide a segmented stator linear motor circuit, including: an M-phase converter, a mover, K groups of stator windings, each group of stator windings corresponding to each phase in the M-phase converter, and each group of stator windings including 2*M segmented stator coils and 2*M position induction switches; both K and M are integers greater than 0;

[0006] Among them, position induction switches corresponding thereto are provided on the input sides of the 2*M segmented stator coils;

[0007] The inputs and outputs of the segmented stator coils belonging to the same phase in the same group of stator windings are respectively connected to the voltage and the neutral line of the corresponding phase in the M-phase converter. When the mover is coupled with the 2*M segmented stator coils, the position induction switches at the coupling positions are closed to form a winding loop, so that the M-phase converter supplies power to the winding loop.

[0008] Preferably, the inputs and outputs of the segmented stator coils belonging to the same phase in the same set of stator windings are respectively connected to the voltage and the neutral line of the corresponding phase in the M-phase converter, including:

[0009] Among them, the input ends of the odd-numbered segmented stator coils of the first M segmented stator coils in any set of stator windings are connected to the voltage of the corresponding phase in the M-phase converter;

[0010] The output ends of the odd-numbered segmented stator coils of the first M segmented stator coils in any set of stator windings are connected to the output ends of the odd-numbered segmented stator coils of the last M segmented stator coils;

[0011] The output ends of the odd-numbered segmented stator coils of the last M segmented stator coils in any set of stator windings are connected to the neutral line.

[0012] Preferably, the inputs and outputs of the segmented stator coils belonging to the same phase in the same set of stator windings are respectively connected to the voltage and the neutral line of the corresponding phase in the M-phase converter, and further include:

[0013] Among them, the input ends of the even-numbered segmented stator coils of the last M segmented stator coils in any set of stator windings are connected to the voltage of the corresponding phase in the M-phase converter;

[0014] The output ends of the even-numbered segmented stator coils of the last M segmented stator coils in any set of stator windings are connected to the output ends of the even-numbered segmented stator coils of the first M segmented stator coils;

[0015] The output ends of the even-numbered segmented stator coils of the first M segmented stator coils in any set of stator windings are connected to the neutral line.

[0016] Preferably, the inputs and outputs of the segmented stator coils belonging to the same phase in the same set of stator windings are respectively connected to the voltage and the neutral line of the corresponding phase in the M-phase converter, including:

[0017] Among them, the input ends of the segmented stator coils belonging to the same phase in any set of stator windings are connected together and commonly connected to the voltage of the corresponding phase in the M-phase converter;

[0018] The output ends of the segmented stator coils belonging to the same phase in any set of stator windings are connected together and commonly connected to the neutral line.

[0019] Preferably, the length of a pair of magnetic poles of the mover is the same as the length of a set of stator windings.

[0020] Preferably, the M-phase converter is a three-phase converter.

[0021] Preferably, the position sensing switch is a physical switch.

[0022] Preferably, the position sensing switch is a semiconductor switch.

[0023] Preferably, the position sensing switch is an inductive variable impedance switch.

[0024] On the other hand, the present application also provides a linear motor, including the above-mentioned stator segmented linear motor circuit.

[0025] It can be seen that the present application realizes the power supply for the segmented long stator winding, eliminates the thrust fluctuation caused by the power supply switching of the current long stator linear motor; and realizes the control of the long stator linear motor through a set of three-phase converters, reduces the system capacity requirement, and saves the system cost; as the mover moves, current is generated only on the segmented stator coils of equal length coupled with the mover, greatly improving the power factor of the long stator linear motor, and the position sensing switch on the segmented stator coils in the present application and the linear motor as a whole are no longer controlled by the system, enhancing the versatility of its stator segmented linear motor. Description of the Drawings

[0026] In order to more clearly illustrate the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0027] Figure 1 It is a segmented power supply structure diagram corresponding to the prior art;

[0028] Figure 2 It is a structure diagram of a stator segmented linear motor circuit provided by an embodiment of the present application;

[0029] Figure 3 It is a circuit diagram corresponding to the series connection provided by an embodiment of the present application;

[0030] Figure 4 It is a circuit diagram corresponding to the parallel connection provided by an embodiment of the present application. Detailed Embodiments

[0031] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some embodiments of the present application, rather than all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the protection scope of the present application.

[0032] The core of the present application is to provide a stator segmented linear motor circuit and a linear motor.

[0033] To enable those skilled in the art to better understand the solution of this application, the following further details this application in conjunction with the accompanying drawings and specific embodiments.

[0034] Figure 2 This is a circuit diagram of a segmented linear motor circuit provided for an embodiment of this application. Among them, Figure 2 M in it is 3, that is, the M-phase converter is a three-phase converter T (U, V, W); K is a multiple of 2; The first set of stator windings, that is, the first 2*M segmented stator coils are respectively A1, Z1, B1, X1, C1, Y1, and the corresponding position induction switches set on the input side of each current segmented stator coil are 1, 4, 5, 7, 10, 11; The second set of stator windings, that is, the second 2*M segmented stator coils are respectively: A2, Z2, B2, X2, C2, Y2, and the corresponding induction switches set on the input side of each current segmented stator coil are 13, 16, 17, 19, 22, 23; And Figure 2 The mover D in it (including a pair of magnetic poles, that is, including a pair of N poles and S poles), and the length of a pair of magnetic poles is connected to the length of a set of stator windings. When the segmented stator coils are divided according to the different phases they belong to, the U-phase stator windings at this time are A1, X1, A2, X2; The V-phase stator windings are Z1, C1, Z2, C2; The W-phase stator windings are B1, Y1, B2, Y2. Among them, Figure 2 2, 3, 6, 8, 9, 12, 14, 15, 18, 20, 21, 24 in it are all normally closed switches and are in a continuously conducting state.

[0035] In a specific embodiment, the operation of the linear motor requires coupling to be generated between the moving mover D and the segmented stator coils. In this application, when the mover D moves to the corresponding segmented stator coil for coupling, the position induction switch set on the input side inside the corresponding segmented stator coil closes. At this time, the input and output of the segmented stator coils belonging to the same phase in the same set of stator windings, the three-phase converter T and the neutral line form a U-phase winding circuit, a V-phase winding circuit and a W-phase winding circuit, and then the three-phase converter T supplies power to the U-phase winding circuit, the V-phase winding circuit and the W-phase winding circuit.

[0036] In this design, the segmented stator coils A1 and X1 form the first U-phase winding loop; the segmented stator coils X1 and A2 form the second U-phase winding loop; the segmented stator coils A2 and X2 form the third U-phase winding loop. The segmented stator coils Z1 and C1 form the first V-phase winding loop; the segmented stator coils C1 and Z2 form the second V-phase winding loop; the segmented stator coils Z2 and C2 form the third V-phase winding loop. The segmented stator coils B1 and Y1 form the first W-phase winding loop; the segmented stator coils Y1 and B2 form the second W-phase winding loop; the segmented stator coils B2 and Y2 form the third W-phase winding loop.

[0037] For example, when the mover D is currently at the first group of stator windings A1, Z1, B1, X1, C1, Y1, the position sensing switches 1, 4, 5, 7, 10, 11 are closed, and the position sensing switches 13, 16, 17, 19, 22, 23 are open. At this time, the loops in the stator segmented linear motor circuit include the first U-phase winding loop (A1 and X1), the first V-phase winding loop (Z1 and C1), and the first W-phase winding loop (B1 and Y1); when the mover D moves forward by one coil to the segmented stator coils Z1, B1, X1, C1, Y1, A2, the position sensing switches 4, 5, 7, 10, 11, 13 are closed, and the position sensing switches 1, 16, 17, 19, 22, 23 are open. At this time, the loops in the stator segmented linear motor circuit include the second U-phase winding loop (X1 and A2), the second V-phase winding loop (C1 and Z2), and the second W-phase winding loop (B1 and Y1); when the mover D moves forward further, and so on.

[0038] The working principle of the position sensing switch is as follows: The position sensing switch performs switch actions based on the information of the mover D sensed. When the effective length of the mover D covers the position sensing switch of the segmented stator coil, the sensing device of the corresponding position sensing switch will sense the mover D, and the corresponding position sensing switch conducts, and the impedance of the loop connected to this position sensing switch becomes smaller, and the current forms a path through the coil; when the effective length of the mover D does not cover the position sensing switch of the segmented stator coil, the sensing device of the corresponding position sensing switch does not sense the mover D, and the corresponding position sensing switch disconnects, and the impedance of the loop connected to this position sensing switch becomes larger, and the current no longer forms a path through the coil.

[0039] It should be noted that the position sensing switch can be a physical switch, a semiconductor switch, or an inductive variable impedance switch, and this application is not limited.

[0040] A kind of stator segmented linear motor circuit provided by this application includes: an M-phase converter, a mover, and K groups of stator windings. Each group of stator windings corresponds to each phase in the M-phase converter. Each group of stator windings includes 2*M segmented stator coils and 2*M position induction switches; both K and M are integers greater than 0. Among them, corresponding position induction switches are provided on the input sides of the 2*M segmented stator coils. The inputs and outputs of the segmented stator coils belonging to the same phase in the same group of stator windings are respectively connected to the voltage and the neutral line of the corresponding phase in the M-phase converter. When the mover is coupled with the 2*M segmented stator coils, the position induction switches at the coupled positions are closed to form a winding loop, so that the M-phase converter supplies power to the winding loop. Thus, it can be seen that this application realizes the power supply for the segmented long stator windings, eliminates the thrust fluctuation caused by the power supply switching of the current long stator linear motor, and realizes the control of the long stator linear motor through a set of three-phase converters, reduces the system capacity requirement, and saves the system cost. As the mover moves, current is only generated in the segmented stator coils of equal length that are coupled with the mover, greatly improving the power factor of the long stator linear motor. In addition, the position induction switches on the segmented stator coils in this application and the linear motor as a whole are no longer controlled by the system, enhancing the versatility of the stator segmented linear motor.

[0041] In a specific embodiment, the inputs and outputs of the segmented stator coils belonging to the same phase in the same group of stator windings are respectively connected to the voltage and the neutral line of the corresponding phase in the M-phase converter, which is specifically divided into two connection methods. The first is the series connection, and the second is the parallel connection.

[0042] For the first series connection: the input ends of the odd-numbered segmented stator coils of the first M segmented stator coils in any group of stator windings are connected to the voltage of the corresponding phase in the M-phase converter; the output ends of the odd-numbered segmented stator coils of the first M segmented stator coils in any group of stator windings are connected to the output ends of the odd-numbered segmented stator coils of the last M segmented stator coils; the output ends of the odd-numbered segmented stator coils of the last M segmented stator coils in any group of stator windings are connected to the neutral line; the input ends of the even-numbered segmented stator coils of the last M segmented stator coils in any group of stator windings are connected to the voltage of the corresponding phase in the M-phase converter; the output ends of the even-numbered segmented stator coils of the last M segmented stator coils in any group of stator windings are connected to the output ends of the even-numbered segmented stator coils of the first M segmented stator coils; the output ends of the even-numbered segmented stator coils of the first M segmented stator coils in any group of stator windings are connected to the neutral line.

[0043] For the second parallel connection: the input ends of the segmented stator coils belonging to the same phase in any group of stator windings are connected together and commonly connected to the voltage of the corresponding phase in the M-phase converter; the output ends of the segmented stator coils belonging to the same phase in any group of stator windings are connected together and commonly connected to the neutral line.

[0044] Figure 3 For the first series connection, Figure 4 For the second parallel connection, such as Figure 3 and 4 As shown, M is 3, that is, the M-phase converter is a three-phase converter T (U, V, W); K is a multiple of 2; the first set of stator windings, that is, the first 2*M segmented stator coils are A1, Z1, B1, X1, C1, Y1 respectively, and the corresponding position induction switches set on the input side of each current segmented stator coil are 1, 4, 5, 7, 10, 11; the second set of stator windings, that is, the second 2*M segmented stator coils are: A2, Z2, B2, X2, C2, Y2 respectively, and the corresponding induction switches set on the input side of each current segmented stator coil are 13, 16, 17, 19, 22, 23; and Figure 2 The length of the rotor D in including a pair of magnetic poles is connected to the length of a set of stator windings. Among them, Figure 3 and Figure 4 2, 3, 6, 8, 9, 12, 14, 15, 18, 20, 21, 24 in are all normally closed switches and are in a continuously conducting state. The segmented stator coils are divided according to the different phases they belong to. At this time, the U-phase stator winding is A1, X1, A2, X2; the V-phase stator winding is Z1, C1, Z2, C2; the W-phase stator winding is B1, Y1, B2, Y2. If further divided at this time, the first M segmented stator coils in the first set of stator windings are: A1, Z1, B1, among which the odd-numbered segmented stator coils are A1 and B1, and the even-numbered segmented stator coil is Z1; then the last M segmented stator coils in the first set of stator windings are: X1, C1, Y1, among which the odd-numbered segmented stator coils are X1 and Y1, and the even-numbered segmented stator coil is C1. The first M segmented stator coils in the second set of stator windings are: A2, Z2, B2, among which the odd-numbered segmented stator coils are A2 and B2, and the even-numbered segmented stator coil is Z2; then the last M segmented stator coils in the second set of stator windings are: X2, C2, Y2, among which the odd-numbered segmented stator coils are X2 and Y2, and the even-numbered segmented stator coil is C2.

[0045] Such as Figure 3As shown, the specific connection relationship of the series connection is as follows: For the U-phase stator winding: The input ends of the segmented stator coils A1 and A2 are connected together and are commonly connected to the U-phase voltage U in the three-phase converter T; the output ends of the segmented stator coils A1 and A2 are connected together and are commonly connected to the input ends of the segmented stator coils X1 and X2; the output ends of the segmented stator coils X1 and X2 are connected together and are commonly connected to the neutral line N. For the V-phase stator winding: The input ends of the segmented stator coils C1 and C2 are connected together and are commonly connected to the V-phase voltage V in the three-phase converter T; the output ends of the segmented stator coils C1 and C2 are connected together and are commonly connected to the inputs of the segmented stator coils Z1 and Z2; the output ends of the segmented stator coils Z1 and Z2 are connected together and are commonly connected to the neutral line N. For the W-phase stator winding: The input ends of the segmented stator coils B1 and B2 are connected together and are commonly connected to the W-phase voltage W in the three-phase converter Y; the output ends of the segmented stator coils B1 and B2 are connected together and are commonly connected to the input ends of the segmented stator coils Y1 and Y2; the output ends of the segmented stator coils Y1 and Y2 are connected together and are commonly connected to the neutral line N.

[0046] When the mover D is currently at the segmented stator coils A1, Z1, B1, X1, C1, Y1, the position sensing switches 1, 4, 5, 7, 10, 11 are closed, and the position sensing switches 13, 16, 17, 19, 22, 23 are opened. The three-phase converter T supplies power in series to the segmented stator coils A1, Z1, B1, X1, C1, Y1. At this time, the U-phase series circuit and its sequence are: A1 - X1; the V-phase series circuit and its sequence are: C1 - Z1; the W-phase series circuit and its sequence are: B1 - Y1. When the mover D moves forward by one coil to the segmented stator coils Z1, B1, X1, C1, Y1, A2, the position sensing switches 4, 5, 7, 10, 11, 13 are closed, and the position sensing switches 1, 16, 17, 19, 22, 23 are opened. The three-phase converter T supplies power in series to the segmented stator coils Z1, B1, X1, C1, Y1, A2. At this time, the U-phase series circuit and its sequence are: A2 - X1; the V-phase series circuit and its sequence are: C1 - Z1; the W-phase series circuit and its sequence are: B1 - Y1. When the mover D continues to move forward to the segmented stator coils B1, X1, C1, Y1, A2, Z2, the position sensing switches 5, 7, 10, 11, 13, 16 are closed, and the position sensing switches 1, 4, 17, 19, 22, 23 are opened. At this time, the U-phase series circuit and its sequence are: A2 - X1; the V-phase series circuit and its sequence are: C1 - Z2; the W-phase series circuit and its sequence are: B1 - Y1; If the mover D continues to move, the series circuit follows this pattern.

[0047] As Figure 4As shown in the figure, the specific connection relationship of the parallel connection is as follows: For the U-phase stator winding: The input ends of the segmented stator coils A1, X1, A2, and X2 are connected together and are commonly connected to the U-phase voltage U in the three-phase converter T; the output ends of the segmented stator coils A1, X1, A2, and X2 are connected together and are commonly connected to the neutral line N. For the V-phase stator winding: The input ends of the segmented stator coils Z1, C1, Z2, and C2 are connected together and are commonly connected to the V-phase voltage V in the three-phase converter T; the output ends of the segmented stator coils Z1, C1, Z2, and C2 are connected together and are commonly connected to the neutral line N. For the W-phase stator winding, the connection relationship is: The input ends of the segmented stator coils B1, Y1, B2, and Y2 are connected together and are commonly connected to the W-phase voltage W in the three-phase converter T; the output ends of the segmented stator coils B1, Y1, B2, and Y2 are connected together and are commonly connected to the neutral line N.

[0048] When the rotor D is currently at the segmented stator coils A1, Z1, B1, X1, C1, Y1, the position sensing switches 1, 4, 5, 7, 10, 11 are closed, and the position sensing switches 13, 16, 17, 19, 22, 23 are opened. The three-phase converter T supplies power in parallel to the segmented stator windings A1, Z1, B1, X1, C1, Y1. At this time, the U-phase parallel circuit and its sequence are: A1-X1; the V-phase parallel circuit and its sequence are: C1-Z1; the W-phase parallel circuit and its sequence are: B1-Y1. When the rotor D moves forward by one coil to the segmented stator coils Z1, B1, X1, C1, Y1, A2, the position sensing switches 4, 5, 7, 10, 11, 13 are closed, and the position sensing switches 1, 16, 17, 19, 22, 23 are opened. The three-phase converter T supplies power in parallel to the segmented stator coils Z1, B1, X1, C1, Y1, A2. At this time, the U-phase parallel circuit and its sequence are: A2-X1; the V-phase parallel circuit and its sequence are: C1-Z1; the W-phase parallel circuit and its sequence are: B1-Y1. When the rotor D continues to move forward to the segmented stator coils B1, X1, C1, Y1, A2, Z2, the position sensing switches 5, 7, 10, 11, 13, 16 are closed, and the position sensing switches 1, 4, 17, 19, 22, 23 are opened. At this time, the U-phase parallel circuit and its sequence are: A2-X1; the V-phase parallel circuit and its sequence are: C1-Z2; the W-phase parallel circuit and its sequence are: B1-Y1; if the rotor D continues to move, the parallel circuit follows the same pattern.

[0049] It should be noted that the embodiments provided in this application are only one implementable way, but not limited to only this implementable way, and can be set by users according to their needs.

[0050] The present application provides a specific connection method for series connection and parallel connection. In this method, it is possible to meet the control of a long stator linear motor through a set of three-phase converters, reduce the system capacity requirements, and save system costs.

[0051] Thus, it can be seen that the stator segmented linear motor circuit provided by the present application has the following advantages:

[0052] 1. The present application provides a wiring method for series connection and parallel connection corresponding to the stator segmented linear motor circuit, realizing the power supply for the segmented long stator winding and eliminating the thrust fluctuation caused by the power supply switching of the current long stator linear motor.

[0053] 2. The control of the long stator linear motor is realized through a set of three-phase converters, reducing the system capacity requirements and saving system costs.

[0054] 3. As the mover moves, current is generated only in the segmented stator windings of equal length coupled with the mover, greatly improving the power factor of the long stator linear motor.

[0055] 4. In the present application, the position induction switch on the segmented stator winding and the linear motor are regarded as a whole and are no longer controlled by the system, enhancing the versatility of the stator segmented linear motor.

[0056] On the other hand, the present application also provides a linear motor, including the above-mentioned stator segmented linear motor circuit, and having the same beneficial effects.

[0057] Since the embodiments corresponding to the linear motor are the same as those of the above-mentioned stator segmented linear motor circuit, the present application will not elaborate here.

[0058] The above has introduced in detail a stator segmented linear motor circuit and a linear motor provided by the present application. Each embodiment in the specification is described in a progressive manner. The key point of each embodiment is to illustrate the differences from other embodiments. The same or similar parts among the embodiments can be referred to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the description of the method part. It should be noted that for those of ordinary skill in the art in the technical field of the present application, without departing from the principle of the present application, several improvements and modifications can still be made to the present application, and these improvements and modifications also fall within the protection scope of the claims of the present application.

[0059] It should also be noted that in this specification, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising an..." does not exclude the presence of additional identical elements in the process, method, article or device comprising the said element.

Claims

1. A segmented linear motor circuit for a stator, characterized in that, Comprising: An M-phase current converter, a mover, K sets of stator windings, each set of the stator windings corresponding to each phase in the M-phase current converter, and each set of the stator windings including 2*M segmented stator coils and 2*M position sensing switches; both K and M are integers greater than 0; Wherein, corresponding position sensing switches are provided at the input sides of the 2*M segmented stator coils; The inputs and outputs of the segmented stator coils belonging to the same phase in the same set of the stator windings are respectively connected to the voltage and the neutral line of the corresponding phase in the M-phase current converter. When the mover is coupled with the 2*M segmented stator coils, the position sensing switches corresponding to the coupling positions are closed to form a winding loop, so that the M-phase current converter supplies power to the winding loop.

2. The stator segmented linear motor circuit according to claim 1, wherein The inputs and outputs of the segmented stator coils belonging to the same phase in the same set of the stator windings are respectively connected to the voltage and the neutral line of the corresponding phase in the M-phase current converter, Comprising: Wherein, the input ends of the odd-numbered segmented stator coils of the first M segmented stator coils in any set of the stator windings are connected to the voltage of the corresponding phase in the M-phase current converter; The output ends of the odd-numbered segmented stator coils of the first M segmented stator coils in any set of the stator windings are connected to the output ends of the odd-numbered segmented stator coils of the last M segmented stator coils; The output ends of the odd-numbered segmented stator coils of the last M segmented stator coils in any set of the stator windings are connected to the neutral line.

3. The stator segmented linear motor circuit according to claim 2, wherein The inputs and outputs of the segmented stator coils belonging to the same phase in the same set of the stator windings are respectively connected to the voltage and the neutral line of the corresponding phase in the M-phase current converter, and further Comprising: Wherein, the input ends of the even-numbered segmented stator coils of the last M segmented stator coils in any set of the stator windings are connected to the voltage of the corresponding phase in the M-phase current converter; The output ends of the even-numbered segmented stator coils of the last M segmented stator coils in any set of the stator windings are connected to the output ends of the even-numbered segmented stator coils of the first M segmented stator coils; The output ends of the even-numbered segmented stator coils of the first M segmented stator coils in any set of the stator windings are connected to the neutral line.

4. The stator segmented linear motor circuit according to claim 1, wherein, The inputs and outputs of the segmented stator coils belonging to the same phase in the same set of the stator windings are respectively connected to the voltage and the neutral line of the corresponding phase in the M-phase current converter, Comprising: Wherein, the input ends of the segmented stator coils belonging to the same phase in any set of the stator windings are connected together and commonly connected to the voltage of the corresponding phase in the M-phase current converter; The output ends of the segmented stator coils belonging to the same phase in any set of the stator windings are connected together and commonly connected to the neutral line.

5. The stator segmented linear motor circuit according to claim 1, wherein The length of a pair of magnetic poles of the mover is the same as the length of a set of the stator windings.

6. The segmented linear motor circuit of the stator according to claim 1, wherein The M-phase current converter is a three-phase current converter.

7. The stator segmented linear motor circuit according to claim 1, characterized in that, The position sensing switch is a physical switch.

8. The stator segmented linear motor circuit according to claim 1, wherein The position sensing switch is a semiconductor switch.

9. The stator segmented linear motor circuit according to any one of claims 1-6, characterized in that, The position sensing switch is an inductive variable impedance switch.

10. A linear motor, characterized in that, Including the stator segmented linear motor circuit according to any one of claims 1-9.

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