A method and system for determining the number of slots and slot type structure of a phase-converter stator

Abstract

The present invention relates to a method and system for determining the number of stator slots and slot type structure of a phase-variable phase transformer, and relates to the field of motor structure. The method comprises: determining the range of the number of stator slots of a three-phase winding and the range of the number of stator slots of a five-phase winding in a target phase-variable phase transformer stator structure; then providing three target arrangement schemes of stator slots in the stator structure of the target phase-variable phase transformer; determining the number of stator slots in the stator structure of the target phase-variable phase transformer according to the target arrangement schemes of the stator slots in the stator structure of the three-phase winding and the range of the number of stator slots of the five-phase winding; finally determining the slot type of the stator slots in the stator structure of the target phase-variable phase transformer according to the different number of stator slots. The present invention determines the number of slots and the slot type of the stator slots for placing the three-phase winding and the five-phase winding in the stator structure of the phase-variable phase transformer, thereby determining a five-phase power supply, realizing the conversion of the three-phase power supply of the phase-variable phase transformer into a five-phase power supply, and thus directly supplying power to the five-phase propulsion motor through the five-phase power supply.

Description

Technical Field

[0001] The present invention relates to the field of motor structures, and in particular to a method and system for determining the number of slots and the slot type structure of a phase-converter stator. Background Art

[0002] Multiphase motors have strong fault tolerance, and the capacity of modern ship integrated power systems is generally large, so their propulsion motors mostly use large-capacity multiphase motors. In the field of ships, five-phase motors are more often used for power supply.

[0003] However, the power supply of the prior art marine five-phase motor has long been supplied by a single-phase AC power supply or a three-phase AC power supply through a power conversion interface, and there is no corresponding five-phase power supply to directly supply the five-phase propulsion motor with electrical energy. Summary of the invention

[0004] The purpose of the present invention is to provide a method and system for determining the number of stator slots and slot type structure of a phase converter, which can transform the three-phase power supply of the phase converter into a five-phase power supply, thereby directly supplying power to the five-phase propulsion motor through the five-phase power supply.

[0005] To achieve the above object, the present invention provides the following solutions:

[0006] A method for determining the number of slots and the slot type structure of a phase-converter stator, comprising:

[0007] Determine the range of the number of stator slots of the three-phase winding and the range of the number of stator slots of the five-phase winding in the stator structure of the target inverter;

[0008] Determine a target arrangement scheme of stator slots in a target phase-shifting inverter stator structure; the target arrangement scheme includes a fully shared slot scheme, a partially shared slot scheme, and an unshared slot scheme; the fully shared slot scheme is that three-phase windings and five-phase windings are placed in all stator slots in the target phase-shifting inverter stator structure; the partially shared slot scheme is that three-phase windings and five-phase windings are placed in some stator slots in the target phase-shifting inverter stator structure, and only five-phase windings are placed in some stator slots; the unshared slot scheme is that three-phase windings or five-phase windings are placed in all stator slots in the target phase-shifting inverter stator structure;

[0009] Determining the number of stator slots in the stator structure of the target inverter according to the target arrangement scheme, the range of the number of stator slots of the three-phase winding and the range of the number of stator slots of the five-phase winding;

[0010] The slot type of the stator slots in the target phase-shifting phase-shifting phase-shifting phase-shifting stator structure is determined according to the number of the stator slots in the target phase-shifting ... stator structure; the slot type of the stator slots includes the size of the stator slots.

[0011] Optionally, determining the range of the number of stator slots of the three-phase winding and the range of the number of stator slots of the five-phase winding in the stator structure of the target phase-converter specifically includes:

[0012] The range of the number of stator slots of the three-phase winding is determined according to the formula Q1=6p1q1, where Q1 is the range of the number of stator slots of the three-phase winding, p1 is the number of pole pairs of the three-phase winding, and q1 is the range of the number of slots per pole per phase of the three-phase winding;

[0013] The range of the number of stator slots of the five-phase winding is determined according to the formula Q2=10p2q2, where Q2 is the range of the number of stator slots of the five-phase winding, p2 is the number of pole pairs of the five-phase winding, and q2 is the range of the number of slots per pole per phase of the five-phase winding.

[0014] Optionally, determining the number of stator slots in the target phase-converter stator structure according to the target arrangement scheme, the range of the number of stator slots of the three-phase winding, and the range of the number of stator slots of the five-phase winding specifically includes:

[0015] When the target arrangement scheme is a fully shared slot scheme, determine the slot number intersection range, and determine the slot number of the stator slots in the target phase-shift phase transformer stator structure according to the slot number intersection range; the slot number intersection range is the intersection range of the stator slot number range of the three-phase winding and the stator slot number range of the five-phase winding; the slot number of the stator slots in the target phase-shift phase transformer stator structure is 30 or a multiple of 30;

[0016] When the target arrangement scheme is a partial shared slot scheme, the number of stator slots in the target inverter stator structure is determined according to the range of the number of stator slots of the five-phase winding;

[0017] When the target arrangement scheme is a non-shared slot scheme, the number of stator slots of the three-phase winding is determined according to the range of the number of stator slots of the three-phase winding, the number of stator slots of the five-phase winding is determined according to the range of the number of stator slots of the five-phase winding, and the sum of the number of stator slots of the three-phase winding and the number of stator slots of the five-phase winding is determined as the number of stator slots in the stator structure of the target inverter.

[0018] Optionally, determining the slot type of the stator slots in the target phase-shifting phase-shifting phase-shifting stator structure according to the number of stator slots in the target phase-shifting phase-shifting phase-shifting stator structure specifically includes:

[0019] When the target arrangement scheme is a completely shared slot scheme, determining that the sizes of the stator slots in the target phase-shifting stator structure are all equal;

[0020] When the target arrangement scheme is a partial shared slot scheme, the shared slot is determined according to the number of stator slots, the number of three-phase windings and the number of five-phase windings in the stator structure of the target inverter, and the size of the shared slot is larger than the size of the stator slots other than the shared slot; the shared slot is a stator slot shared by the three-phase winding and the five-phase winding;

[0021] When the target arrangement scheme is a non-shared slot scheme, the three-phase winding stator slots and the five-phase winding stator slots are determined according to the number of stator slots in the target inverter stator structure, the number of three-phase windings and the number of five-phase windings, and the size of the three-phase winding stator slots is less than or equal to the size of the five-phase winding stator slots.

[0022] Optionally, when the target arrangement scheme is a non-shared slot scheme, the three-phase winding stator slots and the five-phase winding stator slots are arranged circumferentially and symmetrically.

[0023] Optionally, when the target arrangement scheme is a fully shared slot scheme, the five-phase winding is located at the bottom of each stator slot, and the three-phase winding is located at the top of each stator slot; when the target arrangement scheme is a partially shared slot scheme, the five-phase winding is located at the bottom of the shared slot, and the three-phase winding is located at the top of the shared slot.

[0024] Optionally, after determining the slot type of the stator slots in the target phase-variable phase-variable phase-variable phase-variable phase-stator structure according to the number of the stator slots in the target phase-variable phase-variable phase-variable phase-stator structure, the method further includes:

[0025] The shape of each stator slot in the stator structure of the target inverter is determined.

[0026] Optionally, determining the shape of each stator slot in the stator structure of the target phase converter specifically includes:

[0027] It is determined that the shapes of the stator slots in the stator structure of the target phase-shifting camera are all semi-closed pear-shaped.

[0028] A system for determining the number of slots and slot type structure of a phase-converter stator, comprising:

[0029] A slot number range determination module is used to determine the stator slot number range of the three-phase winding and the stator slot number range of the five-phase winding in the stator structure of the target phase-converter;

[0030] A target arrangement scheme determination module is used to determine a target arrangement scheme of stator slots in a target phase-variable phase transformer stator structure; the target arrangement scheme determination module includes a fully shared slot unit, a partially shared slot unit, and an unshared slot unit; the fully shared slot unit is used to place three-phase windings and five-phase windings in all stator slots in the target phase-variable phase transformer stator structure; the partially shared slot unit is used to place three-phase windings and five-phase windings in some stator slots in the target phase-variable phase transformer stator structure, and only place five-phase windings in some stator slots; the unshared slot unit is used to place three-phase windings or five-phase windings in all stator slots in the target phase-variable phase transformer stator structure;

[0031] A stator slot number determination module, used to determine the number of stator slots in the stator structure of the target inverter according to the target arrangement scheme determination module, the stator slot number range of the three-phase winding and the stator slot number range of the five-phase winding; the stator slot number determination module is connected to the slot number range determination module and the target arrangement scheme determination module respectively;

[0032] The slot type determination module of the stator slot is used to determine the slot type of the stator slot in the target phase-shifting stator structure according to the number of stator slots in the target phase-shifting stator structure; the slot type of the stator slot includes the size of the stator slot, and the slot type determination module of the stator slot is connected to the slot number determination module of the stator slot.

[0033] Optionally, the slot number range determination module includes:

[0034] A three-phase winding stator slot number range determination unit, used to determine the stator slot number range of the three-phase winding according to the formula Q1=6p1q1, wherein Q1 is the stator slot number range of the three-phase winding, p1 is the number of pole pairs of the three-phase winding, and q1 is the range of the number of slots per pole per phase of the three-phase winding; the three-phase winding stator slot number range determination unit is connected to the stator slot number determination module;

[0035] The stator slot number range determination unit of the five-phase winding is used to determine the stator slot number range of the five-phase winding according to the formula Q2=10p2q2, wherein Q2 is the stator slot number range of the five-phase winding, p2 is the number of pole pairs of the five-phase winding, and q2 is the range of the number of slots per pole and per phase of the five-phase winding; the stator slot number range determination unit of the five-phase winding is connected to the stator slot number determination module.

[0036] According to the specific embodiments provided by the present invention, the present invention discloses the following technical effects:

[0037] The method and system for determining the number of stator slots and the slot type structure of a phase transformer of the present invention include: determining the range of the number of stator slots of a three-phase winding and the range of the number of stator slots of a five-phase winding in a target phase transformer stator structure, then providing three target arrangement schemes of stator slots in the stator structures of the target phase transformer, determining the number of stator slots in the stator structure of the target phase transformer according to the target arrangement schemes of the stator slots in the stator structures of the three target phase transformers, the range of the number of stator slots of the three-phase winding and the range of the number of stator slots of the five-phase winding, and finally determining the slot type of the stator slots in the stator structure of the target phase transformer according to the different numbers of stator slots. The present invention determines the number and type of stator slots for placing three-phase windings and five-phase windings in the stator structure of the phase transformer, thereby determining a five-phase power supply. When three-phase power is passed through the three-phase windings in the stator structure of the phase transformer, the five-phase windings will generate an induced electromotive force, and the three-phase power supply of the phase transformer is converted into a five-phase power supply, so that the five-phase propulsion motor is directly powered by the five-phase power supply, thereby realizing the conversion of the three-phase power supply of the phase transformer into a five-phase power supply, and solving the defect of the prior art that the five-phase motor can only be powered by a single-phase AC power supply or a three-phase AC power supply through a power conversion interface. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0039] Figure 1 A schematic flow chart of a method for determining the number of stator slots and the slot type structure of a phase-converter provided in an embodiment of the present invention.

[0040] Figure 2 This is a schematic diagram of the stator slot number structure when two sets of windings provided in an embodiment of the present invention completely share slots, the number of phase poles of the inverter is 4, the number of slots per pole per phase of the three-phase winding is 5, and the number of slots per pole per phase of the five-phase winding is 3.

[0041] Figure 3 This is a schematic diagram of the stator slot number structure when two sets of windings partially share slots provided by an embodiment of the present invention, the number of phase poles of the inverter is 4, the number of slots per pole per phase of the three-phase winding is 4, and the number of slots per pole per phase of the five-phase winding is 3.

[0042] Figure 4 This is a schematic diagram of the stator slot number structure when two sets of windings partially share slots provided by an embodiment of the present invention, the number of phase poles of the inverter is 4, the number of slots per pole per phase of the three-phase winding is 3, and the number of slots per pole per phase of the five-phase winding is 3.

[0043] Figure 5This is a schematic diagram of the structure of the number of stator slots when two sets of windings provided in an embodiment of the present invention do not share slots, the number of phase poles of the inverter is 2, the number of slots per pole per phase of the three-phase winding is 5, the number of slots per pole per phase of the five-phase winding is 3, and both sets of windings use symmetrical windings.

[0044] Figure 6 It is a schematic diagram of the stator slot structure when two sets of windings provided in an embodiment of the present invention completely share slots, the number of phase poles of the inverter is 4, the number of slots per pole per phase of the three-phase winding is 5, and the number of slots per pole per phase of the five-phase winding is 3.

[0045] Figure 7 This is a schematic diagram of the stator slot structure when two sets of windings provided in an embodiment of the present invention partially share slots, the number of phase poles of the inverter is 4, the number of slots per pole per phase of the three-phase winding is 4, and the number of slots per pole per phase of the five-phase winding is 3.

[0046] Figure 8 This is a schematic diagram of the stator slot structure when two sets of windings partially share slots provided by an embodiment of the present invention, the number of phase poles of the inverter is 4, the number of slots per pole per phase of the three-phase winding is 3, and the number of slots per pole per phase of the five-phase winding is 3.

[0047] Fig. 9 This is a schematic diagram of the stator slot structure when the two sets of windings provided in an embodiment of the present invention do not share slots, the number of phase poles of the inverter is 2, the number of slots per pole per phase of the three-phase winding is 5, the number of slots per pole per phase of the five-phase winding is 3, and both sets of windings use symmetrical windings.

[0048] Fig.10 This is a system structure diagram of a system for determining the number of stator slots and slot type structure of a phase-converter provided in an embodiment of the present invention.

[0049] Explanation of symbols: five-phase winding-1; three-phase winding-2; common slot-3; stator slot other than the common slot-4; five-phase winding stator slot-5; three-phase winding stator slot-6. DETAILED DESCRIPTION

[0050] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0051] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0052] See also Figure 1 The present invention provides a method for determining the number of slots and slot type structure of a phase-converter stator, comprising:

[0053] Step 101: Determine a range of the number of stator slots of a three-phase winding and a range of the number of stator slots of a five-phase winding in a stator structure of a target inverter.

[0054] Step 102: Determine a target arrangement scheme of stator slots in the target phase-shifting transformer stator structure. The target arrangement schemes include a fully shared slot scheme, a partially shared slot scheme, and a non-shared slot scheme; the fully shared slot scheme is that three-phase windings and five-phase windings are placed in all stator slots in the target phase-shifting transformer stator structure; the partially shared slot scheme is that three-phase windings and five-phase windings are placed in some stator slots in the target phase-shifting transformer stator structure, and only five-phase windings are placed in some stator slots; the non-shared slot scheme is that three-phase windings or five-phase windings are placed in all stator slots in the target phase-shifting transformer stator structure.

[0055] Step 103: Determine the number of stator slots in the stator structure of the target inverter according to the target arrangement scheme, the range of the number of stator slots of the three-phase winding and the range of the number of stator slots of the five-phase winding.

[0056] Step 104: Determine the slot type of the stator slots in the target phase-shifting ...

[0057] The method for determining the number of slots and slot type structure of the phase-converter stator in this embodiment can transform the three-phase power supply of the phase-converter into a five-phase power supply, and generate an induced electromotive force in the five-phase winding by passing three-phase power through the three-phase winding. Then, the five-phase propulsion motor is directly powered by the five-phase power supply.

[0058] More specifically, step 101 specifically includes:

[0059] The range of the number of stator slots of the three-phase winding is determined according to the formula Q1=6p1q1, where Q1 is the range of the number of stator slots of the three-phase winding, p1 is the number of pole pairs of the three-phase winding, and q1 is the range of the number of slots per pole per phase of the three-phase winding.

[0060] The range of the number of stator slots of the five-phase winding is determined according to the formula Q2=10p2q2, where Q2 is the range of the number of stator slots of the five-phase winding, p2 is the number of pole pairs of the five-phase winding, and q2 is the range of the number of slots per pole per phase of the five-phase winding.

[0061] In one example, see Figures 2 to 5 , according to the target arrangement scheme, the range of the number of stator slots of the three-phase winding 2 and the range of the number of stator slots of the five-phase winding 1, the number of stator slots in the stator structure of the target inverter is determined, specifically including:

[0062] See also Figure 2 An embodiment of Figure 2It is the stator slot number structure when the number of phase transformer poles is 4, the number of slots per pole per phase of the three-phase winding is 5, and the number of slots per pole per phase of the five-phase winding is 3. At this time, the two sets of windings share slot 3. When the target arrangement scheme is a completely shared slot scheme, the slot number intersection range is determined, and the number of stator slots in the target phase transformer stator structure is determined according to the slot number intersection range; the slot number intersection range is the intersection range of the stator slot number range of the three-phase winding 2 and the stator slot number range of the five-phase winding 1; when the target arrangement scheme is a completely shared slot scheme, the least common multiple of the stator slot number of the three-phase winding 2 and the stator slot number of the five-phase winding 1 is obtained according to the stator slot number formula as the number of stator slots in the stator structure of the target phase transformer, and the stator slot number should be at least the least common multiple of 6 and 10, that is, the stator slot number should be at least 30 or a multiple of 30.

[0063] See also Figure 3 and Figure 4 An embodiment of Figure 3 to Figure 4 When two sets of windings partially share slots, the number of phase poles of the transformer is 4, the number of slots per pole and phase of the five-phase winding is 3, and the number of slots per pole and phase of the three-phase winding is 4 and 3 respectively. When the target arrangement scheme is a partial shared slot scheme, because the three-phase winding 2 only occupies a part of the stator slots in the target transformer stator structure, that is, the range of the number of stator slots of the five-phase winding 1 is larger than that of the three-phase winding 2, the number of stator slots in the target transformer stator structure is determined according to the range of the number of stator slots of the five-phase winding 1.

[0064] See also Figure 5 An embodiment of Figure 5 When the two sets of windings do not share slots, the number of phase poles of the transformer is 2, the number of slots per pole per phase of the three-phase winding is 5, and the number of slots per pole per phase of the five-phase winding is 3. When the target arrangement scheme is a non-shared slot scheme, the three-phase winding 2 and the five-phase winding 1 are independent of each other, and the two sets of windings do not have any shared slots 3. Therefore, the stator slots of the two sets of windings can be designed separately, and the stator slots of the two sets of windings can be merged together. At this time, the number of stator slots of the three-phase winding 2 is determined according to the range of the number of stator slots of the three-phase winding 2, and the number of stator slots of the five-phase winding 1 is determined according to the range of the number of stator slots of the five-phase winding 1, and the sum of the number of stator slots of the three-phase winding 2 and the number of stator slots of the five-phase winding 1 is determined as the number of stator slots in the stator structure of the target transformer.

[0065] In one example, see Figures 6 to 9 , step 104, specifically includes:

[0066] See also Figure 6 An embodiment of Figure 6 When two sets of windings completely share slots, the stator slot structure is when the number of phase poles of the transformer is 4, the number of slots per pole per phase of the three-phase winding is 5, and the number of slots per pole per phase of the five-phase winding is 3. When the target arrangement scheme is a completely shared slot scheme, it is determined that the sizes of the stator slots in the target transformer stator structure are all equal.

[0067] See also Figure 7 and Figure 8 An embodiment of Figure 7 and Figure 8 When two sets of windings partially share slots, the number of phase transformer poles is 4, the number of slots per pole and phase of the five-phase winding is 3, and the number of slots per pole and phase of the three-phase winding is 4 and 3 respectively. When the target arrangement scheme is a partial shared slot scheme, the number of shared slots 3 is determined according to the number of stator slots in the target phase transformer stator structure, the number of three-phase windings 2 and the number of five-phase windings 1. According to the winding carrying capacity, the size of shared slots 3 is larger than the size of stator slots 4 other than shared slots; the number of shared slots is the number of stator slots shared by three-phase windings 2 and five-phase windings 1; the size of shared slots 3 and the size of stator slots 4 other than shared slots are not limited here, and the appropriate size can be selected according to actual needs.

[0068] See also Fig. 9 An embodiment of Fig. 9 When the two sets of windings do not share slots, the number of phase transformer poles is 2, the number of slots per pole per phase of the three-phase winding is 5, and the number of slots per pole per phase of the five-phase winding is 3. When the target arrangement scheme is a non-shared slot scheme, the three-phase winding stator slot 6 and the five-phase winding stator slot 5 are determined according to the number of stator slots in the target phase transformer stator structure, the number of three-phase windings 2, and the number of five-phase windings 1, and the size of the three-phase winding stator slot 6 is less than or equal to the size of the five-phase winding stator slot 5. The size of the three-phase winding stator slot 6 and the size of the five-phase winding stator slot 5 are not limited here, and the appropriate size can be selected according to actual needs.

[0069] For more details, see Figure 5 When the target arrangement scheme is a non-shared slot scheme, the three-phase winding stator slots 6 and the five-phase winding stator slots 5 are arranged symmetrically along the circumference. The arrangement method of the three-phase winding stator slots 6 and the five-phase winding stator slots 5 is not limited here, and a suitable arrangement method can be selected according to actual needs.

[0070] For more details, see Figures 2 to 4 When the target arrangement scheme is a fully shared slot scheme, the five-phase winding 1 is located at the bottom of each stator slot, and the three-phase winding 2 is located at the top of each stator slot; when the target arrangement scheme is a partially shared slot scheme, the five-phase winding 1 is located at the bottom of the shared slot 3, and the three-phase winding 2 is located at the top of the shared slot 3. The positions of the five-phase winding 1 and the three-phase winding 2 in the stator slot arrangement are not limited here, and a suitable arrangement method can be selected according to actual needs.

[0071] In one example, after step 104, the method further includes: determining the shape of each stator slot in the stator structure of the target inverter. Figures 2 to 9, it can be determined that the shapes of the stator slots in the target phase-shifting phase stator structure are all semi-closed pear-shaped. The shapes of the stator slots in the target phase-shifting phase stator structure are not limited here, and the shape of the stator slots can be selected according to actual needs.

[0072] like Fig.10 As shown, the system for determining the number of slots and slot type structure of a phase-converter stator provided by the present invention comprises:

[0073] The slot number range determination module 201 determines the stator slot number range of the three-phase winding 2 and the stator slot number range of the five-phase winding 1 in the stator structure of the target inverter.

[0074] The target arrangement scheme determination module 202 determines the target arrangement scheme of the stator slots in the target phase transformer stator structure; the target arrangement scheme determination module includes fully shared slot units, partially shared slot units and unshared slot units; the fully shared slot units are for placing three-phase winding 2 and five-phase winding 1 in all stator slots in the target phase transformer stator structure; the partially shared slot units are for placing three-phase winding 2 and five-phase winding 1 in some stator slots in the target phase transformer stator structure; the unshared slot units are for placing three-phase winding 2 or five-phase winding 1 in all stator slots in the target phase transformer stator structure.

[0075] The stator slot number determination module 203 determines the number of stator slots in the target phase-shifting phase stator structure according to the target arrangement scheme determination module, the stator slot number range of the three-phase winding 2 and the stator slot number range of the five-phase winding 1; the stator slot number determination module is respectively connected to the slot number range determination module and the target arrangement scheme determination module.

[0076] The stator slot type determination module 204 determines the slot type of the stator slot in the target phase transformer stator structure according to the number of stator slots in the target phase transformer stator structure; the stator slot type is the size of the stator slot; the stator slot type determination module is connected to the stator slot number determination module.

[0077] In one example, the slot number range determination module 201 includes:

[0078] The stator slot number range determination unit of the three-phase winding determines the stator slot number range of the three-phase winding 2 according to the formula Q1=6p1q1, wherein Q1 is the stator slot number range of the three-phase winding 2, p1 is the pole pair number of the three-phase winding 2, and q1 is the slot number range per pole per phase of the three-phase winding 2; the stator slot number range determination unit of the three-phase winding 2 is connected to the stator slot number determination module.

[0079] The stator slot number range determination unit of the five-phase winding determines the stator slot number range of the five-phase winding 1 according to the formula Q2=10p2q2, wherein Q2 is the stator slot number range of the five-phase winding 1, p2 is the pole pair number of the five-phase winding 1, and q2 is the slot number range per pole per phase of the five-phase winding 1; the stator slot number range determination unit of the five-phase winding 1 is connected to the stator slot number determination module.

[0080] The present invention provides a method for determining the number of stator slots and slot type structure of a phase transformer, and the specific process is: determining the range of the number of stator slots of the three-phase winding 2 and the range of the number of stator slots of the five-phase winding 1 in the stator structure of the target phase transformer. In order to obtain different motor performances, the number of stator slots in the stator structure of the target phase transformer may not be completely the same, so three target arrangement schemes of the stator slots in the stator structure of the target phase transformer are given. The target arrangement schemes of the stator slots in the stator structure of the target phase transformer include a completely shared slot scheme, a partially shared slot scheme and a non-shared slot scheme; the completely shared slot scheme is that the three-phase winding 2 and the five-phase winding 1 are placed in all stator slots in the stator structure of the target phase transformer. Winding 1; the partially shared slot scheme is to place three-phase winding 2 and five-phase winding 1 in some stator slots in the stator structure of the target phase transformer; the non-shared slot scheme is to place three-phase winding 2 or five-phase winding 1 in all stator slots in the stator structure of the target phase transformer; the number of stator slots in the stator structure of the target phase transformer is determined according to the target arrangement schemes of the stator slots in the stator structure of the three target phase transformers, the range of the number of stator slots of the three-phase winding 2 and the range of the number of stator slots of the five-phase winding 1, and finally, according to the different numbers of stator slots, the number of conductors per slot will be different, and stator slots of different sizes are designed, and finally the slot type of the stator slots in the stator structure of the target phase transformer is determined.

[0081] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0082] The principles and implementation methods of the present invention are described in this article using specific examples. The description of the above embodiments is only used to help understand the method and core idea of ​​the present invention. At the same time, for those skilled in the art, according to the idea of ​​the present invention, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. A method for determining the number of slots and slot type structure of a phase-converter stator, characterized in that: include: Determine the range of the number of stator slots for the three-phase winding and the range of the number of stator slots for the five-phase winding in the stator structure of the target inverter, including: Determine the range of the number of stator slots of the three-phase winding according to the formula Q1=6p1q1, where Q1 is the range of the number of stator slots of the three-phase winding, p1 is the number of pole pairs of the three-phase winding, and q1 is the range of the number of slots per pole per phase of the three-phase winding; Determine the range of the number of stator slots of the five-phase winding according to the formula Q2=10p2q2, where Q2 is the range of the number of stator slots of the five-phase winding, p2 is the number of pole pairs of the five-phase winding, and q2 is the range of the number of slots per pole per phase of the five-phase winding; Determine a target arrangement scheme of stator slots in a target phase-shifting inverter stator structure; the target arrangement scheme includes a fully shared slot scheme, a partially shared slot scheme, and an unshared slot scheme; the fully shared slot scheme is that three-phase windings and five-phase windings are placed in all stator slots in the target phase-shifting inverter stator structure; the partially shared slot scheme is that three-phase windings and five-phase windings are placed in some stator slots in the target phase-shifting inverter stator structure, and only five-phase windings are placed in some stator slots; the unshared slot scheme is that three-phase windings or five-phase windings are placed in all stator slots in the target phase-shifting inverter stator structure; Determining the number of stator slots in the stator structure of the target inverter according to the target arrangement scheme, the range of the number of stator slots of the three-phase winding and the range of the number of stator slots of the five-phase winding; Determining the slot type of the stator slots in the target phase-shifting phase-shifting phase-shifting phase-shifting stator structure according to the number of stator slots in the target phase-shifting ... stator structure specifically includes: When the target arrangement scheme is a completely shared slot scheme, determining that the sizes of the stator slots in the target phase-shifting stator structure are all equal; When the target arrangement scheme is a partial shared slot scheme, the shared slot is determined according to the number of stator slots, the number of three-phase windings and the number of five-phase windings in the stator structure of the target inverter, and the size of the shared slot is larger than the size of the stator slots other than the shared slot; the shared slot is a stator slot shared by the three-phase winding and the five-phase winding; When the target arrangement scheme is a non-shared slot scheme, the three-phase winding stator slots and the five-phase winding stator slots are determined according to the number of stator slots in the target inverter stator structure, the number of three-phase windings and the number of five-phase windings, and the size of the three-phase winding stator slots is less than or equal to the size of the five-phase winding stator slots; the slot type of the stator slot includes the size of the stator slot.

2. A method for determining the number of slots and slot type structure of a phase-converter stator according to claim 1, characterized in that: Determining the number of stator slots in the target phase-converter stator structure according to the target arrangement scheme, the range of the number of stator slots of the three-phase winding, and the range of the number of stator slots of the five-phase winding specifically includes: When the target arrangement scheme is a fully shared slot scheme, determine the slot number intersection range, and determine the slot number of the stator slots in the target phase-shift phase transformer stator structure according to the slot number intersection range; the slot number intersection range is the intersection range of the stator slot number range of the three-phase winding and the stator slot number range of the five-phase winding; the slot number of the stator slots in the target phase-shift phase transformer stator structure is 30 or a multiple of 30; When the target arrangement scheme is a partial shared slot scheme, the number of stator slots in the target inverter stator structure is determined according to the range of the number of stator slots of the five-phase winding; When the target arrangement scheme is a non-shared slot scheme, the number of stator slots of the three-phase winding is determined according to the range of the number of stator slots of the three-phase winding, the number of stator slots of the five-phase winding is determined according to the range of the number of stator slots of the five-phase winding, and the sum of the number of stator slots of the three-phase winding and the number of stator slots of the five-phase winding is determined as the number of stator slots in the stator structure of the target inverter.

3. The method for determining the number of slots and slot type structure of a phase-converter stator according to claim 1, characterized in that: When the target arrangement scheme is a non-shared slot scheme, the three-phase winding stator slots and the five-phase winding stator slots are arranged circumferentially and symmetrically.

4. The method for determining the number of slots and slot type structure of a phase-converter stator according to claim 1, characterized in that: When the target arrangement scheme is a fully shared slot scheme, the five-phase winding is located at the bottom of each stator slot, and the three-phase winding is located at the top of each stator slot; when the target arrangement scheme is a partially shared slot scheme, the five-phase winding is located at the bottom of the shared slot, and the three-phase winding is located at the top of the shared slot.

5. The method for determining the number of slots and slot type structure of a phase-converter stator according to claim 1, characterized in that: After determining the slot type of the stator slots in the target phase-variable ... The shape of each stator slot in the stator structure of the target inverter is determined.

6. A method for determining the number of slots and slot type structure of a phase-converter stator according to claim 5, characterized in that: Determining the shape of each stator slot in the stator structure of the target inverter specifically includes: It is determined that the shapes of the stator slots in the stator structure of the target phase-shifting camera are all semi-closed pear-shaped.

7. A system for determining the number of slots and slot type structure of a phase-converter stator, characterized in that: include: A slot number range determination module is used to determine the stator slot number range of the three-phase winding and the stator slot number range of the five-phase winding in the stator structure of the target phase-converter; the slot number range determination module includes: A three-phase winding stator slot number range determination unit, used to determine the stator slot number range of the three-phase winding according to the formula Q1=6p1q1, wherein Q1 is the stator slot number range of the three-phase winding, p1 is the number of pole pairs of the three-phase winding, and q1 is the range of the number of slots per pole per phase of the three-phase winding; the three-phase winding stator slot number range determination unit is connected to the stator slot number determination module; A stator slot number range determination unit for a five-phase winding, used to determine the stator slot number range of the five-phase winding according to the formula Q2=10p2q2, wherein Q2 is the stator slot number range of the five-phase winding, p2 is the number of pole pairs of the five-phase winding, and q2 is the slot number range per pole per phase of the five-phase winding; the stator slot number range determination unit for the five-phase winding is connected to the stator slot number determination module; A target arrangement scheme determination module is used to determine a target arrangement scheme of stator slots in a target phase-variable phase transformer stator structure; the target arrangement scheme determination module includes a fully shared slot unit, a partially shared slot unit, and an unshared slot unit; the fully shared slot unit is used to place three-phase windings and five-phase windings in all stator slots in the target phase-variable phase transformer stator structure; the partially shared slot unit is used to place three-phase windings and five-phase windings in some stator slots in the target phase-variable phase transformer stator structure, and only place five-phase windings in some stator slots; the unshared slot unit is used to place three-phase windings or five-phase windings in all stator slots in the target phase-variable phase transformer stator structure; A stator slot number determination module, used to determine the number of stator slots in the target inverter stator structure according to the target arrangement scheme determination module, the range of the number of stator slots of the three-phase winding and the range of the number of stator slots of the five-phase winding; The stator slot number determination module is connected to the slot number range determination module and the target arrangement scheme determination module respectively; The stator slot type determination module is used to determine the slot type of the stator slot in the target phase-shifting stator structure according to the number of stator slots in the target phase-shifting stator structure, and specifically includes: When the target arrangement scheme is a completely shared slot scheme, determining that the sizes of the stator slots in the target phase-shifting stator structure are all equal; When the target arrangement scheme is a partial shared slot scheme, the shared slot is determined according to the number of stator slots, the number of three-phase windings and the number of five-phase windings in the stator structure of the target inverter, and the size of the shared slot is larger than the size of the stator slots other than the shared slot; the shared slot is a stator slot shared by the three-phase winding and the five-phase winding; When the target arrangement scheme is a non-shared slot scheme, the three-phase winding stator slots and the five-phase winding stator slots are determined according to the number of stator slots in the target inverter stator structure, the number of three-phase windings and the number of five-phase windings, and the size of the three-phase winding stator slots is less than or equal to the size of the five-phase winding stator slots; the slot type of the stator slot includes the size of the stator slot, and the stator slot type determination module is connected to the stator slot number determination module.

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