Parallel module driver
By designing the inverter module in the parallel module driver, including multiple sets of power switching circuits and a modular backplane structure, the problem of insufficient output power of traditional drivers is solved, and a higher output power axis number and product versatility is achieved.
Patent Information
- Application Number
- CN202421300694.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-07
- Publication Date
- 2025-04-15
- Estimated Expiration
- 2034-06-07
AI Technical Summary
Due to the limitations of the package size and quantity of IGBT components, the inverter module can only provide single-port or up to dual-port AC output power, which cannot meet the larger power requirements, limiting the general availability of the product.
A parallel module driver is designed, wherein the inverter module includes at least three sets of power switching circuits, which are arranged on the circuit board in dislocation. Each inverter module can provide at least three AC output power, and expand it through a modular backplane structure and rectifier module to achieve a higher output power axis.
It realizes that more AC output power is provided under the same number of modules, thereby improving the versatility of the product and able to cope with larger power requirements.
Smart Images
Figure CN222763772U_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to a parallel module driver, and more particularly to a parallel module driver capable of providing at least three AC output electrical energies. Background Art
[0002] In a conventional parallel module driver, an inverter module and a rectifier module are arranged side by side in a single direction, that is, they are installed on a base in a horizontal plug-in manner and are electrically connected through a connector between the bases.
[0003] In the cabinet of equipment manufacturers, space utilization is one of the indicators of product competitiveness and the key to cost. The core component IGBT used in traditional inverter modules is a plug-in discrete device. Due to the limitation of package size and quantity of IGBT and the structure of traditional inverter modules, the layout space available in traditional inverter modules is limited, so that traditional inverter modules can only provide single-port AC output power or at most dual-port AC output power. As a result, when one rectifier module is used to expand four inverter modules, the traditional parallel module driver can only provide eight AC output powers at most, which is not enough to meet the power demand that may be faced in the future, resulting in the inability to improve the versatility of traditional inverter modules and traditional parallel module drivers. Utility Model Content
[0004] The present invention is a parallel module driver, wherein the inverter module of the parallel module driver can provide at least three AC output powers, corresponding to the parallel module driver can provide twelve AC output powers when one rectifier module is used to expand four inverter modules, so that the inverter module and its parallel module driver can cope with larger power requirements, thereby improving the versatility of the product.
[0005] To achieve the aforementioned purpose, a preferred embodiment of the present invention provides a parallel module driver, comprising: a rectifier module, which converts AC input power into DC bus power and outputs it, and comprises a rectifier first side and a rectifier second side arranged opposite to each other in a first direction; and at least one inverter module, each inverter module comprises an inverter first side and an inverter second side arranged opposite to each other in the first direction, and each inverter module comprises: a circuit board; and at least three groups of power switch circuits, which are staggeredly arranged on the circuit board, each power switch circuit receives DC bus power and converts it into an AC output power; at least one The inverter module and at least one rectifier module are assembled with the modular backplane structure along a second direction, and the second direction is perpendicular to the first direction; wherein one of the at least one inverter module is arranged adjacent to the rectifier module, and the first rectifier side and the second inverter side are in contact with each other or the second rectifier side and the first inverter side are in contact with each other; wherein the number of axes of the parallel module driver outputting AC output power can reach M*(N-1)*K, wherein M is the number of output ports of a single inverter module, N is the number of modular backplane structures connected to the rectifier module and the inverter module, and K is the number of rectifier modules, wherein M≥2, N≥2, and K≥1.
[0006] In an embodiment of the present invention, the AC output power provided by each of the power switch circuits is three-phase AC output power and includes at least six switch elements to form a three-arm bridge structure.
[0007] In an embodiment of the present invention, the power switch circuit has a plurality of switch elements, and the plurality of switch elements are packaged using EASY 1B.
[0008] In one embodiment of the present invention, the power switch circuit has a plurality of switch elements, and the plurality of switch elements are packaged using EASY 750.
[0009] In one embodiment of the present invention, each of the power switching circuits is composed of a plurality of discrete switching elements, and the plurality of switching elements are respectively composed of a plurality of single insulated gate bipolar transistors, a plurality of integrated surface mount insulated gate bipolar transistors, or a plurality of integrated plug-in insulated gate bipolar transistors.
[0010] In one embodiment of the present invention, the modular backplane structure includes a plurality of connectors, and the at least one rectifier module and the at least one inverter module are respectively connected to at least one of the plurality of connectors of the modular backplane structure along the second direction.
[0011] In one embodiment of the present invention, one rectifier module, four inverter modules, and one modular backplane structure are included, and twelve AC output electric energies are provided by the four inverter modules.
[0012] In an embodiment of the present invention, the power switch circuit has a plurality of switch elements, and the plurality of switch elements are packaged in a modular manner.
[0013] In one embodiment of the present invention, the power switching circuit is composed of a plurality of discrete switching elements, wherein the plurality of switching elements can be respectively composed of a single insulated gate bipolar transistor, a plurality of integrated surface mount insulated gate bipolar transistors, or a plurality of integrated plug-in insulated gate bipolar transistors.
[0014] In an embodiment of the present invention, the power switch circuit has a plurality of switch elements, and the plurality of switch elements include insulated gate bipolar transistors or metal oxide semiconductor field effect transistors. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 This is a schematic diagram of the structure of a parallel module driver of a preferred embodiment of the present invention;
[0016] Figure 2 for Figure 1 The inverter module shown is a schematic structural diagram of the first embodiment;
[0017] Figure 3 for Figure 1 The inverter module shown is a schematic structural diagram of the second embodiment;
[0018] Figure 4 for Figure 1 The shown diagram is a structural diagram of an inverter module in a third embodiment.
[0019]
Explanation of symbols
[0020] 1: Parallel module driver
[0021] 2: Rectifier module
[0022] 20: Rectification first side
[0023] 21: Rectification second side
[0024] 22: Front of rectifier module
[0025] 3, 3a, 3b: Inverter module
[0026] 30: Inverter first side
[0027] 31: Inverter second side
[0028] 32: Front of inverter module
[0029] 33: Circuit Board
[0030] 34: Power switch circuit
[0031] 34a: Switching element DETAILED DESCRIPTION
[0032] Some typical embodiments that embody the features and advantages of the present invention will be described in detail in the following description. It should be understood that the present invention can have various variations in different aspects without departing from the scope of the present invention, and the description and drawings are essentially for illustrative purposes, rather than for limiting the present invention.
[0033] See also Figure 1 and Figure 2 ,in Figure 1 This is a schematic diagram of the structure of the parallel module driver of the preferred embodiment of this case. Figure 2 for Figure 1 The inverter module shown is a schematic diagram of the structure of the first embodiment. The parallel module driver 1 of this embodiment includes at least one rectifier module 2, at least one inverter module 3 and at least one modular backplane structure (not shown in the figure). The modular backplane structure includes multiple connectors (not shown in the figure), and the rectifier module 2 and the inverter module 3 can be respectively connected to at least one of the multiple connectors of the modular backplane structure, so that the parallel module driver uses the modular backplane structure to expand the number of rectifier modules and the number of inverter modules. Since the structural features of the modular backplane structure are not the focus of this case, and technicians in this field can understand the purpose of setting the modular backplane structure, they will not be repeated here.
[0034] The rectifier module 2 is used to convert input power into DC bus power and includes a first rectifier side 20 and a second rectifier side 21. The first rectifier side 20 and the second rectifier side 21 are arranged opposite to each other in a first direction (i.e., the X-axis direction). The input power is, for example, alternating current. In some embodiments, the front side 22 of the rectifier module 2 has accessories such as an input port and a control panel for user operation.
[0035] Each inverter module 3 includes an inverter first side 30 and an inverter second side 31. The inverter first side 30 and the inverter second side 31 are arranged opposite to each other in a first direction (i.e., the X-axis direction). In some embodiments, the front side 32 of the inverter module 3 has a plurality of output ports and other accessories for user operation. The output ports are preferably three or more to achieve better working efficiency and device power density.
[0036] It is worth noting that at least one rectifier module 2 and at least one inverter module 3 are arranged adjacent to each other, and the rectifier second side 21 and the inverter first side 30 are attached to each other. In other embodiments, the inverter module 3 may also be attached to the other side of the rectifier module 2, that is, the rectifier first side 20 of the rectifier module 3 and the inverter second side 31 of the inverter module 3 are attached to each other. In addition, the two inverter modules 3 may also be arranged adjacent to each other, that is, the inverter first side 30 of one of the two inverter modules 3 and the inverter second side 31 of the other are attached to each other. These methods provide lateral expansion of the rectifier module 2 and the inverter module 3 along the first direction, and if the user observes from the front side 22 of the rectifier module 2 or the front side 32 of the inverter module 3, it is an expansion in the left and right direction. Therefore, Figure 1 In the example shown, the corresponding inverter modules 3 are respectively expanded on the second rectifier side 21 and the first rectifier side 20 of the rectifier module 2, and two more inverter modules 3 are expanded on the two inverter modules 3 respectively attached to the second rectifier side 21 and the first rectifier side 20, that is, one rectifier module 2 in the parallel module driver 1 is expanded with four inverter modules 3. However, this is not limited to this, and the number of rectifier modules 2 and inverter modules 3 can be adjusted arbitrarily according to actual needs.
[0037] In one embodiment, the rectifier module 2 and the inverter module 3 can be assembled along the second direction (i.e., the Y-axis direction) respectively, and can be docked with the modular backplane structure, wherein the second direction is perpendicular to the first direction. The modular backplane structure supplies the power required for the operation of the rectifier module 2 and the inverter module 3, or electrically connects the rectifier module 2 and the inverter module 3. In another embodiment, the parallel module driver 1 can support the output of AC output power with a number of axes up to M*(N-1)*K, where M is the number of output ports of a single inverter module 3, N is the number of modular backplane structures, and K is the number of rectifier modules 2, wherein M≥2, N≥2, and K≥1, but the structure is not intended to limit this case.
[0038] Please refer to Figure 2In this embodiment, each inverter module 3 includes a circuit board 33 and at least three groups of power switch circuits 34. At least three groups of power switch circuits 34 are arranged on the circuit board 33 in a staggered manner, and each power switch circuit 34 can receive the DC bus power provided by the rectifier module 2 through the circuit board 33 and the modular backplane structure, and transmit the DC bus power to the inverter module 3 respectively, and the inverter module 3 converts the power into AC output power after conversion, and then outputs the AC output power from the corresponding output port. Since the inverter module 3 of this embodiment includes at least three groups of power switch circuits 34, the inverter module 3 uses at least three groups of power switch circuits 34 to provide at least three AC output powers. Therefore, compared with the traditional inverter module that can only provide single-port AC output power or at most dual-port AC output power, the inverter module 3 of this case is sufficient to cope with higher power requirements. In one embodiment, the parallel module driver 1 of the present case utilizes the characteristic that each inverter module 3 can provide at least three AC output powers. When the parallel module driver 1 is a structure including a rectifier module 2 and expanded with four inverter modules 3, the parallel module driver 1 can provide at least twelve AC output powers, which is much higher than the eight AC output powers that can only be provided by existing products with the same number of modules, and can correspond to the motor drive control of more axes.
[0039] In some embodiments, each power switch circuit 34 includes at least one switch element, such as an insulated gate bipolar transistor (IGBT) or a metal oxide semiconductor field effect transistor (MOSFET). In addition, when the AC output power provided by each power switch circuit 34 is a three-phase AC output power, each power switch circuit 34 may include at least six switch elements to form a three-arm bridge structure through the six switch elements. Figure 2 As shown, all switch elements in each power switch circuit 34 can be packaged using EASY 1B and welded or locked on the circuit board 33. The figure takes locking as an example.
[0040] See also Figure 3 , which is Figure 1 The inverter module 3a of this embodiment is a schematic diagram of the structure of the inverter module in the second embodiment. Figure 2 The structure and function of the inverter module 3 shown are similar, so they are not described here. Figure 1 All the switch elements in the power switch circuit 34 shown are packaged using EASY 1B. All the switch elements in each power switch circuit 34 of the inverter module 3a of this embodiment are packaged using EASY 750. This packaging method can further reduce the area used by the power switch circuit 34 on the circuit board 33, thereby further reducing the size of the device.
[0041] See also Figure 4, which is Figure 1 The inverter module 3b of this embodiment is a schematic diagram of the structure of the inverter module in the third embodiment. Figure 2 The structure and function of the inverter module 3 shown are similar, so they are not described here. Figure 1 All the switching elements in the power switch circuit 34 shown are packaged in a modular manner. Each power switch circuit 34a of the inverter module 3b of this embodiment is composed of multiple discrete switching elements, wherein the multiple switching elements can be respectively composed of a single insulated gate bipolar transistor, a plurality of integrated surface mount (SMD) insulated gate bipolar transistors, or a plurality of integrated plug-in (DIP) insulated gate bipolar transistors. In some embodiments, the IGBT used in the modular power switch circuit 34a is a corresponding product of Starpower's GD35FSX120L2SA, GD25FSX120L2SA, or GD10FSX120L4SNA models, but is not limited to this.
[0042] In summary, the present invention provides a parallel module driver, wherein the inverter module can provide at least three AC output powers, corresponding to the parallel module driver providing twelve AC output powers when one rectifier module is used to expand four inverter modules. This is much higher than the eight AC output powers of existing products configured with the same number of modules, and can correspond to the motor drive control of more axes, so that the inverter module and its parallel module driver can cope with larger power requirements, thereby improving the versatility of the product.
Claims
1. A parallel module driver, characterized in that: Include: At least one rectifier module converts an AC input power energy into a DC bus power energy, and comprises a first rectifier side and a second rectifier side disposed opposite to each other in a first direction; and At least one inverter module, each of the inverter modules includes an inverter first side and an inverter second side arranged opposite to each other in the first direction, and further includes: a circuit board; and At least three groups of power switch circuits are staggeredly arranged on the circuit board, each of the power switch circuits receives the DC bus power and converts it into an AC output power; The at least one inverter module is disposed adjacent to the at least one rectifier module, and the rectifier first side and the corresponding inverter second side are attached to each other, or the rectifier second side and the corresponding inverter first side are attached to each other; and A modular backplane structure; The at least one inverter module and the at least one rectifier module are assembled with the modular backplane structure along a second direction, and the second direction is perpendicular to the first direction; The number of axes of the AC output power can reach M*(N-1)*K, where M is the number of output ports of each inverter module, N is the number of at least one modular backplane structure connected to the at least one rectifier module and the at least one inverter module, and K is the number of the rectifier modules, wherein M≥2, N≥2, and K≥1.
2. The parallel module driver according to claim 1, characterized in that: The AC output power provided by each of the power switch circuits is three-phase AC output power and includes at least six switch elements to form a three-arm bridge structure.
3. The parallel module driver according to claim 1, characterized in that: The power switch circuit has a plurality of switch elements therein, and the plurality of switch elements are packaged using EASY 1B.
4. The parallel module driver according to claim 1, characterized in that: The power switch circuit has a plurality of switch elements therein, and the plurality of switch elements are packaged using EASY 750.
5. The parallel module driver according to claim 1, characterized in that: Each of the power switch circuits is composed of a plurality of discrete switch elements, and the plurality of switch elements are respectively composed of a plurality of single insulated gate bipolar transistors, a plurality of integrated surface mount insulated gate bipolar transistors, or a plurality of integrated plug-in insulated gate bipolar transistors.
6. The parallel module driver according to claim 1, characterized in that: The modular backplane structure includes a plurality of connectors. The at least one rectifier module and the at least one inverter module are respectively connected to at least one of the plurality of connectors of the modular backplane structure along the second direction.
7. The parallel module driver according to claim 1, characterized in that: It comprises one rectifier module, four inverter modules and one modular backplane structure, and provides twelve AC output electric energies through the four inverter modules.
8. The parallel module driver according to claim 1, characterized in that: The power switch circuit has a plurality of switch elements therein, and the plurality of switch elements are packaged in a modular manner.
9. The parallel module driver according to claim 1, characterized in that: The power switch circuit is composed of a plurality of discrete switch elements, wherein the plurality of switch elements can be respectively composed of a single insulated gate bipolar transistor, a plurality of integrated patch-type insulated gate bipolar transistors, or a plurality of integrated plug-in-type insulated gate bipolar transistors.
10. The parallel module driver according to claim 1, characterized in that: The power switch circuit has a plurality of switch elements, wherein the plurality of switch elements include insulated gate bipolar transistors or metal oxide semiconductor field effect transistors.