A multi-functional power converter platform

Abstract

The application discloses a kind of multifunctional power converter platforms, it is related to power converter technical field, including: base, multiple power switch modules, multiple drive units, filter, input-output interface unit, DC capacitor pair and control unit;Multiple drive units are electrically connected one-to-one with multiple power switch modules, control unit is electrically connected with multiple drive units, input-output interface unit is electrically connected with multiple filter, DC capacitor pair is electrically connected with input-output interface unit and multiple power switch modules;Multiple power switch modules are used to connect filter in different ways, and control unit is used to control multiple drive units to turn on or disconnect corresponding multiple power switch modules, to form different power converter.The application can realize the power converter of multiple topological structures, realize the power test verification of multiple power supply schemes, can reduce the kind, quantity and site space of power converter in power supply research and development, reduce cost.

Description

Technical Field

[0001] This invention relates to the field of power converter technology, and in particular to a multifunctional power converter platform. Background Technology

[0002] Currently, there are many types of power converter topologies and diverse structural forms, involving AC / DC, DC / AC, and DC / DC power conversion types. Based on the power conversion direction, they are further divided into unidirectional and bidirectional power converters. During the development of various power converters, it is necessary to build an experimental verification environment to test and verify the circuit topology and control scheme, in order to identify technical risks and verify the feasibility of the scheme.

[0003] As companies diversify their power supply businesses, they will be involved in various power converter topologies, each requiring a matching testing and verification platform. Therefore, the long-term development of a company's power supply business necessitates investment in a significant number and variety of power testing platforms, resulting in high costs, substantial site investment, and lengthy development cycles. Summary of the Invention

[0004] This invention provides a multifunctional power converter platform to address the technical problem that existing technologies require a large number and variety of power converter testing platforms for power product research and development, resulting in high device costs, large space requirements, and long development cycles.

[0005] This invention provides a multifunctional power converter platform, including: a base, multiple power switch modules, multiple drive units, a filter, an input / output interface unit, DC capacitor pairs, and a control unit;

[0006] Multiple power switch modules, multiple drive units, multiple filters, an input / output interface unit, a DC capacitor pair, and a control unit are all mounted on the base. The multiple drive units are electrically connected to the multiple power switch modules in a one-to-one correspondence. The control unit is electrically connected to the multiple drive units. The input / output interface unit is electrically connected to the multiple filters. The DC capacitor pair is electrically connected to the input / output interface unit and the multiple power switch modules.

[0007] Multiple power switch modules are used to connect the filter in different ways, and the control unit is used to control multiple drive units to turn on or off the corresponding multiple power switch modules to form different power converters.

[0008] In some embodiments, there are nine power switch modules, namely: power switch module A1, power switch module A2, power switch module A3, power switch module B1, power switch module B2, power switch module B3, power switch module C1, power switch module C2, and power switch module C3.

[0009] In some embodiments, the first terminals of the power switch module A1, power switch module B1, and power switch module C1 are connected to the first terminals of the DC capacitor pair;

[0010] The second terminals of power switch modules A2, B2, and C2 are connected to the second terminals of the DC capacitor pair.

[0011] The third terminals of power switch modules A3, B3, and C3 are connected to the third terminal of the DC capacitor pair.

[0012] The third terminal of power switch module A1 is connected to the first terminal of power switch module A3, and the third terminal of power switch module A2 is connected to the second terminal of power switch module A3; the third terminal of power switch module B1 is connected to the first terminal of power switch module B3, and the third terminal of power switch module B2 is connected to the second terminal of power switch module B3; the third terminal of power switch module C1 is connected to the first terminal of power switch module C3, and the third terminal of power switch module C2 is connected to the second terminal of power switch module C3.

[0013] The second end of the power switch module A1 is connected to the first end of the power switch module A2 and then to the first end of the filter. The second end of the power switch module B1 is connected to the first end of the power switch module B2 and then to the first end of the filter. The second end of the power switch module C1 is connected to the first end of the power switch module C2 and then to the first end of the filter.

[0014] In some embodiments, the first terminals of the power switch module A3, power switch module B3, and power switch module C3 are connected to the first terminals of the DC capacitor pair;

[0015] The second terminals of power switch modules A3, B3, and C3 are connected to the second terminals of the DC capacitor pair.

[0016] The third terminal of the power switch module A3 is connected to the first terminal of the power switch module A1 and then to the first terminal of the filter; the third terminal of the power switch module B3 is connected to the first terminal of the power switch module B1 and then to the second terminal of the filter; the third terminal of the power switch module C3 is connected to the first terminal of the power switch module C1 and then to the third terminal of the filter.

[0017] The second end of the power switch module A1 is connected to the second end of the power switch module A2, the second end of the power switch module B1 is connected to the second end of the power switch module B2, and the second end of the power switch module C1 is connected to the second end of the power switch module B2.

[0018] The first terminal of power switch module A2, the first terminal of power switch module B2, and the first terminal of power switch module C2 are all connected to the third terminal of the DC capacitor pair.

[0019] In some embodiments, the control unit is used to control the nine drive units to turn on or off the corresponding power switch modules A1, A2, A3, B1, B2, B3, C1, C2, and C3;

[0020] In some embodiments, the control unit is used to control the six drive units to turn on or off the corresponding power switch modules A1, A2, B1, B2, C1, and C2, and the control unit is also used to control the three drive units to continuously disconnect the corresponding power switch modules A3, B3, and C3.

[0021] In some embodiments, the filter is an LCL filter, which includes inductors L1A, L2A, L3A, L1B, L2B, L3B, capacitors CA, CB, and CC.

[0022] The first terminals of inductor L1A, inductor L2A, and inductor L3A serve as the first, second, and third terminals of the filter, respectively.

[0023] The second end of inductor L1A is connected to the first end of inductor L1B, the second end of inductor L2A is connected to the first end of inductor L2B, and the second end of inductor L3A is connected to the first end of inductor L3B.

[0024] The first terminal of capacitor CA is connected to the common terminal of inductors L1A and L2A, and the second terminal of capacitor CA is connected to the common terminal of inductors L2A and L2B; the first terminal of capacitor CB is connected to the common terminal of inductors L2A and L2B, and the second terminal of capacitor CB is connected to the common terminal of inductors L3A and L3B; the first terminal of capacitor CC is connected to the common terminal of inductors L3A and L3B, and the second terminal of capacitor CC is connected to the common terminal of inductors L1A and L1B.

[0025] In some embodiments, the multi-functional power converter platform further includes:

[0026] The acquisition unit is mounted on the base and is electrically connected to the plurality of power switch modules, the filter, the input / output interface unit, the DC capacitor pair and the control unit.

[0027] In some embodiments, the multi-functional power converter platform further includes:

[0028] The power supply unit is connected to the acquisition unit, the control unit, the drive unit and the input / output interface unit.

[0029] In some embodiments, the power switch module is an IGBT module.

[0030] The beneficial effects of the technical solution provided by this invention include:

[0031] This invention provides a multifunctional power converter platform, which is equipped with multiple power switch modules. These power switch modules can be connected to filters in different ways, and the control unit drives the multiple power switch modules in different ways by controlling multiple drive units. This allows for flexible implementation of power converters with various topologies, conveniently achieving the effect of "one machine for multiple uses". It enables power testing and verification of various power supply solutions, significantly reducing the types, quantities, and space required for power converters in power supply R&D and testing, lowering R&D costs, and enhancing versatility. Attached Figure Description

[0032] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0033] Figure 1 This is a schematic diagram of the structure of a multifunctional power converter platform provided in an embodiment of the present invention;

[0034] Figure 2 A schematic block diagram of a multifunctional power converter platform provided in an embodiment of the present invention;

[0035] Figure 3 A circuit diagram of a multifunctional power converter platform provided in this embodiment of the invention, serving as a power converter;

[0036] Figure 4 A circuit diagram of a multifunctional power converter platform as another power converter provided in an embodiment of the present invention;

[0037] Figure label:

[0038] 1. Base;

[0039] 2. Multiple power switch modules;

[0040] 3. Multiple drive units;

[0041] 4. Filter;

[0042] 5. Input / output interface unit;

[0043] 6. DC capacitor pair;

[0044] 7. Control unit;

[0045] 8. Data Acquisition Unit;

[0046] 9. Power supply unit. Detailed Implementation

[0047] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0048] This invention provides a multifunctional power converter platform that solves the technical problem that existing technologies require a large number and variety of power converter test platforms for power product research and development testing and verification, resulting in high device costs, large space requirements, and long development cycles.

[0049] See Figure 1 , Figure 2 and Figure 3As shown, this embodiment of the invention provides a multifunctional power converter platform, including: a base 1, multiple power switch modules 2, multiple drive units 3, a filter 4, an input / output interface unit 5, DC capacitor pairs 6, and a control unit 7.

[0050] Multiple power switch modules 2, multiple drive units 3, multiple filters 4, input / output interface units 5, DC capacitor pairs 6, and control units 7 are all mounted on the base 1. The multiple drive units 3 are electrically connected to the multiple power switch modules 2 in a one-to-one correspondence. The control unit 7 is electrically connected to the multiple drive units 3. The input / output interface units 5 are electrically connected to the multiple filters 4. The DC capacitor pairs 6 are electrically connected to the input / output interface units 5 and the multiple power switch modules 2.

[0051] Multiple power switch modules 2 are used to connect to the filter 4 in different ways, and are controlled by the control unit to drive multiple drive units 3 to form different power converters.

[0052] The multi-functional power converter platform in this embodiment of the invention is equipped with multiple power switch modules. These power switch modules can be connected to filters in different ways, and the control unit drives the multiple power switch modules in different ways by controlling multiple drive units. This allows for flexible implementation of power converters with various topologies, conveniently achieving the effect of "one machine for multiple uses". It enables power testing and verification of various power supply solutions, significantly reducing the types, quantities, and space required for power converters in power supply R&D and testing, lowering R&D costs, and enhancing versatility.

[0053] As an optional implementation, in one embodiment of the invention, see [link to relevant documentation]. Figure 3 As shown, there are nine power switch modules 2, namely: power switch module A1, power switch module A2, power switch module A3, power switch module B1, power switch module B2, power switch module B3, power switch module C1, power switch module C2, and power switch module C3. Optionally, the power switch modules 2 are IGBT modules, and each IGBT module includes two power switching devices.

[0054] Furthermore, the first terminals of the power switch module A1, power switch module B1, and power switch module C1 are connected to the first terminal of the DC capacitor pair 6.

[0055] The second terminals of power switch modules A2, B2, and C2 are connected to the second terminal of the DC capacitor pair 6.

[0056] The third terminals of power switch modules A3, B3, and C3 are connected to the third terminal of the DC capacitor pair 6. The DC capacitor pair 6 includes a DC capacitor CP and a DC capacitor CN. The first terminal of the DC capacitor CP serves as the first terminal of the DC capacitor pair 6, the first terminal of the DC capacitor CN serves as the second terminal of the DC capacitor pair 6, and the common terminal formed by connecting the second terminals of the DC capacitor CP and the second terminals of the DC capacitor CN serves as the third terminal of the DC capacitor pair 6.

[0057] The third terminal of power switch module A1 is connected to the first terminal of power switch module A3, and the third terminal of power switch module A2 is connected to the second terminal of power switch module A3; the third terminal of power switch module B1 is connected to the first terminal of power switch module B3, and the third terminal of power switch module B2 is connected to the second terminal of power switch module B3; the third terminal of power switch module C1 is connected to the first terminal of power switch module C3, and the third terminal of power switch module C2 is connected to the second terminal of power switch module C3.

[0058] The second end of the power switch module A1 is connected to the first end of the power switch module A2 and then to the first end of the filter 4. The second end of the power switch module B1 is connected to the first end of the power switch module B2 and then to the first end of the filter 4. The second end of the power switch module C1 is connected to the first end of the power switch module C2 and then to the first end of the filter 4.

[0059] based on Figure 3 If the control unit controls the nine drive units 3 to turn on or off the power switch modules A1, A2, A3, B1, B2, B3, C1, C2, and C3, an ANPC three-phase three-level PWM power converter can be obtained.

[0060] based on Figure 3 In the connection method, if the control unit controls the six drive units 3 to turn on or off the power switch modules A1, A2, B1, B2, C1, and C2, and the control unit also controls the three drive units 3 to continuously disconnect the power switch modules A3, B3, and C3, a diode-clamped bidirectional three-phase three-level PWM power converter is obtained.

[0061] As an optional implementation, in one embodiment of the invention, see [link to relevant documentation]. Figure 4As shown, the first terminals of power switch modules A3, B3, and C3 are connected to the first terminal of the DC capacitor pair 6.

[0062] The second terminals of power switch modules A3, B3, and C3 are connected to the second terminal of the DC capacitor pair 6.

[0063] The third terminal of the power switch module A3 is connected to the first terminal of the power switch module A1 and then to the first terminal of the filter 4. The third terminal of the power switch module B3 is connected to the first terminal of the power switch module B1 and then to the second terminal of the filter 4. The third terminal of the power switch module C3 is connected to the first terminal of the power switch module C1 and then to the third terminal of the filter 4.

[0064] The second end of the power switch module A1 is connected to the second end of the power switch module A2, the second end of the power switch module B1 is connected to the second end of the power switch module B2, and the second end of the power switch module C1 is connected to the second end of the power switch module B2.

[0065] The first terminal of power switch module A2, the first terminal of power switch module B2, and the first terminal of power switch module C2 are all connected to the third terminal of DC capacitor pair 6.

[0066] based on Figure 4 With the connection method described above, if the control unit controls the nine drive units 3 to turn on or off the corresponding power switch modules A1, A2, A3, B1, B2, B3, C1, C2, and C3, a T-type bidirectional three-phase three-level PWM power converter can be obtained.

[0067] based on Figure 4 In the connection method, if the control unit controls the six drive units 3 to turn on or off the corresponding power switch modules A1, A2, B1, B2, C1, and C2, and the control unit also controls the three drive units 3 to continuously disconnect the power switch modules A3, B3, and C3, a three-phase VIENNA power converter can be obtained.

[0068] As an optional implementation, in one embodiment of the invention, see [link to relevant documentation]. Figure 3As shown, the filter 4 is an LCL filter, which includes inductors L1A, L2A, L3A, L1B, L2B, L3B, capacitors CA, CB, and CC.

[0069] The first terminals of inductor L1A, inductor L2A, and inductor L3A serve as the first, second, and third terminals of filter 4, respectively.

[0070] The second end of inductor L1A is connected to the first end of inductor L1B, the second end of inductor L2A is connected to the first end of inductor L2B, and the second end of inductor L3A is connected to the first end of inductor L3B.

[0071] The first terminal of capacitor CA is connected to the common terminal of inductors L1A and L2A, and the second terminal of capacitor CA is connected to the common terminal of inductors L2A and L2B; the first terminal of capacitor CB is connected to the common terminal of inductors L2A and L2B, and the second terminal of capacitor CB is connected to the common terminal of inductors L3A and L3B; the first terminal of capacitor CC is connected to the common terminal of inductors L3A and L3B, and the second terminal of capacitor CC is connected to the common terminal of inductors L1A and L1B.

[0072] As an optional implementation, in one embodiment of the invention, see [link to relevant documentation]. Figure 1 and Figure 2 As shown, the multi-functional power converter platform further includes a data acquisition unit 8, which is mounted on the base 1 and electrically connected to multiple power switch modules 2, the filter 4, the input / output interface unit 5, the DC capacitor pair 6, and the control unit 7. The data acquisition unit 8 can acquire voltage or current information from the multiple power switch modules 2, the filter 4, the input / output interface unit 5, and the DC capacitor pair 6, and then transmit this information to the control unit 7 for corresponding control.

[0073] As an optional implementation, in one embodiment of the invention, see [link to relevant documentation]. Figure 1 and Figure 2 As shown, the multi-functional power converter platform further includes a power supply unit 9, which is connected to the acquisition unit 8, the control unit 7, the drive unit 3 and the input / output interface unit 5. The power supply unit 9 is used to obtain power from the input / output interface unit 5 and then provide it to the acquisition unit 8, the control unit 7 and the drive unit 3.

[0074] In the description of this invention, it should be noted that the terms "upper," "lower," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Unless otherwise expressly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two elements. For those skilled in the art, the specific meaning of the above terms in this invention can be understood according to the specific circumstances.

[0075] It should be noted that in this invention, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0076] The above description is merely a specific embodiment of the present invention, enabling those skilled in the art to understand or implement the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features of the invention herein.

Claims

1. A multifunctional power converter platform, characterized in that, include: Base (1), multiple power switch modules (2), multiple drive units (3), filter (4), input / output interface unit (5), DC capacitor pair (6) and control unit (7); Multiple power switch modules (2), multiple drive units (3), multiple filters (4), input / output interface units (5), DC capacitor pairs (6), and control units (7) are all mounted on the base (1). Multiple drive units (3) are electrically connected to multiple power switch modules (2) in a one-to-one correspondence. The control unit (7) is electrically connected to multiple drive units (3). The input / output interface unit (5) is electrically connected to multiple filters (4). The DC capacitor pairs (6) are electrically connected to the input / output interface unit (5) and multiple power switch modules (2). as well as Multiple power switch modules (2) are used to connect the filter (4) in different ways, and the control unit is used to control multiple drive units (3) to turn on or off the corresponding multiple power switch modules (2) to form different power converters; The power switch modules (2) consist of nine modules: power switch module A1, power switch module A2, power switch module A3, power switch module B1, power switch module B2, power switch module B3, power switch module C1, power switch module C2, and power switch module C3. The first terminals of the power switch modules A1, B1 and C1 are connected to the first terminal of the DC capacitor pair (6); The second terminals of the power switch modules A2, B2 and C2 are connected to the second terminal of the DC capacitor pair (6); The third terminals of power switch modules A3, B3 and C3 are connected to the third terminal of the DC capacitor pair (6); The third terminal of power switch module A1 is connected to the first terminal of power switch module A3, and the third terminal of power switch module A2 is connected to the second terminal of power switch module A3; the third terminal of power switch module B1 is connected to the first terminal of power switch module B3, and the third terminal of power switch module B2 is connected to the second terminal of power switch module B3; the third terminal of power switch module C1 is connected to the first terminal of power switch module C3, and the third terminal of power switch module C2 is connected to the second terminal of power switch module C3. The second end of the power switch module A1 is connected to the first end of the power switch module A2 and then to the first end of the filter (4). The second end of the power switch module B1 is connected to the first end of the power switch module B2 and then to the first end of the filter (4). The second end of the power switch module C1 is connected to the first end of the power switch module C2 and then to the first end of the filter (4).

2. The multifunctional power converter platform according to claim 1, characterized in that: The control unit is used to control the nine drive units (3) to turn on or off the corresponding power switch modules A1, A2, A3, B1, B2, B3, C1, C2, and C3.

3. The multifunctional power converter platform according to claim 1, characterized in that: The control unit is used to control the six drive units (3) to turn on or off the corresponding power switch modules A1, A2, B1, B2, C1 and C2, and the control unit is also used to control the three drive units (3) to continuously disconnect the corresponding power switch modules A3, B3 and C3.

4. The multifunctional power converter platform according to claim 1, characterized in that: The filter (4) is an LCL filter, which includes inductors L1A, L2A, L3A, L1B, L2B, L3B, capacitors CA, CB and CC. The first end of inductor L1A, the first end of inductor L2A, and the first end of inductor L3A serve as the first end, the second end, and the third end of the filter (4), respectively. The second end of inductor L1A is connected to the first end of inductor L1B, the second end of inductor L2A is connected to the first end of inductor L2B, and the second end of inductor L3A is connected to the first end of inductor L3B. The first terminal of capacitor CA is connected to the common terminal of inductors L1A and L2A, and the second terminal of capacitor CA is connected to the common terminal of inductors L2A and L2B; the first terminal of capacitor CB is connected to the common terminal of inductors L2A and L2B, and the second terminal of capacitor CB is connected to the common terminal of inductors L3A and L3B; the first terminal of capacitor CC is connected to the common terminal of inductors L3A and L3B, and the second terminal of capacitor CC is connected to the common terminal of inductors L1A and L1B.

5. The multifunctional power converter platform according to claim 1, characterized in that, Also includes: The acquisition unit (8) is located on the base (1) and is electrically connected to the multiple power switch modules (2), the filter (4), the input / output interface unit (5), the DC capacitor pair (6) and the control unit (7).

6. The multifunctional power converter platform according to claim 5, characterized in that, Also includes: The power supply unit (9) is connected to the acquisition unit (8), the control unit (7), the drive unit (3) and the input / output interface unit (5).

7. The multifunctional power converter platform according to claim 1, characterized in that: The power switch module (2) is an IGBT module.

8. A multifunctional power converter platform, characterized in that, include: Base (1), multiple power switch modules (2), multiple drive units (3), filter (4), input / output interface unit (5), DC capacitor pair (6) and control unit (7); Multiple power switch modules (2), multiple drive units (3), multiple filters (4), input / output interface units (5), DC capacitor pairs (6), and control units (7) are all mounted on the base (1). Multiple drive units (3) are electrically connected to multiple power switch modules (2) in a one-to-one correspondence. The control unit (7) is electrically connected to multiple drive units (3). The input / output interface unit (5) is electrically connected to multiple filters (4). The DC capacitor pairs (6) are electrically connected to the input / output interface unit (5) and multiple power switch modules (2). as well as Multiple power switch modules (2) are used to connect the filter (4) in different ways, and the control unit is used to control multiple drive units (3) to turn on or off the corresponding multiple power switch modules (2) to form different power converters; The power switch modules (2) consist of nine modules: power switch module A1, power switch module A2, power switch module A3, power switch module B1, power switch module B2, power switch module B3, power switch module C1, power switch module C2, and power switch module C3. The first terminals of the power switch modules A3, B3 and C3 are connected to the first terminal of the DC capacitor pair (6); The second terminals of the power switch modules A3, B3 and C3 are connected to the second terminal of the DC capacitor pair (6); The third end of the power switch module A3 is connected to the first end of the power switch module A1 and then connected to the first end of the filter (4). The third end of the power switch module B3 is connected to the first end of the power switch module B1 and then connected to the second end of the filter (4). The third end of the power switch module C3 is connected to the first end of the power switch module C1 and then connected to the third end of the filter (4). The second end of the power switch module A1 is connected to the second end of the power switch module A2, the second end of the power switch module B1 is connected to the second end of the power switch module B2, and the second end of the power switch module C1 is connected to the second end of the power switch module B2. The first end of the power switch module A2, the first end of the power switch module B2, and the first end of the power switch module C2 are all connected to the third end of the DC capacitor pair (6).

9. The multifunctional power converter platform according to claim 8, characterized in that: The control unit is used to control the nine drive units (3) to turn on or off the corresponding power switch modules A1, A2, A3, B1, B2, B3, C1, C2, and C3.

10. The multifunctional power converter platform according to claim 8, characterized in that: The control unit is used to control the six drive units (3) to turn on or off the corresponding power switch modules A1, A2, B1, B2, C1 and C2, and the control unit is also used to control the three drive units (3) to continuously disconnect the corresponding power switch modules A3, B3 and C3.

11. The multifunctional power converter platform according to claim 8, characterized in that: The filter (4) is an LCL filter, which includes inductors L1A, L2A, L3A, L1B, L2B, L3B, capacitors CA, CB and CC. The first end of inductor L1A, the first end of inductor L2A, and the first end of inductor L3A serve as the first end, the second end, and the third end of the filter (4), respectively. The second end of inductor L1A is connected to the first end of inductor L1B, the second end of inductor L2A is connected to the first end of inductor L2B, and the second end of inductor L3A is connected to the first end of inductor L3B. The first terminal of capacitor CA is connected to the common terminal of inductors L1A and L2A, and the second terminal of capacitor CA is connected to the common terminal of inductors L2A and L2B; the first terminal of capacitor CB is connected to the common terminal of inductors L2A and L2B, and the second terminal of capacitor CB is connected to the common terminal of inductors L3A and L3B; the first terminal of capacitor CC is connected to the common terminal of inductors L3A and L3B, and the second terminal of capacitor CC is connected to the common terminal of inductors L1A and L1B.

12. The multifunctional power converter platform according to claim 8, characterized in that, Also includes: The acquisition unit (8) is located on the base (1) and is electrically connected to the multiple power switch modules (2), the filter (4), the input / output interface unit (5), the DC capacitor pair (6) and the control unit (7).

13. The multifunctional power converter platform according to claim 12, characterized in that, Also includes: The power supply unit (9) is connected to the acquisition unit (8), the control unit (7), the drive unit (3) and the input / output interface unit (5).

14. The multifunctional power converter platform according to claim 8, characterized in that: The power switch module (2) is an IGBT module.

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