Power supply module parallel operation system

Abstract

The utility model discloses a power module parallel operation system, belongs to the technical field of power electronic converters, and solves the problem of how to improve the transmission speed, precision and capacity of the power module parallel operation system. Comprising a plurality of power supply modules, the power supply modules are adjacently connected one by one, one power supply module is set as a host, the other power supply modules are a slave 1, a slave 2... a slave n in sequence, each of the host and the slave comprises an optical module and an FPGA module, the external output end of the optical module of the host is connected with the external input end of the optical module of the adjacent slave 1, and the external output end of the optical module of the adjacent slave 2 is connected with the external input end of the optical module of the adjacent slave 1. The external output end of the optical module of the slave n is connected with the external input end of the optical module of the host; the internal output end of the optical module is connected with the input end of the FPGA module, the output end of the FPGA module is connected with the internal input end of the optical module, and the parallel operation system is high in communication speed, high in precision and large in capacity.

Description

Technical Field

[0001] The utility model belongs to the technical field of power electronic converters and relates to a power module parallel system. Background Art

[0002] In the field of power electronics technology, power modules are essential devices for power electronics companies. In practical applications, multiple power modules are connected in parallel to expand current and power, which requires our parallel system to be able to operate quickly, accurately, and reliably. Therefore, the parallel system of power modules is particularly important. With the development of technology and actual needs, the power of power modules is getting larger and larger, and tends to be high power density and high frequency, so the transmission speed requirements for parallel systems are getting higher and higher. At the same time, when multiple power modules are running at the same time, it is necessary to ensure that each power module can operate accurately and reliably, otherwise the capacity (current, power) of the entire system will be limited, and the accuracy will be greatly affected. Utility Model Content

[0003] The technical problem to be solved by the utility model is how to improve the transmission speed, accuracy and capacity of the power module parallel system.

[0004] The utility model solves the above technical problems through the following technical solutions:

[0005] A power module parallel system includes a plurality of power modules, wherein the plurality of power modules are connected adjacent to each other, wherein one power module is set as a host, and the remaining power modules are slaves 1, slave 2, ... slave n in sequence, wherein the host and the plurality of slaves each include an optical module and an FPGA module, wherein an external output end of the optical module of the host is connected to an external input end of an optical module of the adjacent slave 1, and an external output end of the optical module of slave 1 is connected to an external input end of an optical module of slave 2 ... and an external output end of the optical module of slave n is connected to an external input end of the optical module of the host; an internal output end of the optical module is connected to an input end of the FPGA module, and an output end of the FPGA module is connected to an internal input end of the optical module;

[0006] Preferably, the FPGA module includes a data processing and control module and a switch module, the input end of the data processing and control module is connected to the internal output end of the optical module, and the output end of the data processing and control module is connected to the internal input end of the optical module; the input end of the switch module is also connected to the internal output end of the optical module, and the output end of the switch module is also connected to the internal input end of the optical module.

[0007] Preferably, the plurality of power modules are connected via optical fibers.

[0008] The advantages of the utility model are:

[0009] The controller used in the power module of the utility model is an FPGA module with an optical module I0 port. Each power module has an optical module. The optical fiber transmits an optical signal. The optical module converts the optical signal into an electrical signal that can be processed by the FPGA module. The optical module then converts the electrical signal processed and calculated by the controller into an optical signal. When the instructions and parameters sent by the host to all slaves are the same, the switch modules inside the FPGA module are closed while the slave executes the instructions and receives the parameters. The slave does not process the host control instructions and parameters and directly transmits them to the next slave. Within one control cycle, the host's control instructions and parameters are sent to all slaves in turn, realizing fast communication with large transmission capacity and long distance. When the status information of the slave is fed back to the host, the switch modules inside the FPGA modules of other slaves are closed, and the other slaves do not process their status information and transmit it to the host in turn. The host determines the operating status of the entire system according to the information sent by each machine, with high accuracy and fast feedback speed, thereby reducing the communication cycle. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 This is a structural diagram of a power module parallel system according to the first embodiment of the utility model;

[0011] Figure 2 This is a network addressing diagram of a power module parallel system in Embodiment 1 of the present utility model;

[0012] Figure 3 This is a redundant control diagram of a power module parallel system according to the first embodiment of the utility model. DETAILED DESCRIPTION

[0013] In order to make the purpose, technical solution and advantages of the embodiments of the utility model clearer, the technical solution in the embodiments of the utility model will be clearly and completely described below in combination with the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0014] The technical solution of the utility model is further described below in conjunction with the accompanying drawings and specific embodiments of the specification:

[0015] Embodiment 1

[0016] like Figure 1As shown, it is a structural diagram of a power module parallel system of the first embodiment of the utility model. The parallel system described in the utility model includes multiple power modules, each of which is connected through an optical fiber communication network. Each power module can be set arbitrarily, that is, one of the power modules is set as a host and the other power modules are set as slaves, which are slave 1, slave 2...slave n in sequence; the host and several slaves all include an optical module and an FPGA module, the external output end of the optical module of the host is connected to the external input end of the optical module of the adjacent slave 1, the external output end of the optical module of slave 1 is connected to the external input end of the optical module of slave 2...the external output end of the optical module of slave n is connected to the external input end of the optical module of the host; the internal output end of the optical module is connected to the input end of the FPGA module, and the output end of the FPGA module is connected to the internal input end of the optical module. The FPGA module includes a data processing and control module and a switch module. The input end of the data processing and control module is connected to the internal output end of the optical module, and the output end of the data processing and control module is connected to the internal input end of the optical module; the input end of the switch module is also connected to the internal output end of the optical module, and the output end of the switch module is also connected to the internal input end of the optical module.

[0017] When the hardware connection of the parallel system is completed, one power module is set as the master and the other modules are set as slaves. The master sends 0 to the address allocation domain. When the slave receives it, it adds 1 and uses it as its own address. The slave transmits it in turn. After the master receives it in a cycle of the optical fiber ring network, it is used as the total number of parallel machines. In this way, automatic networking and addressing are completed. Figure 2 This is a networking addressing diagram of a power module parallel system in Embodiment 1 of the present utility model.

[0018] In the traditional mode, if one power module in the parallel system fails and cannot output, then the entire parallel system cannot output. The usual practice is to manually adjust the wiring to skip the faulty machine and then reset the parallel system. In actual applications, the power module may be integrated into a sealed cabinet or the parallel wiring may be inconvenient to adjust, which brings inconvenience to use and wastes labor and time costs. The utility model is aimed at faulty machines that may bring safety hazards to the system. Figure 3 , which is a redundant control diagram of a power module parallel system in the first embodiment of the utility model. The utility model closes the internal switch module of the FPGA module, and the system skips the faulty slave machine to re-network and address. When transmitting control instructions and status signals, the faulty machine is directly skipped and not processed, and transparent transmission is performed, which greatly ensures the safety and stability of the system. The failure of one or more machines will not affect the use of the entire parallel system.

[0019] Through the above arrangement, the power module parallel system described in the utility model has fast communication speed, large transmission capacity, strong anti-interference ability, and long transmission distance, and can realize a large number of power modules in the parallel system, safe and reliable operation, and at the same time, simple setting and connection, easy use, and the host and slave can be set arbitrarily after the hardware is connected, and the failure of one or several units will not affect the use of the entire parallel system, and the control method is also relatively simple and easy to implement, and the hardware circuit is also easy to implement, without adding other circuits, and the economy is good.

[0020] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A power module parallel system, characterized in that: The invention comprises a plurality of power modules, which are connected adjacent to each other one by one. One of the power modules is set as a host, and the other power modules are slaves 1, slave 2, ... slave n in sequence. The host and the plurality of slaves all comprise an optical module and an FPGA module. The external output end of the optical module of the host is connected to the external input end of the optical module of the adjacent slave 1, the external output end of the optical module of slave 1 is connected to the external input end of the optical module of slave 2 ... the external output end of the optical module of slave n is connected to the external input end of the optical module of the host; the internal output end of the optical module is connected to the input end of the FPGA module, and the output end of the FPGA module is connected to the internal input end of the optical module.

2. A power module parallel system according to claim 1, characterized in that: The FPGA module includes a data processing and control module and a switch module. The input end of the data processing and control module is connected to the internal output end of the optical module, and the output end of the data processing and control module is connected to the internal input end of the optical module; the input end of the switch module is also connected to the internal output end of the optical module, and the output end of the switch module is also connected to the internal input end of the optical module.

3. The power module parallel system according to claim 1, characterized in that: The plurality of power modules are connected via optical fibers.

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