Semi-physical simulation hardware platform for simulating parallel operation of multiple PCSs

Abstract

The utility model discloses a semi-physical simulation hardware platform used for simulating parallel operation of a plurality of PCSs, comprising an expansion base plate, PCS core modules, an RTLAB real-time digital simulation system and an Ethernet switch, the expansion base plate is provided with a plurality of PCS core modules, the PCS core modules are respectively connected with the RTLAB real-time digital simulation system, the Ethernet switch is connected with the PCS core modules, and the PCS core modules are respectively connected with the RTLAB real-time digital simulation system. And the PCS core module and the RTLAB real-time digital simulation system are respectively connected with the Ethernet switch, so that the test cost and risk can be reduced, parameters of an actual prototype can be better met, and the complex working condition of parallel operation of a plurality of PCSs can be simulated.

Description

Technical Field

[0001] This utility model relates to the technical field of power electronic equipment simulation, and in particular to the technical field of a hardware-in-the-loop simulation platform for simulating the parallel operation of multiple PCS. Background Technology

[0002] Currently, PCS (Power Conversion System) has been widely used worldwide, covering multiple industries such as new energy power plants, microgrids, smart grids, transportation, shipping, wind power, and solar energy. With the introduction of new hardware architectures and control strategies, the efficiency and reliability of PCS have been further improved. For example, the iterative updates of grid-type converter control modes and the improvement of hardware capabilities for multiple units operating in parallel reflect the continuous innovation of industry technology. The development and application of these new technologies require extensive experimentation, testing, and improvement. Currently, the commonly used testing methods are as follows: 1. Testing with a fully functional PCS unit. This method is not only costly but also carries significant risks when testing new technical solutions; 2. Simulation using software (such as Matlab). This method results in significant differences between the mathematical model and the parameters of the actual prototype and cannot effectively simulate the complex operating conditions of multiple PCS units operating in parallel. Summary of the Invention

[0003] The purpose of this invention is to solve the problems in the prior art and propose a hardware platform for simulating the parallel operation of multiple PCS, which can reduce testing costs and risks, better match the parameters of the actual prototype, and simulate the complex working conditions of multiple PCS operating in parallel.

[0004] To achieve the above objectives, this utility model proposes a hardware platform for simulating the parallel operation of multiple PCSs, including an expansion baseboard, PCS core modules, an RTLAB real-time digital simulation system, and an Ethernet switch. The expansion baseboard is equipped with multiple PCS core modules, which are connected to the RTLAB real-time digital simulation system. The PCS core modules and the RTLAB real-time digital simulation system are connected to the Ethernet switch.

[0005] Preferably, the number of PCS core modules is up to 12, and a power module is provided on the expansion base plate for each PCS core module.

[0006] Preferably, the PCS core modules are connected via a CAN bus for communication.

[0007] Preferably, the RTLAB real-time digital simulation system simulates signals from power grid, battery, and other energy storage system related equipment.

[0008] Preferably, the PCS core module simulates PCS device signals, and the parallel operation mode of the PCS core module is any one of the following: multiple PCS core modules connected in parallel on the AC side, connected in parallel on the DC side, or connected in parallel on both the AC and DC sides.

[0009] Preferably, the PCS core module has a dual-core architecture of MCU1 and MCU2. MCU1 is connected to the RTLAB real-time digital simulation system and the power module, respectively. MCU2 is connected to the Ethernet switch, the power module and the CAN bus, respectively. MCU1 and MCU2 are connected via SPI communication.

[0010] The beneficial effects of this utility model are as follows: This utility model combines an expansion baseboard, a PCS core module, an RTLAB real-time digital simulation system, and an Ethernet switch. Through experimental optimization, the PCS core module is designed to simulate various functions of the entire PCS machine. The expansion baseboard is designed to carry multiple of the above-mentioned PCS core modules, providing power to the core modules and transferring signals for external interaction between the core modules. A CAN bus is used to realize communication between the core modules. RTLAB (Real Time Laboratory) is used to simulate the power grid, batteries, and other energy storage system-related equipment. An Ethernet switch is used to connect each PCS core module and RTLAB via Ethernet, enabling interaction between the hardware platform and external devices, thus increasing the platform's compatibility and scalability.

[0011] The features and advantages of this utility model will be described in detail through embodiments and accompanying drawings. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of a hardware platform for simulating the parallel operation of multiple PCS.

[0013] Figure 2 This is a schematic diagram of the core module structure of a hardware-in-the-loop (PCS) simulation platform for simulating the parallel operation of multiple PCS systems. Detailed Implementation

[0014] See Figure 1 and Figure 2This utility model discloses a hardware platform for simulating the parallel operation of multiple PCS (Physical Computer Systems), comprising an expansion baseboard, PCS core modules, an RTLAB (Real-Time Digital Simulation System), and an Ethernet switch. The expansion baseboard has multiple PCS core modules, each connected to the RTLAB system. Both the PCS core modules and the RTLAB system are connected to the Ethernet switch. The number of PCS core modules can be up to 12. Each PCS core module on the expansion baseboard has a power supply module. The PCS core modules are connected via a CAN bus for communication. The RTLAB real-time digital simulation system simulates signals from power grid, battery, and other energy storage system related equipment. The PCS core module simulates PCS equipment signals. The parallel operation mode of the PCS core module is any one of the following: multiple PCS core modules connected in parallel on the AC side, in parallel on the DC side, or in parallel on both AC and DC sides. The PCS core module has a dual-core architecture of MCU1 and MCU2. MCU1 is connected to the RTLAB real-time digital simulation system and the power module, respectively. MCU2 is connected to the Ethernet switch, the power module, and the CAN bus, respectively. MCU1 and MCU2 are connected via SPI communication.

[0015] This invention combines an expansion baseboard, PCS core modules, an RTLAB real-time digital simulation system, and an Ethernet switch. Through experimental optimization, multiple PCSs are simulated by multiple PCS core modules. The PCS core modules are plugged into the expansion baseboard, which supplies power and converts various analog and digital signals. The PCS core modules communicate with each other via a CAN bus to achieve parallel operation. The hardware platform is a hardware system consisting of an expansion baseboard with multiple PCS core modules, RTLAB, and an Ethernet switch. The parallel operation involves multiple PCS units connected in parallel on the AC side, DC side, or both AC and DC sides. The RTLAB simulates the operating state of the power grid and battery, outputting analog signals. The PCS core module receives the analog signals output by the RTLAB, analyzes and calculates them, and then outputs PWM waves to control the operating state of the power grid and battery simulated by the RTLAB. Furthermore, the RTLAB can also simulate the state of other related devices in the energy storage system through digital I / O signals, interacting with the PCS core module to simulate the operation of the entire energy storage system. Through an Ethernet switch, each PCS core module and the RTLAB are connected via Ethernet, enabling interaction between the hardware platform and external devices. The hardware platform can receive instructions from external devices and output its operating status and various parameters to the external devices, increasing the platform's compatibility and scalability. The PCS core module internally uses a dual-core architecture of MCU1 and MCU2. The PCS core module receives the analog signals output by the RTLAB, processes them through internal circuitry, and then inputs them to MCU1. The algorithm kernel in MCU1 analyzes and calculates each analog signal before outputting a PWM wave to the RTLAB. Ethernet and CAN communication are implemented by MCU2. MCU1 and MCU2 communicate via SPI. Through the cooperation of various devices in the hardware-in-the-loop simulation platform, various PCS control strategies can be simulated in a more realistic manner, and complex conditions such as multiple PCS operating in parallel can also be simulated.

[0016] The above embodiments are illustrative of the present invention and are not intended to limit the present invention. Any simple modifications to the present invention are within the protection scope of the present invention.

Claims

1. A hardware-in-the-loop simulation platform for simulating the parallel operation of multiple PCS, characterized in that: It includes an expansion baseboard, a PCS core module, an RTLAB real-time digital simulation system, and an Ethernet switch. The expansion baseboard is equipped with multiple PCS core modules, which are connected to the RTLAB real-time digital simulation system. The PCS core modules and the RTLAB real-time digital simulation system are connected to the Ethernet switch.

2. The hardware platform for simulating the parallel operation of multiple PCS as described in claim 1, characterized in that: The number of PCS core modules is up to 12, and a power supply module is provided on the expansion base plate for each PCS core module.

3. The hardware platform for simulating the parallel operation of multiple PCS as described in claim 1, characterized in that: The core modules of the PCS are connected via a CAN bus for communication.

4. The hardware-in-the-loop simulation platform for simulating the parallel operation of multiple PCS as described in claim 1, characterized in that: The RTLAB real-time digital simulation system simulates signals from power grids, batteries, and other energy storage system equipment.

5. A hardware-in-the-loop simulation platform for simulating the parallel operation of multiple PCS as described in claim 1, characterized in that: The PCS core module simulates PCS device signals. The parallel operation mode of the PCS core module is any one of the following: multiple PCS core modules are connected in parallel on the AC side, in parallel on the DC side, or in parallel on both the AC and DC sides.

6. A hardware-in-the-loop simulation platform for simulating the parallel operation of multiple PCS as described in any one of claims 1 to 5, characterized in that: The PCS core module has a dual-core architecture of MCU1 and MCU2. MCU1 is connected to the RTLAB real-time digital simulation system and the power module, respectively. MCU2 is connected to the Ethernet switch, the power module and the CAN bus, respectively. MCU1 and MCU2 are connected via SPI communication.

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