A high-performance inverter controller

Abstract

The invention provides a high-performance variable frequency controller, the controller adopts a floating-point DSP core (1), an FPGA core (2), and an ARM core (3) three-core framework, and the floating-point DSP core (1) is used to realize Various control algorithms of the motor, including VF control, open-loop vector control, and closed-loop vector control; the FPGA core (2) is used to realize various control logic processing of frequency converters, encoder speed measurement, fault handling, ADC control and digital filtering and the storage of frequency converter signals; the ARM core (3) is used to realize various communication protocols required by the frequency converter, including USB, SCI, SPI, CAN, SDIO, Ethernet; the floating-point DSP core (1) and Between the FPGA cores (2) and between the FPGA cores (2) and the ARM cores (3), a bus connection is used, and between the floating-point DSP cores (1) and the ARM cores (3) are carried out by the FPGA core (2). High speed parallel communication. Each MCU of the controller has a clear division of labor and can adapt to the communication needs of various advanced automated production lines.

Description

technical field [0001] The invention relates to the technical field of frequency converter control, in particular to a high-performance frequency conversion controller. Background technique [0002] The frequency converter is a power control device that uses frequency conversion technology and microelectronics technology to control the AC motor by changing the frequency of the motor's working power supply. With the expansion of the market and the diversification of user needs, the functions of inverter products in the domestic and foreign markets are constantly improving, the degree of integration and systematization is getting higher and higher, and the operation is more convenient. At the same time, special inverters for certain industries have appeared. product. In addition, the application fields of inverters are also expanding, from factory production and processing equipment to central air-conditioning, from heavy machinery to light textile industry, from low power of...

AI Technical Summary

Problems solved by technology

[0004] At present, the structure of frequency conversion controller mainly adopts the form of DSP+CPLD or DSP+ARM. Although DSP has great advantages in data processing, its communication capability is poor, so the frequency converter using DSP+CPLD architecture often has poor communication functions. Poor, unable to adapt to the needs of diversified communication, if using DSP to expand various communication interfaces, it will inevitably reduce the computing power of DSP, and cannot meet the needs of complex control algorithms; although the frequency conversion controller using DSP+ARM architecture can have rich communication interfaces , but cannot achieve high-speed parallel data transmission between DSP+ARM, or cannot respond to external faults without delay like CPLD or FPGA, that is, the protection function is poor

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