A power electronic load system for simulating an open-winding permanent magnet synchronous motor

Abstract

The invention discloses a power electronic load system for simulating an open-winding permanent magnet synchronous motor. Including: motor simulation module, which simulates the port characteristics of open-winding permanent magnet synchronous motor; energy processing module, including energy consumption resistor and feeder inverter circuit, which can switch between two energy processing modes of energy consumption or feeder recovery; signal acquisition module , to collect information such as voltage and current parameters and grid voltage phase in the system; the control module uses DSP28335 as the main control chip to perform signal processing and related calculations and control the work of the entire system; the drive module is controlled by the control module to control the power in the system Electronics send drive signals. This system can simulate the port characteristics of the open-winding permanent magnet synchronous motor to test the double-inverter motor driver. The energy processing method is automatically switched to the most economical mode after the system collects the feed-in power in real time. The parameters of the open-winding motor simulated by this system are flexible and adjustable, with good economy, high reliability and convenient automatic operation.

Description

technical field [0001] The invention relates to the field of power electronic loads, in particular to a power electronic load system for simulating an open-winding permanent magnet synchronous motor. Background technique [0002] The power electronic load can simulate loads with various characteristics by controlling the on-off of power electronic devices, which makes up for the shortcomings of the traditional on-load discharge test of the power supply, such as the inability to flexibly adjust the load, poor versatility, and high cost. A virtual motor model is established in the controller to control the power electronic load so that it has the required motor port characteristics. Each motor controller must be connected to the motor for a large number of tests before it is put into production. However, once the actual motor leaves the factory, the body parameters are basically fixed. It is not easy to adjust; the mechanical load applied to the motor also depends on the compl...

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Problems solved by technology

In recent years, more and more scholars have carried out research on the design of open-winding permanent magnet synchronous motor controllers and related control strategies. However, the real machine inventory of open-winding permanent magnet synchronous motors is small, and most of them are high-power motors, which is not convenient Therefore, it is an effective way to solve the above problems to propose a power electronic load that can simulate the open-winding permanent magnet synchronous motor.

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