Motor Simulator Using Power Converter for Dynamic Response
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Solution Overview
Problem
Conventional motor simulation systems require high-capacity motors and multiple testing mechanisms for various electric motors, leading to high costs and the need for online calibration, making them inefficient and costly for testing different types of motors.
Innovation Solution
A motor simulator architecture that substitutes a motor with an electric power converter, using an analog/digital converter, dynamic calculator, and digital/analog converter to simulate motor characteristics and recycle energy, allowing for the testing of various motor types without actual motor hardware, thereby reducing costs and improving versatility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a motor coupled to a generator set is used for motor simulation, then the dynamic response of the actual system can be simulated, but the capacity of the motor must be much greater than the testing motor (at least three times), leading to high cost
Solution Approach 1:
The patent creates a mathematical model that copies the electrical characteristics of the motor under test. The simulator generates equivalent voltage and current waveforms through software algorithms rather than physical motor emulation, eliminating the need for oversized hardware while maintaining accurate dynamic response simulation
Solution Approach 2:
The system dynamically adjusts electrical parameters (voltage, current, frequency, phase angle) through software control to simulate different motor operating conditions. This allows a single compact device to emulate multiple motor types and loading conditions by changing control parameters rather than physical configuration
2Adaptability or versatility
If different testing mechanisms are used for various electric motors, then different types of electric motors can be tested, but the cost increases
Solution Approach 1:
The simulator is designed as a universal testing platform that can accommodate different motor types through software configuration rather than hardware changes. The system identifies the motor type and automatically adjusts simulation parameters, enabling a single device to test various electric motor types without requiring separate testing mechanisms for each motor category
Solution Approach 2:
The system dynamically adapts its behavior based on the motor being tested. The control algorithm adjusts simulation characteristics in real-time according to the specific motor's electrical parameters, allowing the same hardware to seamlessly transition between testing different motor types through dynamic parameter adjustment
3Reliability
If online calibrations or adjustments are performed for untested electric motors, then good performance can be achieved, but the process becomes time-consuming and complex
Solution Approach 1:
The system performs automatic parameter identification and calibration routines immediately upon motor connection, using embedded algorithms to quickly characterize the motor's electrical properties. This preliminary automated characterization eliminates the need for manual calibration procedures, achieving accurate performance with minimal setup time
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables cost-effective and versatile motor simulation by generating actual motor-like voltage and current without the need for physical motors, reducing hardware costs and simplifying the testing process for different electric motor types.
Implementation Method 1
uses a motor simulation method to substitute a motor coupled to a generator set, and employs an electric power converter to simulate the voltage and current outputted from a testing motor
Implementation Method 2
The analog/digital converter is provided for converting an analog power signal into a digital control signal
Implementation Method 3
The digital/analog converter is provided for converting a digital control signal into an analog power signal
Data Source
AI summary
A motor simulator without requiring a motor is a testing motor controller used for inputting a driving signal according to a power supply driving signal, feeding back a status response of a dynamic calculator of the motor simulator, outputting a voltage and current reference command value required by the motor simulator to the motor simulator, so that the dynamic calculator and the electric power converter installed in the motor simulator generate a voltage and a current of an actual motor in an operating status. Therefore, the testing motor controller keeps converting and adjusting the electric energy for driving an operation of the motor simulator according to a status response fed back by the dynamic calculator of the motor simulator, so as to achieve a control function of the testing motor controller for testing the rotation speed and positioning of the motor.