Tool/software: Code Composer Studio
Hi ,
We are working on generator control with the development kit TMDSHVMTRINSPIN as a prototype for my generator control project.
By modifying the code in lab04, we are using INSTASPIN-FOC to make Iq negative proportional to the speed, so the system can work in generator mode.
The current into my rectifier and the generator's air-gap voltage need to be in phase to ensure maximum power from generator.
However, the amplitude of the current is correct but the output power is less than what we expected.
We think that maybe the phase of the current controlled by the estimated angle is not aligned with actual phase of air-gap voltage inside the generator.
So our questions are:
1. Can the FAST estimator run in generator mode?
2. Are there ways to improve the accuracy of estimated angle?
The converter's output is connected to a 110V battery source to maintain the DCbus voltage, and the generator air-gap voltage (line-line) is less than 90V.
The generator is running at 66.67Hz. The current loop is tuned at 500Hz bandwidth with pole-zero cancellation. The controlled current Iq is around 2A level.
PWM is 15kHz. The offset, Rs, Ls, and flux are calibrated before test.
Thank you!
Benny
