After a failure, I became conservative. After making all the links safe, I finally drove the motor~~~
First, I considered several possible reasons why the resistor may have burned out:
1. Device aging;
2. The capacitor charging current is large and the NTC is not well protected;
3. When the main circuit is powered on, the control chip also works at the same time, starting the PFC program. The boost voltage increases the current in a short time and burns the resistor;
According to the information on the webpage, the firmware of the control board chip needs to be updated, and some parameters are also different from those of the EVAL-M3-TS6-665PN development board and need to be modified.
Therefore, first ensure the firmware upgrade and configuration parameters. The 30-pin interface cannot be fully connected, first connect the 3.3V power supply to the control board:
There are three circuits for 3.3V power: 2-6, 4-8, 22-24. The two circuits of 2-6 and 4-8 are short-circuited, so I connected the four wires of 4-6 and 22-24. Supply 220V power to the power board, connect the control board to the USB cable, and successfully connect to the control chip.
First configure the parameters in the MCEWizard software. By default, the software matches the EVAL-M3-102T power board with the EVAL-M3-CM615PN power board. You need to find the differences and modify them according to the parameters of the EVAL-M3-TS6-665PN.
There are many options to click on. The motor parameters need to be configured according to the actual drive motor, so I won’t go into details.
Here are some special parameters:
DC bus sampling resistor: 13.3k ohms, although it is the default and does not need to be changed, it is marked separately in the manual
The PFC voltage divider resistor RS4 of EVAL-M3-TS6-665PN written in the manual is 100MΩ. But for the control board EVAL-M3-102T, the current input value is the product of the voltage divider resistor (unit: milliohm) and the gain of the external current sensing amplifier.
Last time it was the resistor of RS4 that burned out, so I paid special attention to this parameter, which is different from the default.
The manual states: The current input of the MADK combination of EVAL-M3-102T and EVAL-M3-TS6-665PN is 92.3 mV/A, so modify the default value here.
AC voltage sampling resistor: 15k ohms, although it is the default and does not need to be changed, it is marked separately in the manual
Click the MCEWizard software until the end to form a .txt configuration file, but this is not the end. The firmware also needs to be generated manually (I didn’t know this at the beginning, so I ignored this step and used the official firmware, but it couldn’t match at all, and I took a lot of detours)
On this page, you need to combine the parameter configuration .txt file and the official firmware to generate your own firmware .ldf file:
With the parameter configuration .txt file and your own firmware .ldf file, the MCEWizard software is no longer needed.
Open the MCEDesigner software and start updating the firmware.
When I opened it, the following display appeared: (At first I didn’t know I had to generate the firmware myself. I thought the software version was wrong. I changed several software versions and the official firmware library, but the same prompt still appeared. It just didn’t match. I was a little frustrated...)
Follow the manual and update the parameters first:
Open MCEDesigner, click the "File" menu and select "Open" in the drop-down list to open the MCEDesigner default configuration file (.irc) for the IMC102T device (imc102t_xx.irc).
Import the system drive parameter file into MCEDesigner by clicking File > Import Drive Parameters. Select the Update All radio button.
However, without updating the firmware, no operation can be performed even if the parameters are modified.
The operation for updating the firmware in the manual is:
To program the system drive parameters into the IMC102T-F064, click the "Tools" menu and select "Programmer" in the drop-down list. A window "Program IMC Controller" pops up. Click "Program Parameters" and select the drive system parameter file created with mcewizard by clicking "Browse". Finally, click the "Start" button to program the parameter file into the IMC102T-F064 IC.
But what I opened was the following interface, where is the tools menu... (I doubt the software version again... and it takes a while...)
It turns out that the software interface is divided into 3 small windows: system monitoring window, PFC window and motor window. Clicking on different windows will display different menus... The Tools menu is displayed in the system monitoring window... (I have stepped into this pit for everyone...)
Fill in the previously generated parameter configuration .txt file and your own firmware .ldf file into the following figure:
Firmware updated successfully! ! ! !
Now you can run the program and see the waveforms of various parameters from the monitoring interface. The following is PFC:
Connect the control board, power board, motor, and power supply:
Click "Start" in the mcedesigner software, the PFC and motor driver will run at the same time, and the motor will start to rotate! ! ! !
The EVAL-M3-TS6-665PN development board successfully drives a 310VDC permanent magnet motor. No programming or algorithm writing is required. The motor drive can be completed by simply configuring and controlling the hardware. This is my favorite style of Infineon! Let's have a good start first~
Of course, Infineon also supports script files to write control codes yourself.
A further step is to fully understand the driving characteristics and IGBT performance and implement them all by yourself.
so to be continued........
This content is originally created by EEWORLD forum user landeng1986 . If you want to reprint or use it for commercial purposes, you must obtain the author's consent and indicate the source
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