What is a 3 phase inverter?
The three-phase inverter is designed to operate from the DC bus voltage up to 1200 V. This design uses an IGBT module instead of discrete IGBTs. This reference design is intended to support various makes of IGBT modules so a commonly used footprint of IGBT module is selected.
What is a three-phase inverter module?
This module has a three-phase diode based rectifier input stage, a three-phase IGBT based inverter output stage, an IGBT based brake chopper and an NTC thermistor integrated inside the module. In this design the rectifier stage is unused and provision is given to power the three-phase inverter stage directly with a DC power supply.
How do high-end three-phase inverters work?
High-end three-phase inverters use ΣΔ modulators for current sensing, which also asks for using expensive controllers with built-in SINC filters. Using an isolated amplifier enables interfacing with low-cost M4 core MCU or TI’s Piccolo with a built-in SAR analog-to-digital converter (ADC).
Is tida-00366 a three-phase inverter?
The TIDA-00366 is designed for a three-phase inverter, but this section explains the circuits and components for one channel (U-Phase) only. The same explanation is applicable to other two channels (V-Phase and W-Phase). The current sensing is done using three shunts in-phase with the inverter outputs.
How does the inverter power stage work?
The inverter power stage has been designed to be protected against DC bus under- and overvoltage and IGBT module overtemperature. The DC-link voltage is sensed using a high-impedance voltage divider. The scaled voltage is directly connected to the ADC inside the controller.
What is the output current rating of tida-010025 inverter?
Figure 4. Three-Phase Inverter The TIDA-010025 inverter designed using the IGBT module has a nominal output current rating of 14 Arms. Note that in this design provision has been given for three-phase mains voltage rectification but is not tested. 200 to 480 VAC mains input is given to connectors J1 and J3.
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