μInverter

The μInverter (micro-inverter) board is an accessory for the AMDC. The purpose of this board is to serve as a low-cost, micro-level prototype board to demonstrate three-phase current regulation using the AMDC. It uses a 12V DC supply to drive a three phase RL load circuit to emulate a motor.


../../_images/uInverter3D.jpg

Features

  • Three phase AC current and DC bus voltage sensing feedback to AMDC.

  • Test points to measure voltages at various locations in the supply as well as load circuits.

  • BNC connector to directly measure the current waveforms on an oscilloscope conveniently.

Specifications

Metric

Symbol

Value

Switching Device

IXYS IXDN614YI

Current Sensing

Shunt + TI INA143

DC Capacitance

\(C_\text{dc}\)

1000 μF

DC Voltage

\(V_\text{dc}\)

5 to 35 V

Phase Current(rms)

\(I_\text{ph}\)

0 to 4 A

Switching Frequency

\(F_\text{sw}\)

0 to 1 MHz

Effective Load Parameters

\(R\), \(L\)

650 mΩ, 120 μH

  • The phase current and switching frequency are limited by the switching device thermal dissipation.

  • The resistance \(R\) is given at \(V_\text{dc} = 12~\text{V}\).