This is a paper about AC induction motor drive. It proposes a new module called Integrated Power Stage, which can reduce the cost and complexity of power semiconductors. The module is used for a 1 to 2 hp AC motor drive.
The document explains the concept of an Integrated Power Stage (IPS) module that combines all power electronics needed for a low‑cost AC motor drive into a single package. It details the module’s internal sense resistor, temperature‑sense diode, and protection features, and provides ratings for various voltage and current configurations.
A demo board built around the IPS module is presented, showing the power circuitry, gate‑drive, status monitoring, and programmable logic. The note includes wiring diagrams, component values for low‑ and high‑voltage versions, safety guidelines for laboratory use, and instructions for PWM signal generation and PLD programming.
| Over‑current comparator trip current | 12.7 A |
|---|---|
| Temperature signal slope | 26.5 mV/°C |
| Voltage divider scaling | 1 V per 100 V DC bus |
| Integrated Power Stage sense resistor tolerance | 1 % |
An over‑current comparator monitors the sense resistor and trips when the current exceeds 12.7 A.
A dead time of at least 2 µs is recommended to avoid shoot‑through current and switching losses.