Abstract
The thermal characteristics of power driver are developed for miniaturized brushless electromechanical actuator(EMA), which aims at solving its thermal cumulate problems caused by large current and high power density. On the basis of the semi-bridge modulation mode of H_PWM_L_ON, the power dissipation of three-phase bridge inverter circuit is analyzed; the thermal conduction model is built with the method of RC thermal network. The simulation and experiment results of Infineon IGBT-modules FS50R06W1E3 indicate that the conclusion of power dissipation is accurate and the thermal conduction model can compute the operating temperature of power device. The method can be used to evaluate the power driver of brushless EMA for estimating the operating temperature; this can avoid the temperature's exceeding the maximum junction temperature while improving effective output power.
| Original language | English |
|---|---|
| Pages (from-to) | 153-158 |
| Number of pages | 6 |
| Journal | Xibei Gongye Daxue Xuebao/Journal of Northwestern Polytechnical University |
| Volume | 34 |
| Issue number | 1 |
| State | Published - Feb 2016 |
Keywords
- Actuators
- Brushless DC motor
- Brushless EMA
- Computer simulation
- Effective output power
- Efficiency
- Electric currents
- Electric inverters
- Energy dissipation
- Estimation
- Experiments
- Heat conduction
- Heat sinks
- High power density
- H_PWM_L_ON
- Insulated gate bipolar transistors(IGBT)
- Power dissipation
- Pulse width modulation
- RC thermal network
- Reliability
- Switching frequency
- Temperature
- Thermal characteristics
- Thermal conduction model
- Three-phase bridge
- Waveform analysis