| Title |
Inverter Losses Reduction for Rectangular Drive BLDCM using Synchronous Rectification |
| Authors |
Myung-Joon Nam ; Hag-Wone Kim ; Kwan-Yuhl Cho |
| DOI |
10.6113/TKPE/2016.21.2.117 |
| Keywords |
BLDCM; Synchronous rectification; Unified PWM; Losses analysis |
| Abstract |
In this paper, the inverter switch losses of BLDC motor for three types of PWM methods and power devices were analyzed. When the BLDC motor is driven at low currents, the inverter switch losses for MOSFET are low because MOSFET operates like resistance. However, the inverter switch losses for IGBT are higher than MOSFET due to its large turn-off losses. Moreover, synchronous rectification switching method is adaptable because MOSFET has 2-channel. So, MOSFET can be driven with more low impedance and losses. For low power inverter with MOSFET, the power losses of unified PWM are lower than that of unipolar and bipolar PWM. Proposed method and losses analysis results are verified by examination and simulation using Matlab/Simulink. |