Abstract
This paper presents a bridgeless Cuk-derived single power conversion inverter with reduced number of power components, which has reactive-power capability. The secondary diode of the conventional unfolding-type Cuk inverter is integrated into one of the secondary-side switches in the bridgeless Cuk-derived configuration, which reduces the number of active-power components. A modulation technique is developed to provide a current path during reverse power flow; this technique enables operations under unity and nonunity power factors. A repetitive controller coupled with a linear feedback controller and a feed-forward controller are used to achieve accurate output current tracking under the harsh control environment. Driving the diode-integrated switch in synchronous rectification mode provides higher power conversion efficiency than that under diode-based secondary side rectification. Circuit operation and design guidelines of the bridgeless Cuk inverter are presented in detail. A 500-VA prototype inverter was fabricated to demonstrate the desirable performance of the bridgeless Cuk-derived inverter.
| Original language | English |
|---|---|
| Article number | 8758396 |
| Pages (from-to) | 2629-2645 |
| Number of pages | 17 |
| Journal | IEEE Transactions on Power Electronics |
| Volume | 35 |
| Issue number | 3 |
| DOIs | |
| State | Published - Mar 2020 |
Keywords
- Cuk topology
- modulation technique
- reactive-power injection
- reduced number of power components
- synchronous rectification (SR)