Do somebody have experience with this one switch inverter?:
Here is a one switch inverter - but besides the one switch, it also has two parallel coupled reverse-blocking-switches closer to the output, that functions as active rectification - see the schematic at page 2:
A Synchronous Single Switch Inverter - Purdue School of:
Therefore, as the number of high frequency switching devices is decreased, the efficiency is increased. For instance, a 90% efficient [H-bridge] converter becomes 97.2% efficient. ... CONCLUSION A new power inverter circuit was introduced that required only one high frequency switching transistor. The inverter used a synchronizing structure to change the voltage polarity on demand. Therefore, real time generation of infinite voltage levels was realized. The state space equations demonstrated a forth order system. ..."
The inverter could be used for solar micro-inverters:
The inverter could also be used for:
- brushless motor
- step motor
The circuit is a "all-in-one". It could be used for (T1 and T2 refer to the iupui.edu article):
- Positive DC, DV. T1 is used for active rectification. T2 is not used.
- Negative DC, DV. T2 is used for active rectification. T1 is not used.
- Any curve shape can be amplified with a signal from a suitable signal generator. (retangular, saw tooth, triangular...) T1 is used for positive curve parts - and T2 is used for negative curve parts.
Could it be used for a Class D audio amplifier with the right control circuit? Low enough distortion?
The circuit bear resemblance with a reversed SEPIC:
Indiana University. (2012, October 17). New class of power inverter could mean cheaper, faster hybrid vehicles. ScienceDaily:
Active rectification (synchronous rectification):