heric inverter (1-phase application)
description
heric (highly efficient and reliable inverter concept) is a well-known topology for photovoltaic systems. this is a configuration in which two anti-parallel auxiliary switches are added to the conventional h-bridge inverter. these switches can pass freewheel current through the shortest route during the period when the output voltage of the h-bridge inverter is zero, and can improve loss and noise.
overview
- six switches conform this topology, in which the four on the h bridge switch at high frequency, and the two external ones switch at grid frequency.
- lower cost sj-mosfet
- lower loss sic mosfet, igbt
- smaller package choises from 3-leads, 4-leads or 7-leads,
circuit
key products
| product category | product family | product number | feature |
|---|---|---|---|
| switch | 650v igbt | rgwxxtx65 series | trench-gate and thin-wafer technologies are utilized to achieve low vce(sat) reducing switching loss. |
| 600v sj mosfet | 600 to 800v power mosfets using superjunction technlogy, prestomostm series enable high speed switching and low on-resistance performance. variaous choice of package are availble. | ||
| 750v sic mosfet | sct4xxxdx series | the latest sic mosfet device. enhanced low on-resistance enable best in class performance. it supports 750 v withstand voltage, ensuring a higher operating margin than conventional products, and can be used safely. | |
| 650v sic mosfet | sct3xxxax series | trench-gate sic mosfet with low on-resistance (50% reduction) compared to conventional products. | |
| gate driver | galvanic isolated gate driver | bm61x4xrfv | 1ch configuration, 3,750vrms isolated type gate driver, can be used for switching devices with current source pins. |
simulation
comming soon
related topologies
full bridge inverter (1-phase application)
3-level npc type-i inverter (3-phase application)
