Half Bridge Inverter Units and Inverter Thereof
OwnerHongliang Wang, Yan-Fei Liuinventors
Life of this patent
Estimating the term…
Abstract
Disclosed are half bridge inverter unit and inverter thereof. The half bridge inverter unit includes an inverter controlling module and inductors. The inverter controlling module provides different connection modes based on different operation modes so that the inverter meets the requirement of wide input voltage range as it can work in either voltage step-up mode or voltage step-down mode. The mid-point voltage between the DC series capacitors connected in parallel with DC power supply can be balanced automatically by taking advantage of the grid voltage symmetry with regard to positive and negative half cycles. The inverter is of single stage structure. It has advantages of low power loss, low cost, high efficiency and reliability.
Claims25
A half bridge inverter unit, comprising an inverter controlling module and a first inductor, has a first input terminal, a second input terminal, a third input terminal, a first voltage output terminal, a second voltage output terminal and several controlling terminals;
- wherein the inverter controlling module is connected to all the three input terminals, the two voltage output terminals, two terminals of the first inductor and the several controlling terminals;
- based on the controlling signals from the controlling terminals under a first operation mode, the inverter controlling module makes current flow between a first terminal of the first inductor and the first input terminal and between a second terminal of the first inductor and the first voltage output terminal;
- based on the controlling signals from the controlling terminals under a second operation mode, the inverter controlling module makes current flow between the first terminal of the first inductor and the second input terminal and between the second terminal of the first inductor and the first voltage output terminal;
- based on the controlling signals from the controlling terminals under a third operation mode, the inverter controlling module makes current flow between the first terminal of the first inductor and the first input terminal and between the second terminal of the first inductor and the second voltage output terminal;
- based on the controlling signals from the controlling terminals under a fourth operation mode, the inverter controlling module makes current flow between the first terminal of the first inductor and the second input terminal and between the second terminal of the first inductor and the second voltage output terminal.
Dependencies are inferred from the claim text.