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US 12,580,494 B2Granted
Inverter, method of controlling inverter, program of controlling inverter
AssigneeNabtesco Corporation
InventorsYasuo Ono, Michael Haider, Dominik Bortis, Johann W. Kolar
Life of this patent
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Abstract
An inverter includes: a high electric potential input terminal, a low electric potential input terminal, an output terminal that outputs AC power, a transistor pair, a driver that performs complementary switching control of the transistor pair. The driver includes a current adjustment element that adjusts the channel current and a voltage adjustment element that adjusts the channel voltage of the transistor pair, and adjusts, in the switching control of the transistor pair, the time change rate of the channel current to be larger than the time change rate of the channel voltage.
Claims8
An inverter comprising:
- an input terminal including a high electric potential input terminal with high electric potential and a low electric potential input terminal with low electric potential, wherein DC power is input between both input terminals;
- an output terminal that outputs AC power;
- a transistor pair comprising a high electric potential transistor having a current path connecting the high electric potential input terminal side and the output terminal side, and a low electric potential transistor having a current path connecting the low electric potential input terminal side and the output terminal side;
- and
- a driver that inputs a control signal to the respective high electric potential transistor and the low electric potential transistor to perform switching control to convert the DC power to the AC power by complementarily switching the conduction state of the respective current paths,
- wherein the driver includes at least one of a current adjustment element that adjusts the current of the respective current paths and a voltage adjustment element that adjusts the voltage of the respective current paths, and
- at least one of the current adjustment element and the voltage adjustment element adjusts, in the switching control, the time change rate of the current of the respective current paths to be larger than the time change rate of the voltage of the respective current paths, wherein
- the transistor pair, wherein n is an integer of 2 or more, includes first to nth transistor pairs configured by first to nth high electric potential transistors connected in series from the output terminal to the high electric potential input terminal, and first to nth low electric potential transistors connected in series from the output terminal to the low electric potential input terminal, and
- the driver includes first to nth drivers that perform the switching control for the first to nth transistor pairs,
- wherein the inverter comprises:
- first to n−1th connection paths that interconnect the high electric potential side connection portions and the low electric potential side connection portions of adjacent transistor pairs;
- and
- first to n−1th voltage fluctuation suppression elements provided in the respective connection paths to suppress the fluctuation of voltage between the high electric potential side connection portions and the low electric potential side connection portions,
- wherein the switching control of adjacent transistor pairs is performed with a predetermined time gap.
11 more elements
A method of controlling an inverter,
- wherein the inverter comprises:
- an input terminal including a high electric potential input terminal with high electric potential and a low electric potential input terminal with low electric potential, wherein DC power is input between both input terminals;
- an output terminal that outputs AC power;
- a transistor pair comprising a high electric potential transistor having a current path connecting the high electric potential input terminal side and the output terminal side, and a low electric potential transistor having a current path connecting the low electric potential input terminal side and the output terminal side,
- wherein the method comprises a switching control operation to input a control signal by a driver to the respective high electric potential transistor and the low electric potential transistor to convert the DC power to the AC power by complementarily switching the conduction state of the respective current paths,
- wherein the method adjusts, in the switching control, the time change rate of the current of the respective current paths to be larger than the time change rate of the voltage of the respective current paths,
- wherein the transistor pair, wherein n is an integer of 2 or more, includes first to nth transistor pairs configured by first to nth high electric potential transistors connected in series from the output terminal to the high electric potential input terminal, and first to nth low electric potential transistors connected in series from the output terminal to the low electric potential input terminal, and
- the driver includes first to nth drivers that perform the switching control for the first to nth transistor pairs,
- wherein the inverter comprises:
- first to n−1th connection paths that interconnect the high electric potential side connection portions and the low electric potential side connection portions of adjacent transistor pairs;
- and
- first to n−1th voltage fluctuation suppression elements provided in the respective connection paths to suppress the fluctuation of voltage between the high electric potential side connection portions and the low electric potential side connection portions,
- wherein the switching control of adjacent transistor pairs is performed with a predetermined time gap.
10 more elements
A program of controlling an inverter,
- wherein the inverter comprises:
- an input terminal including a high electric potential input terminal with high electric potential and a low electric potential input terminal with low electric potential, wherein DC power is input between both input terminals;
- an output terminal that outputs AC power;
- a transistor pair comprising a high electric potential transistor having a current path connecting the high electric potential input terminal side and the output terminal side, and a low electric potential transistor having a current path connecting the low electric potential input terminal side and the output terminal side,
- wherein the program causes a computer to perform a switching control operation to input a control signal by a driver to the respective high electric potential transistor and the low electric potential transistor to convert the DC power to the AC power by complementarily switching the conduction state of the respective current paths,
- wherein the program adjusts, in the switching control, the time change rate of the current of the respective current paths to be larger than the time change rate of the voltage of the respective current paths,
- wherein the transistor pair, wherein n is an integer of 2 or more, includes first to nth transistor pairs configured by first to nth high electric potential transistors connected in series from the output terminal to the high electric potential input terminal, and first to nth low electric potential transistors connected in series from the output terminal to the low electric potential input terminal, and
- the driver includes first to nth drivers that perform the switching control for the first to nth transistor pairs,
- wherein the inverter comprises:
- first to n−1th connection paths that interconnect the high electric potential side connection portions and the low electric potential side connection portions of adjacent transistor pairs;
- and
- first to n−1th voltage fluctuation suppression elements provided in the respective connection paths to suppress the fluctuation of voltage between the high electric potential side connection portions and the low electric potential side connection portions,
- wherein the switching control of adjacent transistor pairs is performed with a predetermined time gap.
10 more elements
Dependencies are inferred from the claim text.