POWER CONVERSION DEVICE
To provide a power conversion device capable of improving the lifetime of the entire device by leveling damage to a switching element and a diode constituting an inverter circuit.SOLUTION: A power conversion device comprises: a converter circuit which outputs a DC primary-side voltage; a converter c...
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Main Authors | , , , |
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Format | Patent |
Language | English Japanese |
Published |
22.03.2024
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Subjects | |
Online Access | Get full text |
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Summary: | To provide a power conversion device capable of improving the lifetime of the entire device by leveling damage to a switching element and a diode constituting an inverter circuit.SOLUTION: A power conversion device comprises: a converter circuit which outputs a DC primary-side voltage; a converter controller which controls the converter circuit; an inverter circuit which includes a power switching device and a diode and converts the primary-side voltage into a predetermined AC voltage; and an inverter control section which controls the inverter circuit. The inverter control section calculates damage to the power switching device and the diode and operates a DC voltage command so as to level the damage to the power switching device and the diode, and the converter control section transmits a drive signal to the converter circuit so as to reduce a difference between the DC voltage command and the primary-side voltage.SELECTED DRAWING: Figure 1
【課題】インバータ回路を構成するスイッチング素子とダイオードの損傷を平準化でき、装置全体の寿命を向上できる電力変換装置を提供する。【解決手段】直流の一次側電圧を出力するコンバータ回路と、コンバータ回路を制御するコンバータ制御器と、パワースイッチングデバイスとダイオードを有し一次側電圧を所定の交流電圧に変換するインバータ回路と、インバータ回路を制御するインバータ制御部を有する電力変換装置であって、インバータ制御部は、パワースイッチングデバイスとダイオードの損傷を算出し、パワースイッチングデバイスとダイオードの損傷が平準化するように直流電圧指令を演算し、コンバータ制御部は、直流電圧指令と一次側電圧との差が小さくなるようにコンバータ回路に駆動信号を送信する。【選択図】図1 |
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Bibliography: | Application Number: JP20220144204 |