ADJUSTMENT METHOD FOR INVERTER DEVICE, ADJUSTMENT DEVICE FOR INVERTER DEVICE, AND INVERTER DEVICE

• Main Authors: FUKUHARA HITOSHI, MIYAGAWA SATOSHI
• Format: Patent
• Language: English; Japanese
• Published: 28.03.2019
• Subjects: APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC,OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWERSUPPLY SYSTEMS; CONTROL OR REGULATION THEREOF; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUTPOWER; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRICITY; GENERATION

To provide a technique capable of adjusting a content of a dead time compensation function, of an inverter device, for adding a setting value to a voltage command value for leg in which a current equal to or greater than a current threshold flows, into an appropriate content in accordance with a use state of the inverter device.SOLUTION: In a state where a dead time compensation function of an inverter device is stopped, a frequency/current gain property in a case where a current command value is a sweep sign wave including DC offset of such an amount that positive and negative values are not switched, is measured and a frequency for setting value calculation to be used for calculating a setting value is identified based on the measured frequency/current gain property. An amplitude of an AC voltage to be applied to a load in electrifying an AC current whose frequency is the frequency for setting value calculation and whose amplitude is a current threshold is calculated by using resistance and inductance of the load of an inverter circuit, and set as a setting value of the dead time compensation function.SELECTED DRAWING: Figure 5 【課題】インバータ装置の、電流閾値以上の大きさの電流が流れ出ているレグ用の電圧指令値に設定値を加算するデッドタイム補償機能の内容を、インバータ装置の使用状況に応じて適切なものに調節できる技術を提供する。【解決手段】インバータ装置のデッドタイム補償機能を停止させた状態で、電流指令値が、正負が切り替わらない量のＤＣオフセットを含むスイープサイン波である場合の周波数・電流ゲイン特性を測定し、測定された周波数・電流ゲイン特性に基づき、設定値の算出に使用する設定値算出用周波数を特定し、インバータ回路の負荷の抵抗及びインダクタンスを用いて、周波数が設定値算出用周波数であり、且つ、振幅が電流閾値である交流電流の通電時に負荷に印加される交流電圧の振幅を算出して、デッドタイム補償機能の設定値として設定する。【選択図】図５