POWER CONVERSION APPARATUS

• Main Authors: KOGA TAKESHI, ONO TATSUYA, MATSUO KAZUYA, MIYAMAE AKIRA, HAMAMATSU MASANORI
• Format: Patent
• Language: English; Japanese
• Published: 10.08.2017
• 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

PROBLEM TO BE SOLVED: To provide a power conversion apparatus suited to stabilization of voltage and frequency of an AC power supply system.SOLUTION: A power conversion apparatus 1 connected between an AC power supply system 2 and a rotary machine 3 in N phase and includes: N DC parts 11x, 11y, 11z provided in correspondence with each of N phases of the rotary machine 3 and composed of one or more capacitors or the like; a rotary machine side power converter 12 which is connected between the DC parts 11x, 11y, 11z and the rotary machine 3 and converts DC power and AC power mutually; a rotary machine side controller 13 controlling the power converter 12; converters 14x, 14y, 14z which is connected between the DC parts 11x, 11y, 11z and the AC power supply system 2 and converts the DC power and the AC power mutually; and a system side controller 15 controlling the converters 14x, 14y, 14z. The rotary machine side controller 13 controls the rotary machine side power converter 12 so that a voltage representative value of the DC parts 11x, 11y, 11z becomes prescribed value.SELECTED DRAWING: Figure 1 【課題】 交流電源系統の電圧及び周波数の安定化を図るのに適した電力変換装置を提供する。【解決手段】 交流電源系統２と、Ｎ相の回転機３との間に接続された電力変換装置１であって、回転機３のＮ相の各々に対応して設けられ、１つまたは複数のキャパシタ等で構成されるＮ個の直流部１１ｘ、１１ｙ、１１ｚと、直流部１１ｘ、１１ｙ、１１ｚと回転機３との間に接続されて直流電力と交流電力とを互いに変換する回転機側電力変換器１２と、この電力変換器１２を制御する回転機側制御器１３と、直流部１１ｘ、１１ｙ、１１ｚと交流電源系統２との間に接続されて直流電力と交流電力とを互いに変換するコンバータ１４ｘ、１４ｙ、１４ｚと、コンバータ１４ｘ、１４ｙ、１４ｚを制御する系統側制御器１５とを備え、回転機側制御器１３は、直流部１１ｘ、１１ｙ、１１ｚの電圧の代表値が所定の値となるように回転機側電力変換器１２を制御するよう構成されている。【選択図】 図１