MOTOR CONTROLLER, POWER CONVERSION EQUIPMENT, AUXILIARY POWER SUPPLY, AND AUXILIARY POWER SUPPLY CONTROL METHOD

• Main Authors: SAWAMURA MITSUJIRO, WADA TATSUAKI, KAWAHARA SHOTA
• Format: Patent
• Language: English; Japanese
• Published: 06.06.2019
• 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 OF ELECTRIC MOTORS, ELECTRIC GENERATORSOR DYNAMO-ELECTRIC CONVERTERS; CONTROL OR REGULATION THEREOF; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUTPOWER; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRICITY; GENERATION

To improve auxiliary power supply function of direct-current power by a simple control structure.SOLUTION: In a motor controller 1 having a converter 5 for converting AC power from an AC power supply 2 into DC power and supplying to a DC bus 13, an auxiliary power supply 8 performing charge and discharge of DC power for a DC bus 13, and a load inverter 7 for controlling supply power to a load motor 3 by using DC power of the DC bus 13, the auxiliary power supply 8 has a power supply motor 22, a flywheel 23 connected with the power supply motor 22, a power supply inverter 21 performing DC power supply from the DC bus 13 to the power supply motor 22 and regeneration, and a control section 24 for controlling the power supply inverter 21 so that the rotation angular speed ω of a flywheel 23 and the line-to-line voltage Vof the DC bus 13 maintain positive correlation relationship.SELECTED DRAWING: Figure 2 【課題】簡易な制御構成で直流電力の補助給電機能を向上する。【解決手段】交流電源２からの交流電力を直流電力に変換して直流母線１３に給電するコンバータ５と、直流母線１３に対して直流電力の充電と放電を行う補助電源部８と、直流母線１３の直流電力を用いた負荷モータ３への給電電力を制御する負荷インバータ７と、を有するモータ制御装置１であって、補助電源部８は、電源モータ２２と、電源モータ２２に結合されたフライホイール２３と、直流母線１３の直流電力から電源モータ２２への給電と回生を行う電源インバータ２１と、フライホイール２３の回転角速度ωと直流母線１３の母線間電圧Ｖ１が正の相関関係を維持するよう電源インバータ２１を制御する制御部２４と、を有する。【選択図】図２