INVERTER DEVICE AND ELECTRIC VEHICLE

• Main Authors: ISOBE JUNKI, YASUJIMA TOSHIYUKI, TAMURA HIROSHI, TAKAOKA MIDORI, ASHIDA AKIHIRO
• Format: Patent
• Language: English; Japanese
• Published: 23.08.2018
• 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

PROBLEM TO BE SOLVED: To provide an inverter device that reduces an output voltage error of an inverter circuit and stably controls a motor to high speed rotation.SOLUTION: In a motor device 500, an inverter device 100 includes: a PWM controller 145 for generating a PWM pulse for converting a DC voltage DCV into an AC voltage on the basis of a motor output request; and an inverter circuit 110 for converting the DC voltage DCV into an AC voltage by the PWM pulse generated by the PWM controller 145 to drive a motor 300. When the PWM controller 145 performs trapezoidal wave modulation using a trapezoidal wave in an overmodulation region, a pulse width of the PWM pulse is changed at a predetermined timing on an upper side of the trapezoidal wave.SELECTED DRAWING: Figure 1 【課題】インバータ回路の出力電圧誤差を低減し、モータを高速回転まで安定して制御するインバータ装置を提供する。【解決手段】モータ装置５００において、インバータ装置１００は、モータ出力要求に基づいて、直流電圧ＤＣＶを交流電圧に変換するためのＰＷＭパルスを生成するＰＷＭ制御器１４５と、ＰＷＭ制御器１４５で生成されたＰＷＭパルスにより直流電圧ＤＣＶを交流電圧に変換してモータ３００を駆動するインバータ回路１１０とを備える。ＰＷＭ制御器１４５は、過変調領域において台形波を用いた台形波変調を行う際に、台形波の上辺における所定のタイミングでＰＷＭパルスのパルス幅を変化させる。【選択図】図１