PMSMの動力線への単相変圧器を用いた位置検出用電力重畳における回路方程式

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  • Circuit Equation in Power Superimposition for Position Sensor Using Single-Phase Transformer on PMSM Power Lines
  • PMSM ノ ドウリョクセン エ ノ タンソウ ヘンアツキ オ モチイタ イチ ケンシュツヨウ デンリョク チョウジョウ ニ オケル カイロ ホウテイシキ

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<p>Permanent magnet synchronous motors (PMSM) are very popular in the industrial market. Recently, robots are installed to compensate for the shortage of labor. Due to the increase in motors, the number of power lines and position sensor cable wiring are increased; this increase in complicated wiring is a problem. As a method to solve these problems, power superimposition technology in the power line of a PMSM is expected to reduce the distribution cables. In this paper, the power superposition technology method, and circuit equations of mounting transformers in power lines are presented and are then verified by experiment, simulation, and linear analysis. The circuit equation is proposed as a three-phase circuit equation, which is transformed into a dq-circuit equation by a transformation matrix. The characteristics of the electric angular frequency versus the dq-axis voltage demonstrated satisfactory results, with errors within 1% in linear analysis and simulation. The linear analysis and experiment are shown to be similar, although there are some errors. The validity of the circuit equations could be demonstrated by the verification results.</p>

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