Title:
INVERTER SYSTEM AND CONTROL METHOD THEREOF
Document Type and Number:
Japanese Patent JP2019126243
Kind Code:
A
Abstract:
To compensate for transient voltage variation having various frequency distributions, in an inverter system for driving a motor.SOLUTION: A voltage drop calculation section 6 divides a wire 2 into N concentric circular elements, i.e., elements 1, 2, ..., N from the outer boundary. On the basis of the length l and the radius rof the wire 2, the values of resistance R(n=1, ..., N) and the inductance L(n=2, ..., N) are calculated. On the basis of the resistance value Rand the inductance L, transfer function Z(s) of impedance of the wire is derived. On the basis of the output current detection value and the transfer function Z(s) of impedance of the wire, voltage drop is output. In a pulse width modulation section PWM, pulse width modulation control is executed based on an inverter voltage command value adding a motor drive voltage command value and the voltage drop, and a switching signal is output to each switching element of an inverter INV.SELECTED DRAWING: Figure 2
Inventors:
SARITA DAIKI
Application Number:
JP2018108238A
Publication Date:
July 25, 2019
Filing Date:
June 06, 2018
Export Citation:
Assignee:
MEIDENSHA ELECTRIC MFG CO LTD
International Classes:
H02M7/48
Attorney, Agent or Firm:
Hiromichi Kobayashi
Tomioka Kiyoshi
Uzawa Hidehisa
Tomoyuki Ota
Tomioka Kiyoshi
Uzawa Hidehisa
Tomoyuki Ota