Motor control apparatus
AssigneeMatsushita Electric Industrial Co., Ltd.
InventorsHideki Nakata, Mitsuo Ueda, Hideo Matsushiro, Masanori Ogawa, Mitsuo Kawaji, Tomohiro Sugimoto
Life of this patent
Estimating the term…
Abstract
In a motor control apparatus of the present invention, a control section which receives an input voltage to an inverter circuit, a motor current flowing to a brushless motor and a motor current command value indicating the value of a current required to flow to the inverter circuit, and controls the inverter circuit by maintaining a phase of the voltage applied to the brushless motor when the value of the input voltage to the inverter circuit is smaller than the value of a voltage required to be applied to the brushless motor.
Claims24
A motor control apparatus comprising:
- an inverter circuit which receives a fluctuating voltage, converts said voltage into a desired voltage and outputs said desired voltage to a brushless motor, and
- a control section which receives the input voltage to said inverter circuit, a motor current flowing to said brushless motor and a command value indicating the value of a current required to flow to said inverter circuit and generates sinusoidal voltage command values for controlling said inverter circuit, said control section maintaining the phase of the voltage applied to said brushless motor when the value of the input voltage to said inverter circuit is smaller than the value of a voltage required to be applied to said brushless motor.
Dependencies are inferred from the claim text.