The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 19, 2020
Filed:
Nov. 02, 2015
Mitsubishi Electric Corporation, Tokyo, JP;
Mitsubishi Electric Corporation, Tokyo, JP;
Abstract
A motor driving apparatus drives an electric blower including a single-phase PM motor. The motor driving apparatus includes: a single-phase inverter that applies an alternating-current voltage to the single-phase PM motor; a rotor position detecting unit that outputs, to an inverter control unit, a position detecting signal corresponding to a rotational position of a rotor of the single-phase PM motor; a motor current detecting unit that outputs, to the inverter control unit, a signal corresponding to a motor current flowing to the single-phase PM motor; and the inverter control unit that outputs a driving signal to corresponding switching elements of the single-phase inverter on the basis of the position detecting signal and the motor current. The single-phase inverter performs control to increase or decrease effective electric power supplied to the single-phase PM motor. The air blower changes an air volume by the increase or decrease in effective electric power.