Bremsvorrichtung für einen bürstenlosen Dreiphasenmotor und motorbetriebene Anwendnung damit

Details

Veröffentlichungs-Nr.

EP2665177

Aktenzeichen

EP13168209

Anmeldetag

17. Mai 2013

Veröffentlichung

9. Dezember 2020

Erteilung

9. Dezember 2020

Rechtsraum

EP

IPC

H02P6/24H02P3/22H02P3/06

Abstract

A braking apparatus (6, 7, 8, 12, 20, 30) for a three-phase brushless motor (2) according to one aspect of the present invention is provided in a motor-driven appliance (100), and includes a switching circuit (12) having six switching elements (Q1, Q2, Q3, Q4, Q5, Q6) and a brake control device (30). The brake control device (30) executes two-phase short-circuit control in braking control in which a braking force is generated in the motor (2). In the two-phase short-circuit control, an on/off state of each of the switching elements (Q1, Q2, Q3, Q4, Q5, Q6) is set in such a manner that two out of three conduction paths constituting one of a positive electrode side conduction path that connects three terminals (U, V, W) of the motor (2) and a positive electrode side of a direct current power source (4) and a negative electrode side conduction path that connects the three terminals (U, V, W) and a negative electrode side of the power source (4) are in a conducting state and other of the three conduction paths is in a non-conducting state.

Anmelder

Firma

Makita Corporation

Land

🇯🇵 Japan

Fachgebiete