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Patent Searching and Data


Title:
MOTOR DRIVE CIRCUIT
Document Type and Number:
Japanese Patent JP2019126242
Kind Code:
A
Abstract:
To facilitate detection of regenerative power generation, simplify regenerative power consumption control and suppress deterioration of a battery or prevent destruction of a circuit element constituting a DC power supply or a motor driver in use of the DC power supply.SOLUTION: A power supply line L includes a diode 2 in a power supply line L1 to raise a voltage of the power supply line L1 and bring between a source (S) and a drain (D) of a semiconductor switch 3 into conduction when regenerative electric power occurs. A regenerative electric power absorption section 5 includes a capacitor C1 and a resistor R1 to store regenerative electric power in the capacitor C1 once. When a regenerative state is corrected, a voltage of the power supply line L1 drops, and non-conduction is brought into between the source (S) and the drain (D) of the semiconductor switch 3. At this time, regenerative electric power is consumed at the resistor R1.SELECTED DRAWING: Figure 5

Inventors:
TAKAHASHI ATSUHIKO
Application Number:
JP2018094122A
Publication Date:
July 25, 2019
Filing Date:
April 24, 2018
Export Citation:
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Assignee:
PHOENIX KK
International Classes:
H02P3/18