JPS558249A - Free wheeling circuit - Google Patents

Free wheeling circuit

Info

Publication number
JPS558249A
JPS558249A JP8034678A JP8034678A JPS558249A JP S558249 A JPS558249 A JP S558249A JP 8034678 A JP8034678 A JP 8034678A JP 8034678 A JP8034678 A JP 8034678A JP S558249 A JPS558249 A JP S558249A
Authority
JP
Japan
Prior art keywords
free wheeling
diode
current
wheeling diode
motor
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP8034678A
Other languages
Japanese (ja)
Inventor
Michiharu Ishido
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP8034678A priority Critical patent/JPS558249A/en
Publication of JPS558249A publication Critical patent/JPS558249A/en
Pending legal-status Critical Current

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  • Dc-Dc Converters (AREA)
  • Inverter Devices (AREA)

Abstract

PURPOSE: To restrict the reverse recovery current flowing through a free wheeling diode by providing a saturable reactor in series with the free wheeling diode connected in parallel with an inductive load such as chopper or the like.
CONSTITUTION: When an electric current is supplied from a DC power supply 1 through a chopper circuit 2 to a motor 3, a series circuit of a free wheeling diode 4 and a saturable reactor 5 is connected in parallel with the motor 3. Since a motor current is flown through the diode 4 to restrict the reverse recovery current flowing through the diode 4 from the time the current becomes zero by the operation of the reactor 5 due to this reason, it does not necessitate to use the free wheeling diode of special specification nor increase the current when the circuit 2 is energized. Accordingly, it can reduce the size of the thyristor and transistors used therefor.
COPYRIGHT: (C)1980,JPO&Japio
JP8034678A 1978-06-30 1978-06-30 Free wheeling circuit Pending JPS558249A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8034678A JPS558249A (en) 1978-06-30 1978-06-30 Free wheeling circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8034678A JPS558249A (en) 1978-06-30 1978-06-30 Free wheeling circuit

Publications (1)

Publication Number Publication Date
JPS558249A true JPS558249A (en) 1980-01-21

Family

ID=13715685

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8034678A Pending JPS558249A (en) 1978-06-30 1978-06-30 Free wheeling circuit

Country Status (1)

Country Link
JP (1) JPS558249A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108900083A (en) * 2018-06-05 2018-11-27 华为技术有限公司 power converter and related system
FR3086467A1 (en) * 2018-09-25 2020-03-27 Valeo Systemes Thermiques ELECTROMAGNETIC FILTERING OF AN ELECTRIC MOTOR CONTROL CIRCUIT

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108900083A (en) * 2018-06-05 2018-11-27 华为技术有限公司 power converter and related system
US11437904B2 (en) 2018-06-05 2022-09-06 Huawei Digital Power Technologies Co., Ltd. Power converter and related system
US11784552B2 (en) 2018-06-05 2023-10-10 Huawei Digital Power Technologies Co., Ltd. Power converter and related system
FR3086467A1 (en) * 2018-09-25 2020-03-27 Valeo Systemes Thermiques ELECTROMAGNETIC FILTERING OF AN ELECTRIC MOTOR CONTROL CIRCUIT
WO2020065216A1 (en) * 2018-09-25 2020-04-02 Valeo Systemes Thermiques Electromagnetic filtering for a circuit for controlling an electric motor

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