Driving apparatus for reclosing apparatus and driving method thereof

Patent metadata

Field	Value
Publication number	US-11652345-B2
Application number	US-202117378044-A
Country	US
Kind code	B2
Filing date	Jul 16, 2021
Priority date	Jul 16, 2020
Publication date	May 16, 2023
Grant date	May 16, 2023

Abstract

The present disclosure relates to a driving apparatus for a reclosing apparatus and a driving method thereof. The driving apparatus comprises a first energy storage unit, a timing unit, a control unit, and a first power supply unit, a second energy storage unit and a driving unit. The timing unit outputs a first enable signal; the control unit outputs a second enable signal or a third enable signal; the first power supply unit enables the second energy storage unit to receive the power when receiving the second enable signal, and enables the second energy storage unit to discharge when receiving the third enable signal; the second energy storage unit receives and stores the power via the first power supply unit; and the driving unit provides the power stored in the first energy storage unit to the reclosing apparatus when a predetermined condition is satisfied.

First claim

What is claimed is:

1. A driving apparatus for a reclosing apparatus, the driving apparatus being supplied with power through direct current converted from alternating drive current of a motor by a rectifier apparatus, and the driving apparatus comprising a first energy storage unit, a timing unit, a control unit, a first power supply unit, a second energy storage unit, and a driving unit, wherein,
the first energy storage unit is configured to receive and store the power, and supply power to the timing unit and the reclosing apparatus;
the timing unit is configured to output a first enable signal after determining that a power-off time of the motor reaches a first time threshold based on a voltage of the first energy storage unit;
the control unit is configured to output a second enable signal based on a reclosing function being enabled, and output a third enable signal based on determining that the reclosing function is not enabled;
the first power supply unit is configured to enable the second energy storage unit to receive the power when receiving the second enable signal, and to enable the second energy storage unit to discharge when receiving the third enable signal;
the second energy storage unit is configured to receive and store the power via the first power supply unit; and
the driving unit is configured to provide the power stored in the first energy storage unit to the reclosing apparatus when a predetermined condition is satisfied, and the predetermined condition requires that the timing unit outputs the first enable signal and a voltage of the second energy storage unit reaches a first voltage threshold.

2. The driving apparatus of claim 1 , wherein the driving apparatus further comprises an enabling unit configured to output a fourth enable signal based on determining that the voltage of the first energy storage unit reaches a second voltage threshold, and
the first power supply unit enables the second energy storage unit to receive the power when receiving both the second enable signal and the fourth enable signal.

3. The driving apparatus of claim 2 , wherein the first power supply unit comprises a charging circuit and a discharging circuit, and the charging circuit is connected between an output terminal of the rectifier apparatus and the second energy storage unit, and the discharging circuit is connected between a reference ground and the second energy storage unit.

4. The driving apparatus of claim 3 , wherein,
the charging circuit comprises a first electronic switch and a logic AND circuit, the first electronic switch is connected between the output terminal of the rectifier apparatus and the second energy storage unit, and two input terminals of the logic AND circuit are respectively connected to a first output terminal of the control unit and an output terminal of the enabling unit, and an output terminal of the logic AND circuit is connected to a control terminal of the first electronic switch;
the discharging circuit comprises a second electronic switch, the second electronic switch is connected between the reference ground and the second energy storage unit, and a second output terminal of the control unit is connected to a control terminal of the second electronic switch.

5. The driving apparatus of claim 2 , wherein, the control unit outputs the second enable signal based on the reclosing function being enabled and receiving the fourth enable signal.

6. The driving apparatus of claim 2 , wherein the enabling unit comprises a second voltage comparison circuit, an input terminal of the second voltage comparison circuit is connected to the first energy storage unit to obtain its voltage, and an output terminal of the second voltage comparison circuit is connected to the first power supply unit.

7. The driving apparatus of claim 1 , wherein the predetermined condition also requires that the motor has been powered off.

8. The driving apparatus of claim 7 , wherein the driving unit comprises a third electronic switch, a fourth electronic switch, and a fifth electronic switch, wherein,
the third electronic switch is connected between the second energy storage unit and a control terminal of the fourth electronic switch, and a control terminal of the third electronic switch receives the first enable signal;
the fourth electronic switch is connected between the first energy storage unit and the reclosing apparatus; and
the fifth electronic switch is connected between the control terminal of the fourth electronic switch and a reference ground, and a control terminal of the fifth electronic switch is connected to a power input terminal of the control unit.

9. The driving apparatus of claim 1 , wherein the driving apparatus further comprises a second power supply unit connected between the rectifier apparatus and the first energy storage unit for receiving the power and increasing a voltage output to the first energy storage unit.

10. The driving apparatus of claim 9 , wherein the second power supply unit comprises a booster circuit.

11. The driving apparatus of claim 1 , wherein the first energy storage unit comprises a first capacitor.

12. The driving apparatus of claim 1 , wherein the timing unit comprises a first voltage comparison circuit, an input terminal of the first voltage comparison circuit is connected to the first energy storage unit to obtain its voltage, and an output terminal of the first voltage comparison circuit is connected to the driving unit.

13. The driving apparatus of claim 1 , wherein the control unit comprises a micro control unit (MCU).

14. The driving apparatus of claim 1 , wherein the second energy storage unit comprises a second capacitor.

15. The driving apparatus of claim 1 , wherein the driving unit comprises a third electronic switch and a fourth electronic switch, wherein,
the third electronic switch is connected between the second energy storage unit and a control terminal of the fourth electronic switch, and a control terminal of the third electronic switch receives the first enable signal; and
the fourth electronic switch is connected between the first energy storage unit and the reclosing apparatus.

16. A driving method applied to a driving apparatus for a reclosing apparatus, the driving apparatus being supplied with power through direct current converted from alternating drive current of a motor by a rectifier apparatus, and the driving apparatus comprises a first energy storage unit, a timing unit, a control unit, a first power supply unit, a second energy storage unit, and a driving unit, the driving method comprising:
receiving and storing the power by the first energy storage unit;
outputting a first enable signal, by the timing unit, after determining that a power-off time of the motor reaches a first time threshold based on a voltage of the first energy storage unit;
outputting a second enable signal based on a reclosing function being enabled, and outputting a third enable signal based on determining that the reclosing function is not enabled by the control unit;
enabling the second energy storage unit to receive the power by the first power supply unit when receiving the second enable signal, and enabling the second energy storage unit to discharge by the first power supply unit when receiving the third enable signal; and
providing, by the driving unit, the power stored in the first energy storage unit to the reclosing apparatus when a predetermined condition is satisfied, and the predetermined condition requiring that the timing unit outputs the first enable signal and a voltage of the second energy storage unit reaches

Assignees

• Schneider Electric Ind Sas

Inventors

• Zhao Haijun
• Shi Ying
• Chen Jiamin
• Dechamps Fabien
• Zhou Zhangji
• Sun Shuang
• Shuang Bing
• Shi Lei

Classifications

• H02H7/085

  against excessive load {(H02H6/00 takes precedence)} · CPC title

• H02H7/0833

  for electric motors with control arrangements · CPC title

• H02H1/06

  Arrangements for supplying operative power {(power supply arrangements in general G05F, H02M)} · CPC title

• H02J2207/50

  Charging of capacitors, supercapacitors, ultra-capacitors or double layer capacitors · CPC title

• H02H7/0856 Primary

  characterised by the protection measure taken · CPC title