CN2548361Y - Switch transformer type medium-high voltage motor soft-starting and governing apparatus - Google Patents

Switch transformer type medium-high voltage motor soft-starting and governing apparatus Download PDF

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Publication number
CN2548361Y
CN2548361Y CN 01259830 CN01259830U CN2548361Y CN 2548361 Y CN2548361 Y CN 2548361Y CN 01259830 CN01259830 CN 01259830 CN 01259830 U CN01259830 U CN 01259830U CN 2548361 Y CN2548361 Y CN 2548361Y
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CN
China
Prior art keywords
transformer
motor
voltage
switch
soft start
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Expired - Lifetime
Application number
CN 01259830
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Chinese (zh)
Inventor
潘政刚
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Harbin Pattern Science & Technology Co., Ltd.
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潘政刚
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Priority to CN 01259830 priority Critical patent/CN2548361Y/en
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Abstract

A switch transformer type middle-high voltage motor soft starting and speed-regulating device is suitable for a squirrel-cage asynchronous motor, belonging to a motor stator voltage and speed adjusting category in a technology field of power electronics. The switch transformer type middle-high voltage motor soft starting and speed-regulating device realizes that a transformer original side is in an on or an off state by controlling whether a transformer sub-side is on or not. When the transformer original side is in the on state, the voltage of the original side is low, and the voltage of the motor end approximates a supply voltage. When the original side is off, most of the supply voltage is applied on the transformer original side, and the voltage of the motor end is very low. The on and off time comparison of the transformer sub-side is changed via a control circuit. Therefore the voltage of the motor end is changed. So that the goals of soft start and speed regulation are reached.

Description

Switching transformer type mesohigh motor soft start and speed regulating device
The utility model relates to a kind of mesohigh motor soft start and speed regulating device that are made of switch transformer, control circuit.
Soft start and stop of high-tension motor at present and speed regulating device still belong to blank at home, and external product costs an arm and a leg, and reliability also has problems.
Task of the present utility model provides a kind of high voltage that is used for, the soft start of large capacity motor and speed regulating device, and own loss is little, can steady in a long-term move.
The utility model is by switch transformer T 1, formation such as voltage sensor PT, current sensor CT and control circuit, as shown in Figure 1.The former limit winding and the motor in series of switch transformer, the secondary winding of switch transformer links to each other with control circuit, pay the time ratio of the shutoff and the conducting of limit winding by the control circuit control transformer, can change terminal voltage of motor, thereby reach the purpose of soft start and speed governing.
Fig. 2 is the circuit diagram of the utility model embodiment
Comprise a motor M in the described circuit diagram of Fig. 2 1, switch transformer T 1, forward controllable silicon S 1, reverse controllable silicon S 2, control module C, Programmable Logic Controller PLC voltage transformer pt, current transformer CT, given voltage PF.
Transformer (T 1) former limit winding and the mesohigh (motor (M of 1.0Kv-10.0Kv) 1) contacting is connected on the electrical network T 1The secondary winding be attempted by forward controllable silicon (S 1) and reverse controllable silicon (S 2) two ends.This has just constituted the main control loop of this device.As controllable silicon (S 1, S 2) when ending, transformer (T 1) be Light Condition.The supply voltage major part of this moment is added on the former limit winding of transformer (T1) motor (M 1) on terminal voltage very low, as controllable silicon (S 1, S 2) fully during conducting, transformer (T 1) be the secondary short circuit state.Transformer (T 1) voltage on the winding of former limit is very low.The supply voltage major part of this moment is added in motor (M 1) on.
Control module (SCR CONTROLLER) is regulated the time ratio of silicon controlled shutoff and conducting according to the order of Programmable Logic Controller (PLC) or order manually, makes motor (M 1) be in soft start, soft stopping or the speed governing operation operating mode.
Wherein, the feedback voltage (V that provides according to given voltage (PF) and PT of control module (SCR CONTROLLER) A, V B, V C), the feedback current (I that provides of CT A, I B, I C) constituting PID control, the assurance system is work reliably steadily.

Claims (2)

1, is used for high-tension motor soft start and speed regulating device by what switch transformer and motor in series, transformer were in that switch working state constitutes.
The former limit winding and the motor in series that it is characterized in that switch transformer, the secondary of switch transformer is controlled by control circuit, the control circuit control transformer turn-offs and the time ratio of conducting can change the terminal voltage of motor, thereby reaches the purpose of soft start and speed governing.
2, switching transformer type mesohigh motor soft start according to claim 1 and speed regulating device, it is characterized in that control circuit constitutes closed-loop path with oppositely controllable silicon is in parallel with transformer secondary winding by the forward controllable silicon, and be provided with Programmable Logic Controller PLC etc., constitute PID control according to given voltage and feedback voltage, feedback current.
CN 01259830 2001-08-22 2001-08-22 Switch transformer type medium-high voltage motor soft-starting and governing apparatus Expired - Lifetime CN2548361Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 01259830 CN2548361Y (en) 2001-08-22 2001-08-22 Switch transformer type medium-high voltage motor soft-starting and governing apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 01259830 CN2548361Y (en) 2001-08-22 2001-08-22 Switch transformer type medium-high voltage motor soft-starting and governing apparatus

Publications (1)

Publication Number Publication Date
CN2548361Y true CN2548361Y (en) 2003-04-30

Family

ID=33668122

Family Applications (1)

Application Number Title Priority Date Filing Date
CN 01259830 Expired - Lifetime CN2548361Y (en) 2001-08-22 2001-08-22 Switch transformer type medium-high voltage motor soft-starting and governing apparatus

Country Status (1)

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CN (1) CN2548361Y (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102097984A (en) * 2011-02-28 2011-06-15 高越农 Quasi-saturated reactor high-voltage electric motor soft start device
CN101304227B (en) * 2008-03-24 2012-04-25 苏绵朋 Armoured flame-proof type switch transformer type flexible starting equipment

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101304227B (en) * 2008-03-24 2012-04-25 苏绵朋 Armoured flame-proof type switch transformer type flexible starting equipment
CN102097984A (en) * 2011-02-28 2011-06-15 高越农 Quasi-saturated reactor high-voltage electric motor soft start device
CN102097984B (en) * 2011-02-28 2013-11-06 大禹电气科技股份有限公司 Quasi-saturated reactor high-voltage electric motor soft start device

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Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
ASS Succession or assignment of patent right

Owner name: PATEER TECHNOLOGY CO., LTD, HARBIN

Free format text: FORMER OWNER: PAN ZHENGGANG

Effective date: 20061124

C41 Transfer of patent application or patent right or utility model
TR01 Transfer of patent right

Effective date of registration: 20061124

Address after: 150090 Building 8, Xiangjiang Road, Harbin Development Zone, Heilongjiang, China

Patentee after: Harbin Pattern Science & Technology Co., Ltd.

Address before: 150090 Building 8, Xiangjiang Road, Harbin Development Zone, Heilongjiang, China

Patentee before: Pan Zhenggang

C57 Notification of unclear or unknown address
DD01 Delivery of document by public notice

Addressee: Harbin Pattern Science & Technology Co., Ltd.

Document name: Decision of the request for invalidation

C17 Cessation of patent right
CX01 Expiry of patent term

Expiration termination date: 20110822

Granted publication date: 20030430