CN203658897U

CN203658897U - Contactless chopped voltage adjusting circuit

Info

Publication number: CN203658897U
Application number: CN201420016700.5U
Authority: CN
Inventors: 周熙文; 刘兵; 高青青
Original assignee: SAKO POWER TECHNOLOGY Corp
Current assignee: SAKO POWER TECHNOLOGY Corp
Priority date: 2014-01-09
Filing date: 2014-01-09
Publication date: 2014-06-18
Anticipated expiration: 2024-01-09

Abstract

A contactless chopped voltage adjusting circuit comprises a compensation transformer T1, four insulated gate bipolar transistors (IGBTs), four silicon controlled rectifiers, a capacitor and an inductor. An input voltage live wire is connected with one end of the secondary side of the compensation transformer T1, the other end of the secondary side of the compensation transformer T1 is connected with a collector of an IGBT1 and connected with a stabilizing output terminal, the IGBT1 is connected with an IGBT2 in series, a collector of the IGBT2 is connected with the inductor L1 and a collector of an IGBT4, the other end of the inductor L1 is connected with one end of the capacitor C1, one end of a silicon controlled rectifier VS2 and one end of a silicon controlled rectifier VS4, the silicon controlled rectifier VS2 and a silicon controlled rectifier VS1 are connected in series, the silicon controlled rectifier VS4 and a silicon controlled rectifier VS3 are connected in series, middle points of two series connection circuits are connected with two ends of the primary side of the compensation transformer T1, the other ends of the silicon controlled rectifier VS1 and the silicon controlled rectifier VS3 are connected with a zero wire, the other end of the capacitor C1 is connected with the zero wire, an emitter of the IGBT4 is connected with an emitter of an IGBT3, and a collector of the IGBT3 is connected with the zero wire.

Description

Contactless chopped mode regulating circuit

Technical field

The utility model relates to a kind of regulating circuit, refers in particular to a kind of circuit that utilizes contactless wave chopping technology regulation output voltage.

Background technology

The most common voltage regulating mode has mainly adopted contact in the market, and be more common employing manual voltage regulation, as carbon brush rotates and adjusts output voltage size on pressure regulator surface, these have the voltage regulating mode of contact to have certain mechanical wear, there is higher failure rate of machinery, therefore need periodic maintenance.And this voltage regulating mode reaction velocity is slow, cannot realize moment pressure regulation output.When some special occasions need in the situation of regulation voltage size, as test a certain consumer input voltage adaptive time, particularly will create the situation of moment mutation voltage time, current existing conventional voltage adjusting device cannot reach requirement substantially.

Summary of the invention

The purpose of this utility model is to provide a kind of contactless chopped mode regulating circuit.

For achieving the above object, the utility model is achieved by the following technical solution: contactless chopped mode regulating circuit comprises 1 compensator transformer T1, 4 IGBT, 4 controllable silicons, 1 electric capacity and 1 inductance, input voltage live wire connects one end of compensator transformer T1 secondary, the collector of another termination IGBT1 of compensator transformer T1 secondary, and connect pressure regulation lead-out terminal, IGBT1 and IGBT2 series connection, the collector of IGBT2 connects the collector of inductance L 1 and IGBT4, the other end of inductance L 1 connects respectively one end of capacitor C 1, controllable silicon VS2 one end, controllable silicon VS4 one end, controllable silicon VS2 and VS1 series connection, controllable silicon VS4 and VS3 series connection, the intermediate point of two series circuits connects respectively the two ends on the former limit of compensator transformer T1, another terminal connecting zero line of controllable silicon VS1 and VS3, another terminal connecting zero line of capacitor C 1, the emitter of IGBT4 connects the emitter of IGBT3, the collector connecting to neutral line of IGBT3.

4 IGBT are connected between the live wire and zero line of output voltage successively, and wherein IGBT1 and IGBT2 series connection in opposite directions, IGBT3 and IGBT4 connect in opposite directions; The duty of IGBT1 and IGBT2 is identical, and the duty of IGBT3 and IGBT4 is identical; And the in the situation that of IGBT1 and IGBT2 conducting, IGBT3 and IGBT4 cut-off, in the situation of IGBT1 and IGBT2 cut-off, IGBT3 and IGBT4 conducting.Controllable silicon VS1 is identical with VS4 duty, and controllable silicon VS2 is identical with VS3 duty, and the in the situation that of controllable silicon VS1 and VS4 conducting, controllable silicon VS2 and VS3 cut-off, in the situation of controllable silicon VS1 and VS4 cut-off, controllable silicon VS2 and VS3 conducting.

In the time of needs regulation output voltage swing, by controlling the ON time of 4 IGBT, carry out the size of the original edge voltage of control and compensation transformer T1, by controlling 4 silicon controlled duties, carry out the direction of control and compensation transformer T1 original edge voltage, obtain required compensation secondary voltage Δ U, thereby realize the adjusting of output voltage, the conducting of IGBT and closing time can be controlled at any time in a voltage cycle, therefore in the time that the voltage of instantaneous variation need to be provided, by conducting and the closing time of controlling 4 IGBT can be just to realize.

Accompanying drawing explanation

Fig. 1 is the major loop schematic diagram of the present embodiment.

Embodiment

Below in conjunction with embodiment and accompanying drawing thereof, the utility model is remake to description.

Referring to Fig. 1, contactless chopped mode regulating circuit, comprise 1 compensator transformer T1, 4 IGBT, 4 controllable silicons, 1 electric capacity and 1 inductance, input voltage live wire connects one end of compensator transformer T1 secondary, the collector of another termination IGBT1 of compensator transformer T1 secondary, and connect pressure regulation lead-out terminal, the emitter of IGBT1 connects the emitter of IGBT2, the collector of IGBT2 connects one end of inductance L 1 and the collector of IGBT4, the other end of inductance L 1 connects respectively one end of capacitor C 1, controllable silicon VS2 one end, controllable silicon VS4 one end, the one end on another former limit of termination compensator transformer T1 of controllable silicon VS2 and one end of controllable silicon VS1, the other end on another former limit of termination compensator transformer T1 of controllable silicon VS4 and one end of controllable silicon VS3, another terminal connecting zero line of the other end of controllable silicon VS1 and VS3, another terminal connecting zero line of capacitor C 1, the emitter of IGBT4 connects the emitter of IGBT3, the collector connecting to neutral line of IGBT3.

Principle of work: the Same Name of Ends of compensator transformer T1 two windings is the in the situation that of the same side, in the time that needs boost output, control IGBT1 and IGBT2 conducting, IGBT3 and IGBT4 cut-off, control controllable silicon VS2 and VS3 conducting, controllable silicon VS1 and VS4 cut-off simultaneously, voltage is by IGBT1 and IGBT2, process inductance L 1 and controllable silicon VS2 are to the one end on the former limit of compensator transformer T1, get back to zero line by the other end on the former limit of compensator transformer T1 through VS3 again and form a compensating circuit, realized pressure regulation output Uo=Ui+ Δ U; In the time of needs reduced output voltage, control IGBT1 and IGBT2 conducting, IGBT3 and IGBT4 cut-off, control controllable silicon VS4 and VS1 conducting, controllable silicon VS2 and VS3 cut-off simultaneously, voltage is by IGBT1 and IGBT2, process inductance L 1 and controllable silicon VS4 are to the one end on the former limit of compensator transformer T1, get back to zero line by the other end on the former limit of compensator transformer T1 through VS1 again and form a compensating circuit, realized pressure regulation output Uo=Ui-Δ U; In the time that output voltage need to be identical with input voltage, control IGBT1 and IGBT2 cut-off, IGBT3 and IGBT4 conducting, control controllable silicon VS2 and VS3 conducting, controllable silicon VS1 and VS4 cut-off simultaneously; The induced voltage on the former limit of compensator transformer T1 is got back to the other end on the former limit of compensator transformer T1 by controllable silicon VS2, inductance L 1, IGBT4, IGBT3 and controllable silicon VS3, form loop, the bucking voltage Δ U=0 of compensating circuit, output voltage U o=Ui.

Claims

1. contactless chopped mode regulating circuit, it comprises 1 compensator transformer T1, 4 IGBT, 4 controllable silicons, 1 electric capacity and 1 inductance, it is characterized in that: input voltage live wire connects one end of compensator transformer T1 secondary, the collector of another termination IGBT1 of compensator transformer T1 secondary, and connect pressure regulation lead-out terminal, IGBT1 and IGBT2 series connection, the collector of IGBT2 connects the collector of inductance L 1 and IGBT4, the other end of inductance L 1 connects respectively one end of capacitor C 1, controllable silicon VS2 one end, controllable silicon VS4 one end, controllable silicon VS2 and VS1 series connection, controllable silicon VS4 and VS3 series connection, the intermediate point of two series circuits connects respectively the two ends on the former limit of compensator transformer T1, another terminal connecting zero line of controllable silicon VS1 and VS3, another terminal connecting zero line of capacitor C 1, the emitter of IGBT4 connects the emitter of IGBT3, the collector connecting to neutral line of IGBT3.

2. contactless chopped mode regulating circuit according to claim 1, is characterized in that: the duty of IGBT1 and IGBT2 is identical, the duty of IGBT3 and IGBT4 is identical; And the in the situation that of IGBT1 and IGBT2 conducting, IGBT3 and IGBT4 cut-off, in the situation of IGBT1 and IGBT2 cut-off, IGBT3 and IGBT4 conducting.

3. contactless chopped mode regulating circuit according to claim 1, it is characterized in that: controllable silicon VS1 is identical with VS4 duty, controllable silicon VS2 is identical with VS3 duty, and the in the situation that of controllable silicon VS1 and VS4 conducting, controllable silicon VS2 and VS3 cut-off, in the situation of controllable silicon VS1 and VS4 cut-off, controllable silicon VS2 and VS3 conducting.