DE102009007956A1 - Inverter for supplying electric motor, has control electronic unit, motor phase modules and rectifier module, which are attached to frames, and free space region provided with tool for actuating connection devices - Google Patents

Abstract

Inverter, comprising connecting device operable with a tool, by means of which busbars leading from the outside and / or to the outside can be electrically connected to busbars comprised by the converter, in particular also being mechanically connectable,
wherein the converter comprises control electronics for generating drive signals for power semiconductors of an inverter, in particular of an inverter constructed of individual motor phase modules,
wherein the converter comprises a power supply for supplying the control electronics,
the converter comprising a frame to which the control electronics, the inverter, in particular its motor phase modules, and further modules are attached,
whereby the power supply can be pulled out via rails from the frame of the converter,
wherein the freely displaceable by withdrawing space area for actuating the connecting device is provided with a tool, in particular is necessary.

Description

The The invention relates to a converter.

It It is known to use converters for the supply of electric motors.

Of the Invention is therefore the object of a compact converter train.

According to the invention Task in the inverter according to the features specified in claim 1 solved.

Important features of the invention in the converter are that it comprises actuatable connection devices with a tool, by means of which from outside and / or outside leading busbars are electrically connected to the busbars included in the converter, in particular also mechanically connectable,
wherein the converter comprises control electronics for generating drive signals for power semiconductors of an inverter, in particular of an inverter constructed of individual motor phase modules,
wherein the inverter comprises a power supply for supplying the control electronics, the
the converter comprising a frame to which the control electronics, the inverter, in particular its motor phase modules, and further modules are attached,
whereby the power supply can be pulled out via rails from the frame of the converter,
wherein the freely displaceable by pulling out space area for actuating the connecting devices is provided with a tool, in particular is necessary.

From The advantage here is that a compact design in a converter allows is, where busbars are used, so compared to cables less elastic electrical wires. Thus, the inverter for currents of 100 Amps and more interpretable in a very compact way. To connect the External busbars, the connection area is easily accessible feasible by pulling the other module on rails. Thus, the Connection area quickly accessible, but also estimable by pushing in the other module.

at an advantageous embodiment are of the connection devices Includes screws from the tool designed as a screwdriver actuated are. The advantage here is that simple cost-effective means can be used, thus allowing a simple electrical connection.

at an advantageous embodiment are by means of screws the From the inverter included busbars with the outside and / or outward leading Busbars electrically connectable by operating the screws. Advantageous is that a simple tool is usable.

at An advantageous embodiment is with inserted power supply the operation the connection devices with a tool not executable. From The advantage here is that the connection area can be touch-protected by means of the inserted, the power supply module.

at An advantageous embodiment is an electrical supply line from the control electronics module to a connector provided on the power supply guided. The advantage here is that the electrical connection even when pulled out another Module executable is.

at an advantageous embodiment of the busbars busbars includes, which acts as electrical leads to a braking resistor are, with the supplied to him Power is controlled by a brake chopper in one of the Inverter included Bremschoppermodul is arranged and by the Control electronics is controlled.

at a further advantageous embodiment of the busbars Busbars included as electrical leads to from the inverter supplied motor are effective.

at an advantageous embodiment of the busbars busbars includes, as electrical wiring to power the inverter are effective from the network.

Further Advantages emerge from the subclaims.

1

rail part

2

frame part

3

connection means for mains supply

4

connection means for motor connection cable

5

connection means for connecting cables for brake resistor

6

Against rail part

7

mounting plate

8th

24-Volt power adapter

9

busbars for rectifier module

10

busbars for motor phase modules

The Invention will now be explained in more detail with reference to figures:

In the 2 is a section of an inverter according to the invention in an oblique view shown from a first viewing direction, wherein the 24 volt power supply 8th shown pulled out on the counter rail part.

In the 3 an associated oblique view is shown from a different perspective.

In 1 the section of the inverter is shown in the inserted position.

The inverter is composed of modules that are attached to a frame. As modules at least one rectifier module are provided, which by means of busbars 9 electrically with the connection means 3 connected to the power supply lines. The output side of the rectifier module is connected to a capacitor module and supplies three motor phase modules, each comprising a series circuit of controllable power semiconductors whose node is electrically connected to the busbars 10 , in turn, with the connection means 4 are connected for connecting the motor connection cables. Another module is a control electronics comprehensive module, the control electronics generates drive signals for the phase modules.

The modules are attached to the frame, which frame parts 2 includes on which rail parts 1 are attached. On these rail parts 1 are counter-rail parts 6 another module inserted or pulled out, which is a power supply 8th for generating 24 volts and on a mounting plate 7 is fixed, in turn, the counter-rail parts 6 are provided.

The Power supply unit generates the supply voltage for the control electronics. For this is a plug connection provided on the power supply, wherein the control electronics leading Cables can be connected by means of a connector part with the power supply.

Thereby, that the further module including power supply in a simple way on rails is withdrawable, the connection area for the outside of the inverter heranzuführenden Busbars accessible in a simple manner. In particular, screws to connect from the outside in leading Busbars with busbars covered by the inverter with one Screwdriver operated as a tool after removing the further module.

On In this way, a particularly compact design of the inverter can be achieved.

Claims (8)

Inverter, comprising tool-operable connection devices, by means of which external and / or outgoing busbars with busbars included in the converter ( 9 . 10 The converter comprises control electronics for generating drive signals for power semiconductors of an inverter, in particular a constructed of individual motor phase modules inverter, wherein the inverter comprises a power supply for supplying the control electronics, wherein the inverter is a frame comprises, on which the control electronics, the inverter, in particular its motor phase modules, and other modules are fixed, characterized in that the power supply is pulled out via rails from the frame of the inverter, wherein the freely removable by pulling out space for actuating the connecting devices with a Tool is provided, in particular necessary. Inverter after at least one of the preceding Claims, characterized in that comprises of the connecting devices screws are that are actuated by the executed as a screwdriver tool. Inverter after at least one of the preceding Claims, characterized in that by means of the screws from the inverter included busbars with the outside and / or outside leading Busbars are electrically connected by pressing the Screws. Inverter after at least one of the preceding Claims, characterized in that when the power supply is inserted, the actuation of the connection devices not executable with a tool is. Inverter after at least one of the preceding Claims, characterized in that an electrical supply line from the control electronics module to a connector provided on the power supply guided is. Converter according to at least one of the preceding claims, characterized in that the busbars comprise busbars which are effective as electrical lines to a braking resistor, wherein the power supplied to it is controlled by a brake chopper arranged in a brake chopper module comprised by the converter is and from the tax electronics is controlled. Inverter after at least one of the preceding Claims, characterized in that of the busbars busbars are included, which are supplied as electrical lines to the inverter Engine are effective. Inverter after at least one of the preceding Claims, characterized in that of the busbars busbars includes, as electrical wiring for powering the inverter are effective from the network.