CN204349649U - A kind of 200kW lightweight generator - Google Patents

Abstract

The utility model discloses a 200kW lightweight generator, which mainly includes a front end cover, a stator, a rotor, a rear end cover and an exciter stator; Cover and rear end cover; the front cover and rear end cover are made of cast aluminum alloy, the stator core of the exciter with windings and the rear end cover form the exciter stator, the span of the stator winding adopts 3/4 pitch, and the coil type adopts different Equal-turn double-stacked winding, the generator has no box and is a single support structure. The technical effects of the utility model patent are: simple structure, convenient manufacture, suitable for 200kW lightweight generators, and lighten the weight of generators under the condition of satisfying performance.

Description

A 200kW lightweight generator

technical field

The utility model relates to a generator, in particular to a 200kW lightweight generator.

Background technique

Vehicle power supply is also called power inverter. It is a kind of DC12V direct current that can be converted into AC220V alternating current that is the same as the mains. It is used for general electrical appliances. It is a convenient power converter. With the rapid development of information and communication, the vehicle power supply has also been developed at a high speed. Due to the limited weight of the vehicle, it is required that the weight of the generator should be as light as possible while satisfying the performance.

Contents of the invention

The purpose of the utility model is to provide a 200kW lightweight generator, which reduces the weight of the generator while satisfying the performance.

The technical scheme of the utility model is: a 200kW lightweight generator, mainly including a front end cover, a stator, a rotor, a rear end cover and an exciter stator; Installed on the front end cover and the rear end cover; the front end cover and the rear end cover are made of cast aluminum alloy, the stator core of the exciter with windings and the rear end cover form the exciter stator, and the span of the stator winding adopts 3/4 pitch, coil The type adopts double-layer stacked windings with unequal turns, and the generator has no box and is a single support structure.

The utility model uses cast aluminum alloy parts to reduce the weight of the generator, which is half less than the weight of cast iron parts; the stator winding span adopts 3/4 pitch, and the coil type adopts double-layer stacked windings with unequal turns, in order to meet the needs of the generator Requirements for weight and no-carrier waveform distortion rate (requires line voltage waveform distortion rate ≤ 3%, phase voltage waveform distortion rate ≤ 5%).

The performance characteristics of the engine described in the utility model are that the power user requires an overload of 10%, the actual power is 220kW, the weight user requirements are not greater than 715kg, the line voltage waveform distortion rate is not greater than 3%, and the phase voltage waveform distortion rate is not greater than 5%. Other performances meet the performance indicators of the generator not lower than or better than the provisions of GB/T 15548-2008 "General Technical Conditions for Three-phase Synchronous Generators Driven by Reciprocating Internal Combustion Engines". The weight of generators meeting this performance in the market is greater than 760kg.

The technical effects of the utility model patent are: simple structure, convenient manufacture, suitable for 200kW lightweight generators, and lighten the weight of generators under the condition of satisfying performance.

Description of drawings

Fig. 1 is the structural representation of the utility model.

In the figure: 1. Front end cover 2. Stator 3. Rotor 4. Rear end cover.

Detailed ways

The utility model works and implements in this way, a 200kW lightweight generator mainly includes a front end cover 1, a stator 2, a rotor 3 and a rear end cover 4; On the stator 2, the rotor 3 is installed on the front end cover 1 and the rear end cover 4; the front end cover and the rear end cover are made of cast aluminum alloy, the stator winding span adopts 3/4 pitch, and the coil type adopts unequal turns double-layer stacking Winding; the motor has no box, and the weight of the motor on the market is 760kg (including the weight of the box is 20kg).

The front end cover 1 and the rear end cover are made of cast aluminum alloy parts, and their weight is reduced from 55 kg of cast iron parts to 23.3 kg under the premise of ensuring strength. The 2/3 pitch of the winding can better meet the requirements of the waveform distortion rate, but the low winding coefficient is only 0.829, and the iron core is longer, which cannot meet the weight requirement. The winding takes 5/6 pitch and the winding factor can reach as high as 0.925. The iron core is short but cannot meet the requirements of phase voltage waveform distortion rate. The winding adopts 3/4 pitch and the winding factor is 0.885, which can meet the requirements of voltage waveform distortion rate and weight. . After the trial production of the motor is completed, the performance and weight of the motor meet the requirements of the type test. The weight of the motor is 710kg. The distortion rate of the phase voltage waveform is 4.8%, and the distortion rate of the line voltage waveform is 1.4%.

Claims (1)

1. a 200kW lightweight generator, mainly comprises front end housing, stator, rotor, rear end cap and exciter stator; It is characterized in that: front end housing and rear end cap are all contained on stator, rotor is contained on front end housing and rear end cap; Front end housing and rear end cap adopt cast aluminium alloy part, and band winding exciter stator iron core forms exciter stator with rear end cap, and the stator winding span circle double-layer overlapped winding such as adopt the employing of 3/4 pitch, coil pattern not, described generator, without casing, is single supporting construction.