RU2478047C2 - Combined (hybrid) power plant of transport facility built around dynamotor assembly - Google Patents

Abstract

FIELD: transport.

SUBSTANCE: invention relates to automotive industry, particularly, to electrically driven vehicles. Proposed power plant comprises traction motor composed of reversible induction motor, electric power primary source composed of multifuel dynamotor unit, catalytic thermal reactor to generate synthesis gas on board the vehicle, energy buffer accumulator, and modular control system. Dynamotor unit comprises ICE running on synthesis gas and coupled with electrical generator. Fuel is fed into catalytic thermal reactor by fuel store and feed system. Traction motor is connected to energy buffer accumulator via inverter circuit. Separate modules of said control system are communicated with controlled objects and, directly, to top level electronic control system.

EFFECT: higher reliability, decreased harmful emission.

5 cl, 1 dwg

Description

The claimed technical solution relates to the field of transport engineering, namely to vehicles with electric traction.

The increase in the fleet, the reduction in oil-based fuel reserves, and the rise in oil prices determine the search for new and innovative solutions to reduce fuel consumption and harmful emissions into the atmosphere by vehicles. Currently, work on the creation of combined (hybrid) power plants of vehicles has become widespread.

Among the existing developments, one of the directions is the creation of combined power plants, the primary source of energy in which is the internal combustion engine (ICE). So, for example, from RF patent No. 17690 U1, IPC B60L 11/12, publ. 04/20/2001, a hybrid traction unit is known, comprising a chassis with drive wheels and a traction power plant including an internal combustion engine, a motor generator, traction motors associated with the drive wheels, a buffer battery and a capacitor battery, a control unit. Such a power plant, in comparison with the direct mechanical drive of the vehicle’s wheels from the internal combustion engine, can significantly reduce fuel consumption and improve environmental performance as a result of an increase in the operating time of the internal combustion engine in steady-state conditions, as well as as a result of the recovery of vehicle braking energy.

However, the use of internal combustion engines causes the use of liquid or gaseous hydrocarbon fuels, usually of petroleum origin, which, in turn, cannot but cause environmental pollution.

An alternative is the use of a synthesis gas-powered ICE as part of a combined power plant, which can be obtained directly on board a vehicle in a thermocatalytic reactor from various primary fuels, both of petroleum origin and non-petroleum - gasoline, diesel, bioethanol, ethanol, methanol and other

The combined power plant for a vehicle is a combination of diverse elements having different operating principles and output parameters. As a result, with a common control unit for all elements of a combined power plant, it solves many different tasks at the same time, which reduces its speed. In addition, the location of the individual elements of the combined power plant at some distance from each other causes a mismatch of the control actions and control signals due to distortion of the transmitted signals and the appearance of noise due to the interference of electrical noise in long wires.

The technical result, the achievement of which this technical solution is aimed, is to provide multi-fuel transport installation, i.e. ability to work on various types of fuel: both oil and non-oil origin with a significant reduction in the content of harmful substances in the exhaust gases of the internal combustion engine. In addition, the technical result is also to increase the reliability and accuracy of control of the combined power plant of the vehicle, which increases the efficiency of its work.

According to the claimed technical solution, a hybrid (combined) power installation (KEU) of a vehicle (TS), the platform of which is mainly a unified motor transport platform (UATP), includes a traction motor mechanically connected to the drive wheels of the vehicle, a primary source of electrical energy for charging the buffer storage energy (BNE), is an engine-generator set (DGU), consisting of an internal combustion engine (ICE), using as t fuel synthesis gas, and an electric generator driven by it, with a fuel preparation system, and a control system for KEU. The traction motor is connected to the BNE, which is several series-connected battery packs, with the possibility of consuming its energy during vehicle movement and energy recovery during vehicle braking. The traction motor is a reversible asynchronous frequency-controlled electric machine with a squirrel-cage rotor, connected to the BNE via a voltage converter (inverter). The primary source of electric energy, providing BNE charging, is an engine-generator set with an internal combustion engine (ICE), using synthesis gas highly saturated with hydrogen, and an electric generator (EG) driven by it, with a fuel preparation system, the main element of which is a thermocatalytic reactor in which the supplied hydrocarbon fuel is converted into synthesis gas by the heat energy of the exhaust gases of the internal combustion engine. The use of synthesis gas as a fuel for ICE makes it possible to achieve a significant reduction in the content of harmful substances in exhaust gases. DGU is connected to the BNE via a voltage converter (inverter), which converts the electric energy generated by the DGU to the parameters necessary for charging the BNE, and has an electric output for powering the electrified units of the vehicle (for example, electric power steering, compressor electric drive, etc.). The parameters of the fuel supply to the thermocatalytic reactor are set taking into account the operating modes of the internal combustion engine by the fuel storage and supply system (SHiPT). Moreover, each of the elements of the KEU has its own control and monitoring system (QMS). The control system of KEU additionally includes an electronic system of automatic control and control of the upper level (SAUiKVU), collecting information from individual ICs, based on which SAUiKVU, depending on external control signals from the control bodies of the vehicle (OS), coordinates the operation of all elements of the KEU. At the same time, at least one of the ICS systems and / or the ACSMS system are microprocessor-based.

The proposed technical solution is illustrated by the drawing (figure 1), which shows a schematic functional diagram of a combined power plant of a vehicle.

KEU incorporates a traction asynchronous electric motor (TAED) (2) with a short-circuited rotor, which is a reversible electric machine, the fundamental condition for the application of which is to provide it with high efficiency in the entire operating range of rotational speeds and loads. The TAED (2) is mechanically connected by means of articulated shafts and a reducer to the drive wheels (1) of the vehicle and develops the maximum power necessary for the dynamic movement of the vehicle, as well as energy recovery in the energy buffer (4) during braking of the vehicle. To ensure the coordination of electrical parameters between the TAED (2) and BNE (4), a voltage converter (inverter) (3) of frequency regulation was used.

One of the key elements of combined power plants are BNE (4). They are subject to stringent requirements for the characteristics of the specific power of both charge and discharge. The requirements for the capacity of energy storage devices in combined power plants are reduced compared with the requirements for electric vehicle storage. This is due to the presence of a primary energy source in the combined power plants, which ensures the range of the vehicle, while in the design of the electric vehicle the power reserve is provided by a single energy storage.

KEU TS works as follows. Primary fuel enters the thermocatalytic reactor (16) from the fuel storage and supply system (CXiPT) (8). In a thermocatalytic reactor (16), due to the energy of the exhaust gases of an internal combustion engine (ICE) (9), the primary fuel is converted into synthesis gas, which enters the ICE (9). ICE (9) drives an electric generator (EG) (7) that generates electricity to charge the BNE (4), which consists of four battery units. The BNE charge (4) is carried out through a voltage converter (inverter) (6). The energy stored in the BNE (4) is spent on supplying the TAED (2) through a voltage converter (inverter) (3), which converts the constant voltage of the BNE (4) into a variable frequency and amplitude and vice versa, which is necessary for energy recovery during braking. TAED (2) is mechanically connected to the drive wheels of the vehicle (1).

The control system of the KEU in the proposed scheme is multi-level and is made in a modular design. Separate modules of this system are made in the form of individual control and monitoring systems (C&C) (10), (11), (12), (13) and (14), which control and control such circuit units as: SCiPT (8), ICE (9), EG (7), Inverter (6), BNE (4) and Inverter (3). The described modules of the control system are connected with the objects of control and control and directly with the electronic system of automatic control and control of the upper level (SAUiK VU).

SAUiK VU serves to coordinate the actions of all elements of the power plant KEU, to ensure their most efficient operation and to control the entire power plant according to the signals of the controls (OS) (15) by the vehicle.

Claims (5)

1. Hybrid (combined) power installation (KEU) of the vehicle (TS), which includes a traction electric motor mechanically connected to the drive wheels of the TS connected to a buffer energy storage device (BNE) with the possibility of its energy consumption in the process of vehicle movement and energy recovery in the process vehicle braking, the primary source of electric energy for charging BNE, which is an engine-generator set with a fuel preparation system, and a control system for KEU, characterized in that the traction electric motor The atelier is a reversible asynchronous frequency-controlled electric machine with a squirrel-cage rotor, connected to the BNE via a voltage converter (inverter), the primary source of electric energy providing charging BNE, is an engine-generator set consisting of an internal combustion engine (ICE), which uses synthesis gas, and the electric generator (EG) brought by it, the fuel preparation system is a thermocatalytic reactor, in which due to the energy of of processed gases, arbitrary hydrocarbon fuel is converted into synthesis gas, the parameters of the fuel supply to the thermocatalytic reactor are established taking into account the operating modes of the internal combustion engine by the on-board fuel storage and supply system (SCiPT), the primary energy source is electrically connected to the BNE via a voltage converter (inverter) that converts the generated primary source of electric energy to the parameters necessary for charging the BNE, while the control system of the KEU includes individual inverters for each s, BNE, EG, ICE and SHiPT control and monitoring systems (SUiK), information from which is processed by the automatic control and control system of the upper level (SAU and KVU), which receives control signals from the control bodies of the vehicle (OS), depending on which Based on the information from the individual QMS, the ACS and KVU system manages the individual QMS, coordinating the work of all elements of the KEU. 2. KEU according to claim 1, characterized in that the BNE, which serves to accumulate electricity, is a series of series-connected battery packs. 3. KEU according to claim 1, characterized in that at least one of the systems of the automated control system and / or the automatic control system and the control system are microprocessor-based. 4. KEU according to claim 1, characterized in that the internal combustion engine used to drive the electric generator uses an internal combustion engine with a variable compression ratio. 5. KEU according to any one of claims 1 to 3, characterized in that it is installed on the vehicle platform, which is a unified motor transport platform (UATP).

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