CN202965928U - Super capacitor energy storage hybrid power system with ISG asynchronous motor - Google Patents

Abstract

The utility model relates to a pure super capacitor energy storage hybrid power system with an ISG (Integrated Starter and Generator) asynchronous motor, which is applied to urban large and medium-sized buses and can serve an engine start-up and stop function. The hybrid power system comprises an engine, the ISG asynchronous motor, a motor inversion controller, an ISG controller, a super capacitor, a voltage sampler, an excitation capacitor bank and a three-phase relay, wherein three terminals on one side of the three-phase relay are respectively in electrical connection with the ISG asynchronous motor and the motor inversion controller; and three terminals on the other side of the three-phase relay are respectively connected with three terminals of the excitation capacitor bank, which are electrically connected in a triangular manner. When the super capacitor is in a complete power failure, the pre-heating process of the engine is utilized to charge the super capacitor; and owing to the function, a vehicle can be normally started up for running despite low power or power failure of the super capacitor, caused by any reasons, and discharge maintenance of the super capacitor can also be realized.

Description

Super capacitor energy-storage ISG asynchronous dynamo hybrid power system

Technical field

The utility model belongs to the energy-saving automobile technical field, relates in particular to a kind of pure super capacitor energy-storage ISG asynchronous dynamo hybrid power system with driving engine starting and stopping function that is applied to the city large and medium bus.

Background information

Hybrid vehicle refers to that automobile uses fuel and two kinds of type of drive of driven by power, when advantage is vehicle launch, only by motor-driven, reaching certain speed of a motor vehicle driving engine just participates in driving, bad condition when driving engine is avoided the vehicle ground zero, make driving engine remain on the operation of optimum condition state, reach the purpose of oil-saving discharging-reducing.

The hybrid electric urban bus that present domestic operation is used, although only by motor-driven, driving engine does not participate in driving, and does not accomplish yet engine off when vehicle launch, driving engine is still in the idling mode running, and the idling mode operating condition is the most serious operating mode of discharging harmful exhaust.Reach oil-saving discharging-reducing effect to greatest extent, vehicle drives the stage at electricity, the driving engine operation of should stopping working, thereby produced and be applied to that driving engine starts automatically, the ISG motor of shutdown technology.

The ISG motor can be alternating current impression asynchronous dynamo, permagnetic synchronous motor, switched reluctance machines etc., the alternating current impression asynchronous dynamo because of technology maturation, reliability and durability and cost performance is high, a large amount of Bian of city bus ISG motor alternating current impression asynchronous dynamo.

Existing oil electric mixed dynamic technical scheme accumulator has three kinds of schemes:

The one, various batteries, and specific power of lithium ion battery, specific energy, charge-discharge characteristic, reliability, cost performance etc. make lithium ion battery almost become the unique selection of battery-driven car energy-storage battery;

The 2nd, ultracapacitor;

The 3rd, battery adds ultracapacitor.

Due to the Bian super capacitor energy-storage, can effectively avoid the not mature enough safety hazard that brings of current battery group technology, and the super capacitor long service life, therefore, super capacitor energy-storage is able to extensive Bian and uses.

But the super capacitor energy-storage hybrid power passenger car with Generation of induction motor of prior art, when the super capacitor electric weight is too small just can only be by manual operation, with external power supply, super capacitor being charged to the rated voltage vehicle could normally move, and charging operations is complicated, and work capacity is large; Therefore, when this type of vehicle was stopped in the long period, super capacitor was not made discharge process, can extend super capacitor service life and super capacitor is discharged entirely during vehicle parking.

Summary of the invention

The technical problems to be solved in the utility model is, a kind of super capacitor energy-storage ISG asynchronous dynamo hybrid power system is provided, too low or when being zero when DC bus-bar voltage, by external power, closed-centre system is not charged, the ISG asynchronous dynamo can generate electricity under driven by engine super capacitor is charged.

The utility model can super capacitor fully without Dian Qing Condition under, utilize the engine preheating process to complete super capacitor charged; After this function was arranged, no matter any reason causes the super capacitor electric weight not enough or without electricity, but all normal starting operations of vehicle also can realize the discharge maintenance to super capacitor.

The utility model is achieved in that

A kind of super capacitor energy-storage ISG asynchronous dynamo hybrid power system comprises

Driving engine;

The ISG asynchronous dynamo that is connected with engine mechanical;

Motor inverter controller with the electrical connection of ISG asynchronous dynamo;

Be connected in the ISG controller between driving engine and motor inverter controller;

Ultracapacitor with the electrical connection of motor inverter controller;

And be located at voltage sample device between motor inverter controller and ultracapacitor;

Be located at the exciting capacity group between motor inverter controller and ISG asynchronous dynamo;

With the three-phase electrical relay that the ISG controller is connected, three terminals of three-phase electrical relay one side are electrically connected with ISG asynchronous dynamo and motor inverter controller respectively; Three terminals of three-phase electrical relay opposite side are connected with three terminals of the exciting capacity group that is electrically connected with triangle manner respectively.

A kind of super capacitor energy-storage ISG Generation of induction motor control method is characterized in that this control method comprises the following steps:

When the voltage sample device detects DC bus-bar voltage in motor inverter controller operating voltage range, the motor inverter controller is to ISG asynchronous dynamo output exciting current, and the ISG asynchronous dynamo charges to super capacitor by the motor inverter controller under driven by engine;

When the voltage sample device detects DC bus-bar voltage lower than motor inverter controller operating voltage range or is zero, the motor inverter controller can not be exported exciting current, control the three-phase electrical relay adhesive, be ISG asynchronous dynamo access exciting capacity group, ISG Generation of induction motor under driven by engine, after a mistake motor inverter controller rectification, charge to super capacitor; Super capacitor voltage progressively rises, and after the voltage sample device detected bus voltage and reaches motor inverter controller operating range, three-phase electrical relay disconnected the exciting capacity group, turns by the motor inverter controller and carries out routine control to the ISG asynchronous dynamo.

A kind of super capacitor energy-storage ISG Generation of induction motor control method is characterized in that this control method comprises the following steps:

When the ISG controller is received the generator operation order, when fuel tank fuel quantity is normal, bus voltage is greater than setting value 1, control ISG electric motor starting driving engine, and the tickover warm-up the engine;

When Engine Coolant Temperature reaches setting value, the control engine raising speed is to the setting speed running, and instruction motor controller controls ISG Generation of induction motor, and electric energy charges to super capacitor;

When bus voltage reaches setting voltage 2, stop generating electricity and killing engine.

More than to reach setting voltage 1 when bus voltage, that is the conventional state I SG hybrid power generator operation control flow of bus voltage in motor inverter controller operating voltage range the time;

When fuel tank fuel quantity is normal, DC bus-bar voltage is lower than setting voltage 1, the motor inverter controller can not service condition under, driving engine is by the starting of conventional engine Starting motor and tickover, warm-up the engine;

When Engine Coolant Temperature reaches setting value, the control engine raising speed is controlled the three-phase electrical relay adhesive simultaneously to the setting speed running, access exciting capacity group;

ISG Yi Walk motor begins to send alternating current, due to this moment DC bus-bar voltage do not reach motor inverter controller operating voltage range, the motor inverter controller can not be controlled the ISG asynchronous dynamo, the AC rectification that can only send the ISG asynchronous dynamo is direct current (DC), by dc bus, super capacitor is charged;

In process of charging, the electric weight that super capacitor stores progressively improves with bus voltage and increases;

When bus voltage reached setting voltage 1, three-phase electrical relay disconnected, and turned by the motor inverter controller and controlled the ISG Generation of induction motor;

When bus voltage reaches setting voltage 2, stop generating, kill engine, enter armed state.

The utility model super capacitor energy-storage ISG hybrid power system is parked for a long time at just entrucking, vehicle, the hybrid power system failure and other reasons is made accumulator super capacitor voltage below level or when being zero, do not need external charge, just can self power generation; Removal improves safety and work efficiency to the cumbersome charging operations of super capacitor.

Description of drawings

Fig. 1 is that the utility model embodiment Generation Control sieve is collected block diagram.

Fig. 2 is the super capacitor energy-storage ISG asynchronous dynamo mixed power system structure principle schematic that the utility model embodiment provides.

Fig. 3 is prior art super capacitor energy-storage ISG asynchronous dynamo mixed power system structure principle schematic.

Wherein, 1, driving engine; 2, asynchronous dynamo; 3, motor inverter controller; 4, ISG controller; 5, three-phase electrical relay; 6, exciting capacity group; 7, dc bus; 8, super capacitor; 9, voltage sample device.

The specific embodiment

For making the technical problems to be solved in the utility model, technical scheme and beneficial effect Geng Jia Cheongju Chu clear, below in conjunction with drawings and Examples, the utility model is further elaborated.

as shown in Figure 2, in the utility model embodiment, super capacitor energy-storage ISG asynchronous dynamo hybrid power system, comprise driving engine 1, ISG asynchronous dynamo 2 with driving engine 1 mechanical connection, motor inverter controller 3 with 2 electrical connections of ISG asynchronous dynamo, be connected in the ISG controller 4 between driving engine 1 and motor inverter controller 3, three terminals of one side of three-phase electrical relay, be connected with three wires that ISG asynchronous dynamo 2 and motor inverter controller 3 are electrically connected respectively, three terminals of three-phase electrical relay 5 opposite sides, three terminals with the exciting capacity group 6 that is electrically connected with triangle manner are connected respectively, motor inverter controller 3 is by dc bus 7 and super capacitor 8 electrical connections, the voltage Bian sample device 9 and 4 electrical connections of ISG controller that connect dc bus 7.

Fig. 1 shows the utility model embodiment proposition, super capacitor energy-storage ISG asynchronous dynamo hybrid power system, and the ISG Generation of induction motor is controlled sieve and is collected and realization flow, and details are as follows:

When the ISG controller is received the generator operation order, when fuel tank fuel quantity is normal, bus voltage is greater than setting value 1, control ISG electric motor starting driving engine, and the tickover warm-up the engine;

When Engine Coolant Temperature reaches setting value, the control engine raising speed is to the setting speed running, and instruction motor controller controls ISG Generation of induction motor, and electric energy charges to super capacitor;

When bus voltage reaches setting voltage 2, stop generating electricity and killing engine.

More than to reach setting voltage 1 when bus voltage, that is the conventional state I SG hybrid power generator operation control flow of bus voltage in the electric machine controller operating voltage range time.

When fuel tank fuel quantity is normal, DC bus-bar voltage is lower than setting voltage 1, electric machine controller can not service condition under, driving engine is by the starting of conventional engine Starting motor and tickover, warm-up the engine;

When Engine Coolant Temperature reaches setting value, the control engine raising speed is controlled three-phase electrical relay 5 adhesives simultaneously to the setting speed running, access excitation capacitor 6;

ISG Yi Walk motor begins to send alternating current, due to this moment DC bus-bar voltage do not reach the electric machine controller operating voltage range, electric machine controller can not be controlled the ISG asynchronous dynamo, the AC rectification that can only send the ISG asynchronous dynamo is direct current (DC), by 8 chargings of 7 pairs of super capacitors of dc bus;

Process of charging, the electric weight increase bus voltage that stores with super capacitor progressively improves;

When bus voltage reached setting voltage 1, three-phase electrical relay 5 disconnected, and turns the Generation of induction motor by motor controller controls ISG;

When bus voltage reaches setting voltage 2, stop generating, kill engine, enter armed state.

Claims (1)

1. a super capacitor energy-storage ISG asynchronous dynamo hybrid power system, is characterized in that this hybrid power system comprises

Driving engine;

The ISG asynchronous dynamo that is connected with engine mechanical;

Motor inverter controller with the electrical connection of ISG asynchronous dynamo;

Be connected in the ISG controller between driving engine and motor inverter controller;

Ultracapacitor with the electrical connection of motor inverter controller;

And be located at voltage sample device between motor inverter controller and ultracapacitor;

Be located at the exciting capacity group between motor inverter controller and ISG asynchronous dynamo;

With the three-phase electrical relay that the ISG controller is connected, three terminals of three-phase electrical relay one side are electrically connected with ISG asynchronous dynamo and motor inverter controller respectively; Three terminals of three-phase electrical relay opposite side are connected with three terminals of the exciting capacity group that is electrically connected with triangle manner respectively.

Images