Active voltage damping method with negative DC link current feedback in electric and hybrid electric transmissions
Annotation
Electric and hybrid electric transmissions in traction drive have a limited capacity power source. Since the traction drive operates in the torque source mode, the DC link voltage becomes unstable and goes into oscillatory mode. This leads to the software protection reaction which prevents the traction inverter overvoltage breakdown. The transition boundary to the oscillatory mode is determined by the power and the value of the capacitance installed in the electric transmission DC link. To increase reliability of the traction inverters, large-capacity electrolytic capacitors are replaced with small-capacity film capacitors which makes the system more prone to oscillations. To solve this problem, active damping methods are used allowing changing the engine dynamic characteristics by means of the control system. The software methods with power and torque proportional control are most widely used. Proportional power control is the simplest method in which the traction drive simulates an RL load. The torque proportional control method adjusts the torque reference according to the change in the DC link voltage. This paper proposes a new negative DC link feedback method. In this case, the torque is adjusted dynamically depending on the current consumed by the traction inverter from the electric transmission common DC link. Mathematical modeling methods were used to compare the known and proposed methods of DC link voltage active damping. Mathematical models have been developed in the MATLAB Simulink environment which makes it possible to investigate the damping capacity at various values of the power consumed by the traction inverter. It is shown that the proposed method with negative DC link current feedback demonstrated tuning simplicity. In comparison with proportional power and torque control methods, the proposed option is robust when setting parameters, provides a large damping coefficient over the entire range of traction drive power, and has a short duration of the transient process. The proposed method can be used to suppress DC link voltage oscillations on any type of hybrid electric and all-electric vehicles traction inverters and ensures stable and reliable equipment operation.
Keywords
Постоянный URL
Articles in current issue
- Polymer composition with phenanthrenequinone for recording relief holographic gratings
- Modern approaches to the application of mathematical modeling methods in biomedical research
- Analysis of the phase images obtained during the collection of a holographic registration system based on the geometric phase effect and a polarization camera
- Color triangle color separation system for colorimetric research in microscopy
- The concept of aerial photography using a two-element active optoelectronic complex
- Variational problem of adaptive optimal control. Theoretical and applied computer analysis
- Brief review of the development of theories of robustness, roughness and bifurcations of dynamic systems
- Multiple context-free path querying by matrix multiplication
- Predicting the results of the 16-factor R. Cattell test based on the analysis of text posts of social network users
- Methodology for the control of electric power distribution system components to ensure the quality of consumed electricity
- Voice based answer evaluation system for physically disabled students using natural language processing and machine learning
- Natural language based malicious domain detection using machine learning and deep learning
- Hybrid JAYA algorithm for workflow scheduling in cloud
- Information model of the essential goods purchase duration
- Analysis and control of user engagement in personalized mobile assisting software for chronic disease patients
- Role discovery in node-attributed public transportation networks: the model description
- A survey of network intrusion detection systems based deep learning approaches
- Monitoring the health status of the population by age groups
- An intelligent shell game optimization based energy consumption analytics model for smart metering data
- Comparative analysis of switched reluctance motor control algorithms
- Gas dynamics of stationary supersonic gas jets with inert particles exhausting into a medium with low pressure
- Mixed forms of free oscillations of a rectangular CFCF-plate
- Modeling of heat-hydrodynamic processes in evaporators of low-temperature systems with intrachannel boiling of refrigerants
- High performance modeling of the stress-strain state of thin-walled shell structures with the use of deep learning
- Validation of state machine specifications