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This paper deals with a mobile phone application that allows the user to analyse their driving habits and therefore recognize whether an electric vehicle would suit the users' requirements. The application analyses the daily trips and charging possibilities, recorded as per user input. The resulting demands are compared to available electric vehicles as well as extended range electric vehicles and...
The presented paper introduces a sensor minimal battery observer, which allows the equipping of each stack with only one voltage and one current sensor, without losing the required individual cell measurement. The individual cell measurement is required not only for many Li-Ion applications with cell chemistry that can result in exothermic reactions. For a stack with 12 cells this can results in a...
This paper illustrates a LCL-filter design for a high power DCDC converter such as a buck boost converter for a battery charging application. The filter is used to reduce load current fluctuations in order to increase the quality of the charging current. It can be used in applications with high requirements on the load currents. A DCDC converter with a LCL filter can also be used to investigate different...
A drive train system (DTS) powered by an ideal voltage source and driving a permanent-magnet synchronous motor (PMSM) is discussed in this paper. A two-level three-phase voltage source inverter is used as a means of power conditioning. This converter is not equipped with any harmonic filters on neither the ac nor the dc side. The mechanical part of the DTS is modeled as a double oscillator according...
This Paper describes the structural development of a management software for battery test bed. This test bed is designated for long-term measurements in order to investigate the features of various types of batteries. The management system allows a cyclization of the batteries including periodical measurements. These measurements include an electrochemical impedance spectroscopy (EIS). Details of...
The simulation of a direct torque hysteresis controller (DTHC) driving an interior permanent magnet synchronous machine (IPMSM) is presented in this paper. The underlying switching concept as well as a proposed experimental setup is discussed. Various simulations, varying the torque and current tolerances, are carried out in the low torque and high torque range. Simulation results show a direct influence...
The application of a direct torque hysteresis controller (DTHC) driving an interior permanent magnet synchronous machine (IPMSM) in the dynamic state is presented in this paper. The underlying switching concept as well as a proposed experimental setup is discussed. Positive and negative torque setpoint steps are simulated in the low torque and high torque range. Simulation results show that the number...
In this paper a modulation strategy for an active rectifier is discussed. The rectifier is equipped with bi-directional switches to allow full control of the energy flow. This modulation strategy is based on a carrier signal whilst the switching frequency remains variable within a certain range. The switching frequency is dependent on the input value for the inverter output voltage. This modulation...
This paper presents a battery test bench for investigation of cell parameters for a battery management system. The test bench is used to examine the cell parameters as open circuit voltage (UOC), cell resistance (Ri) and the cell capacity (C). The results were analyzed to find dependency to the state variables state of charge (SoC), state of health (SoH) and state of function (SoF). For this paper,...
A modulation strategy for an active rectifier is discussed in this paper. It is designed for an inverter which is structurally based on the topology of the rectifier stage in an indirect matrix converter. This modulation strategy is based on a carrier signal whilst the switching frequency remains variable within a certain range. The switching frequency is dependent on the input value for the inverter...
This paper compares two control methods for electric vehicle propulsion by means of asynchronous motors. The basic underlying powertrain configuration and the control structure is presented. Two control methods, a symmetrical sinusoidal modulation and a rotational space vector hysteresis control are introduced and compared. Simulations are shown for both controllers using a single asynchronous motor...
This paper describes a modern sensor technology for utilization within both electric vehicles and charging stations. The robustness in both mechanical and electrical influence are stated. The multifunctional technique is explained and results for numerous electric vehicle applications are shown. The paper concludes that the multifunctional sensor technology allows a wide range of demands such as robustness...
A modified modulation strategy for an active rectifier is discussed in this paper. It is designed for an inverter which is structurally based on the topology of the rectifier stage in an indirect matrix converter. This modified modulation strategy is based on a carrier signal whilst the switching frequency is still variable within a certain range. This is dependent on the input value for inverter...
In this paper rotational space vector hysteresis control implementations are evaluated for the usage in electric vehicles with either an induction machine or a permanent magnet synchronous motor. The powertrain layout is introduced and the control concept is explained in depth. For both motor configurations, simulation results are presented in comparison. Both motors can be used in combination with...
This paper investigates a control strategy for grid-connected wind energy conversion systems with doubly-fed induction generators, that employs a novel d-q hysteresis current regulator in the inner control loops. Although the current control is implemented in a rotating reference frame synchronous to the positive sequence space vector of the grid voltage, it can be used to generate negative sequence...
A drive train system (DTS) powered by a battery and driving a permanent magnet synchronous motor (PMSM) is discussed in this paper. A two-level, three-phase conventional inverter with no harmonic filters on both AC and DC sides is used as means of power conditioning. This DTS is modelled as a double oscillator according to the mechanical part in an electric vehicle. Two inverter modulation schemes...
With the growing use of Electric Vehicles (EV's) the quality and durability of the battery is the most restrictive factor. To facilitate a greater durability there are some restrictions to the batteries and methods of use which should be upheld. According to these restrictions this paper evaluates the load of the battery according to a full electric and mechanic drive train using the symmetric sine...
This paper deals with the determination of a battery model for different designs of lead-acid based batteries. Even though batteries with gelled electrolyte and absorbent glass mat (AGM) batteries are based on the chemistry of common leadacid batteries they differ in regards to the parameters of a battery model. In this paper several measurement methods for the identification of these parameters are...
A drive train system (DTS) powered by a battery and driving a permanent magnet synchronous motor (PMSM) is discussed in this paper. A two-level, three-phase conventional inverter with no harmonic filters on both AC and DC sides is used as means of power conditioning. This DTS is modeled as a double oscillator according to the mechanical part in an electric vehicle. Two inverter modulation schemes...
A novel hysteresis controller with a direct torque constraint hysteresis (DTCH) shape based on the d-q-coordinate System is presented in this paper. This controller supports the inverter of the drive train system with a bit-pattern. The Inverter drives a permanent magnet synchronous motor (PMSM) by connecting a dc-source, e.g. a Battery-System or a dc-link to the drive. Calculation of the hysteresis...
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