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This paper presents a magnetically integrated isolated bidirectional three-port DC-DC converter (TPC) that includes an integrated dual active bridge converter (DAB) and non-isolated bidirectional DC-DC converter (NBC), each of which can be independently controlled. The proposed TPC simultaneously uses large, small, and magnetizing inductances, of which the small and magnetizing inductances are used...
An improved circuit topology of Z-source inverter is presented that will meet the requirements and features of the Hybrid/Electric vehicle power control system. It is able to perform rectangular wave modulation for motor drive control depending on the drive condition of a motor which cannot be achieved from the conventional Z-source inverter.
In electric vehicular (EV) traction drives, Silicon Carbide (SiC) devices promise large savings in volume and weight of the converter system, especially when an inverter is combined with a boost DC/DC converter. Such a system has been designed, implemented and tested as a laboratory prototype. Detailed information on the component design is given and the prototypes characteristics are compared with...
The performance of a string of series-connected batteries is typically restricted by the worst battery cell in the string and a single failure point will render the entire string unusable. To address these issues, we present a decentralised battery management system based on a modular multilevel converter (MMC) with a distributed inductor. This novel MMC design enables each MMC cell to operate autonomously,...
A topology of a candidate rare-earth free Series Hybrid Electric Vehicle (SHEV) powertrain and the coordinated control of its components is presented in this paper. The powertrain is fed with a field controlled synchronous generator and a controlled battery bank and drives a 60 kW rare-earth free traction motor. Simulation results are presented for normal operating conditions and two faulted-mode...
A power module for hybrid electric vehicles is designed and constructed applying innovative packaging technologies. Instead of a DCB (direct copper bond) substrate and bond wire connections PCB (printed circuit board) technologies with embedded power semiconductors are used to build a 50kW automotive drive train inverter (Power PCB). The PCB technologies enable the design of very flat, compact and...
The Modular High Frequency converter (MHF) is a new converter topology especially designed for vehicle applications. It enables ultra-light weight and volume by drastic reduction of passive components and cooling equipment. This paper deals with an optimized control strategy of the MHF that leads to minimized capacitance installed in the drive system.
Realizing a sustainable society will require a reduction in CO2 emissions, and many different sectors of the economy are being encouraged to be energy efficient, including the electric power business, industry, and consumer and transportation businesses. In the transportation sector in particular, environmentally conscious vehicles that use power electronics will be essential as replacements for conventional...
Direct Water and Double-Sided Cooled Power Modules (DWDSCPM) are especially attractive due to high thermal performances. The DWDSCPM was able to reduce the thermal resistance by 50% and increase power density of the traction inverter by 70% in comparison with a conventional power module.
Direct Water and Double-Sided Cooled Power Modules (DWDSCPM) are especially attractive due to high thermal performances. The DWDSCPM was able to reduce the thermal resistance by 50% and increase power density of the traction inverter by 70% in comparison with a conventional power module.
The usage of magnetoresistive current sensors is increasing steadily in the field of power electronics. Sensors must not only be accurate and dynamic, but must also be compact and robust. An integrated SMT magneto-resistive current sensor as well as a 2 MHz bandwidth THT current sensor is introduced. Various future applications from the wide field of power electronics are shown that open up new possibilities...
Necessitated by the dwindling supply of petroleum resources, various new automotive technologies have been actively developed from the perspective of achieving energy security and diversifying energy sources. Hybrid electric vehicles and electric vehicles are a few such examples. Such diversification requires the use of power control units essentially for power control, power conversion and power...
The number of transformers needed in isolated power semiconductor device gate driver circuits can be reduced by using a phase-switched carrier signal technique. This is combined with integrated magnetic techniques to further reduce the number of isolation elements required. A circuit is presented which uses only a single magnetic component to drive both the power semiconductor devices in a bridge...
Switched reluctance motor (SRM) is attractive for the driving motor of electric vehicles (EVs) and hybrid electric vehicles (HEVs) from the view point which does not use rare-earth materials. However, special drive circuit, which is different from general three-phase inverter used for permanent magnet synchronous motor and induction motor, is required in order to drive SRM. By the way, in some of...
In this paper different cascaded and multilevel topologies are compared for regenerative braking systems using supercapacitors (SC). It shows that the multilevel buck derived topology can beneficiate from both reduced voltage across the inductor and increased frequency to reduce the output inductance, even if there is the need for an input LC filter to reduce harmonic content in the SC. Also, the...
This paper describes scheduled modernization of the laboratory working stand for a hybrid-electric drive. This paper describes the existing hybrid electric drive model and analyses previous research done by our department in the function of hybrid engines. Thereinafter, some defects in the current circuit are described. The last part of this paper describes the design of a new converter, which should...
The 3-level circuit topology is a suitable option for increasing power density of DC/DC converters. The advantage is theoretically investigated in comparison with an interleaved topology using a set of coupled inductors. The prototype achieved a high power density of 26.8 kW/liter at 60 kW output with 97.5% efficiency.
In hybrid electric vehicles more and more DC/DC-converters are used. The necessary effort for these converters must be determined carefully to make an economic and compact design possible. In this article the filter circuits for different multiphase DC/DC converters are calculated and compared to each other. The calculations are verified by several practical measurements on a three-phase DC/DC converter.
More and more, automakers are using hybrid drives and their advantages. Key components of these systems are an electrical machine and a converter, consisting of many electronic parts. This converter normally is arranged apart from the electrical machine in a separate housing. Thus the electronic components can be operated at moderate temperatures, in order to use the full potential of the hybrid system...
The neutron transmutation doping technology (NTD) is introduced to the semiconductor society, and the feasible future demand for the NTD wafers is presented in order to support the appropriateness of the construction of the NTD-dedicated neutron source. It is confirmed that neutron-transmutation-doped floating-zone silicon wafers are very useful in IGBTs which control the electric traction motors...
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