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In this paper, the control of the inverter output current for the wireless power transfer system that responds to the load changes is presented. The wireless power transfer system is composed of the high frequency inverter for power conversion, power cable on the ground, and on-board pick-up to produce the power by electro motive force that reacts to the magnetic field of the power cable on the ground...
Reliability of Power inverter in an Electric Vehicle is of great importance as it is one of the most critical components of the electric powertrain. The failure rate prediction model (parts count method) is utilized to calculate reliability of Power inverter topologies. It is found that paralleling the switching devices increases the reliability of the Power inverter but the reliability saturates...
This paper presents a novel high-frequency split-phase SiC inverter suitable for vehicular power generators. Electrification of vehicles such as recreational vehicles (RV's), fire trucks, and media/telecommunication vans requiring variable-speed generators and power electronics are discussed. Two inverters, designed using commercially available all-SiC MOSFET and Si IGBT power modules, are built and...
High-power, bidirectional DC/DC converters are widely used in electric vehicles. As vehicle volumes increase, the robust and efficient testing of these converters will be key to high reliability and low cost. A highly configurable, closed-loop, regenerative burn-in test system is presented here that reduces power supply and load requirements to less than 1/10th of those required for conventional test...
Aircraft DC buses are variable due to the variable speed generators which constrains to design the actuator for the lowest DC voltage value which leads to over-sizing VSIs of actuators. It is proposed to use a quasi Z-source inverter to increase the torque constant in order to reduce the phase currents consequently the losses and increase input inverter voltage at high speed to keep the control of...
This paper proposes a simple space vector pulse width modulation (SVPWM) scheme for operating a three-phase three-level neutral-point clamped (NPC) voltage source inverter (VSI) at higher modulation indexes, including overmodulation region. Generally, the overmodulation techniques for SVPWM inverter need to store lots of data in the controller beforehand, which produces a huge memory while the control...
Induction motor drives are conventionally operated with a fixed inverter dc-link bus voltage. However, low drive speeds will result in low modulation index and poor dc bus utilization of the inverter. Aperiodic current controllers, such as hysteresis controllers, exhibit increased switching frequencies and losses for higher dc-link voltages. These high switching frequencies can be avoided by dynamically...
This paper presents a new topology of an isolated multilevel inverter that can be used for high voltage and high power applications such as integrating battery storage systems and alternative energy sources to power grid. With reduced number of components the proposed cascaded multilevel inverter requires only one dc source by cascading high frequency transformers. The core building blocks in the...
The paper deals with the electric hybridization of a bow thruster for a river tugboat application. The knowledge gap leads to the full electrical retrofit of a previously high power hydraulic bow thruster system, in the objective of having more electrified subsystems in the boat, leading to an eco-friendly solution. This electrified solution feeding a Permanent Magnet Synchronous motor with on-board...
A novel power electronic transformer (PET) topology with multiport bidirectional resonant DC-DC converters is proposed where several medium-frequency multi-winding transformers is applied to realize the isolation. The topology is with high power density as well as high efficiency, which is a appropriate solution for electric tracton application like locomotives and high speed EMU trains. The power...
The number of distributed energy resources are increasing in modern power systems. Vehicle-to-grid power transfer is envisioned to become another type of distributed energy resource and support energy needs of the grid under various circumstances. This paper investigates the stability and power quality of a parallel grid-connected inverter system for vehicle-to-grid application using modeling and...
A new method which uses the voltage source PWM inverter (VSI) to identify the induction machine (IM) parameters is proposed based on the reduced-order models of induction machine. All the variables for parameter extraction are obtained by the inverter and converted to the dq frame using the FOC software modules. The variables are DC values and low-pass filter may be used to reduce the harmonic and...
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