The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
This paper deals with the thermal stabilization of the power devices which was implemented in the compressor drive of the subway trains. This drive operates in start/stop mode, thus the thermocycling problems in the IGBT modules can occur. The algorithm of thermal stabilization is given and tests were conducted with the real power converter. The thermal images and temperature curves show the efficiency...
When power frequency alternating voltage was used to heat soybean milk, electrode surface was corroded. Aiming at this problem, a high frequency and high power supply based on ARM microprocessor was designed. This power supply consists of ARM microprocessor, human-computer interaction interface, direct current power module, inverter device and data acquisition device. And it could change direct voltage...
In the field of high-power converters, the standard IGBT module housing is the Ihm / Ihv established by Eupec during the 1990s. This paper explains the limitations of this housing and presents approaches for a new, next-generation housing. This new housing design targets a reduction of the leakage inductance and a significant power density improvement. With regard to the highest power densities for...
Many large capacity motor drive equipments have been used in the steel plants. High-efficiency motor drive equipments are required in the industrial fields. On the other hand, the replacement demand of cycloconverter to VSI (Voltage Source Inverter) is also increasing. Normally, the VSI such as IGBT (Insulated Gate Bipolar Transistor) / IEGT (Injection Enhanced Gate Transistor) inverter has low-harmonics...
This paper investigates inverter time ratings and short-time electrical and thermal limitations in peak duty intermittent-load motor drives. An inverter electro-thermal model is developed and validated to complement prior motor thermal models. The inverter model is used to assess short-time capabilities of IGBT inverters. The results show that the inverter is the thermal bottleneck for short-term...
The standard voltage source inverter (VSI), widely used in electric vehicle/hybrid electric vehicle (EV/HEV) traction drives, requires a bulky dc bus capacitor to absorb the large switching ripple currents and prevent them from shortening the battery's life. The dc bus capacitor presents a significant barrier to meeting inverter cost, volume, and weight requirements for mass production of affordable...
This paper will introduce the suitable power module for 3-level neutral-point-clamped converter from the cost-performance and electric performance. As a conclusion, CM1200HC-90R developed by Mitsubishi Electric is selected for a 3MW 3-level NPC converter. And the power loss for this application is also calculated.
Inverter-asynchronous motor compositive system (IAMCS) is composed of inverter and asynchronous motor, which shrinks the system volume but probably worsens heat emission and makes temperature rise more. Analyzing the system heat emission, this paper studied the designing method on asynchronous motor powered by inverter, and showed an optimized designing way on inverter and asynchronous motor in IAMCS...
This paper presents an approach for constructing a multi-frequency compact electro-thermal model of IGBT-devices as inverters. Frequencies and time-scales of heat oscillations of transistors and diodes of IGBT devices were revealed as a function of operating parameters of inverters. It was shown that heat could oscillate according to different frequency domains, one referring to the load amplitude...
This paper presents the dual high frequency quasi-resonant single inverter circuit that can output the frequency of 100 kHz or more by Power Metal Oxide Semiconductor Field Effect Transistor (MOSFET) for induction heating. The induction heating is often used for the heat-treatment of a metal work-piece. In hardening of a gear, since the bottom or tips are heated at lower frequency fL or higher frequency...
Design consideration of a three-phase inverter with 1200 V Si-IGBT and SiC-JBS hybrid pairs has been implemented to further reduce the power loss and increase the power density. A low-on-voltage SiC-JBS has been developed to reduce the conduction loss. In order to minimize the switching loss of Si-IGBT, a high-speed gate driving technique is introduced. A 4 kVA class three-phase hybrid pair inverter...
This paper proposes the experimental characterization and modeling of thermal runaway phenomena affecting high-voltage devices in the blocking state. In particular, it considers 6.5 kV rated multi-chip IGBT modules, of the kind employed in railway traction applications, showing how temperature and reverse bias voltage influence the off-state power losses and how the same thermal design may yield thermal...
State-of-the-art doubly-fed induction generator drives avoid operation at synchronous speed. Engineers point out stability problems and unequal heating of semiconductors and windings as the main reasons. The latter problem is consequence of unequal losses distribution in the semiconductors and rotor windings. This work investigates the thermal behaviour of the inverter switches at this singular point...
This paper presents an asymmetrical control with phase lock loop for series resonant inverters. This control strategy is used in full-bridge topologies for induction cookers. The operating frequency is automatically tracked to maintain a small constant lagging phase angle when load parameters change. The switching loss is minimized by operating the IGBT in the zero voltage resonance modes. The output...
This paper presents an innovative prototype of a new conceptual electromagnetic induction heated type far infrared rays radiant heating appliance using the voltage-fed edge-resonant ZVS-PWM high frequency inverter using IGBTs for food cooking and processing which operates under a constant frequency variable power regulation scheme. This power electronic appliance with soft switching high frequency...
Fast power devices thermal simulation method based on averaging power losses over each cycle of PWM switching frequency is presented in this paper. For implementing a long real time dynamic thermal simulation of power devices, device power losses during transient process and static characteristics are defined as a function of device conduction current and junction temperature, and are represented...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.