Gourab Majumdar

Application characteristics of an experimental RB-IGBT (reverse blocking IGBT) module

This paper describes the characteristics of a new 1200 V, 100 A reverse blocking IGBT chip. It will be shown that this new chip exhibits symmetrical off-state blocking voltage and low losses making it a promising candidate for power conversion topologies such as matrix converters, current source inverters, and AC switches. A prototype module configured for the matrix converter application using the new RB-IGBT will also be presented.

A new generation high speed low loss IGBT module

By virtue of simulation and advanced process technologies the IGBT and the fast recovery diode chip structures have been modified to develop new generation low-loss power chips. These newly structured chips have been integrated into a moduler housing to form a 100A,600V dual type IGBT module that has exhibited superior characteristics, particularly in terms of reducing operational power loss over the conventional second generation counterpart. This paper will give details of this new generation IGBT module development and describe its characteristical superiority.

High-functionality compact intelligent power unit (IPU) for EV/HEV applications

A new high-functionality compact integrated Intelligent Power drive Unit (IPU) for electric and hybrid-electric vehicles (EV/HEV) is introduced in this paper for the first time. The IPU utilizes low-loss, rugged 5/sup th/ Generation Sub-/spl mu/ planar IGBT and ultra soft-recovery FWDi chips, and, in addition to various control functions, the IPU integrates a specially designed solid DC-Link capacitor. Through parts counts reduction and high functional integration, the newly developed IPU achieves an overall inverter system size and weight reduction of about 40-60% when compared with conventional systems. The IPU thus provides EV/HEV applications with high-efficiency, high-functionality, and high-reliability compact inverter systems.

A new intelligent power module with microprocessor compatible analog current feedback, control input, and status output signals

A new series of intelligent power modules (IPMs) designed for miniature, high performance, low power (0.1 to 1.5 kW) 240 V AC motor drives has been developed. The new IPMs contain IGBT and diode power chips, a high voltage IC and low voltage control logic in a compact isolated base module. Level shifting and charge pumping provided by the high voltage IC allows the module to be operated from a single supply referenced to the negative DC bus. The module has built in interlock logic to prevent shoot-through conditions and protection against output short-circuit, abnormal supply voltage and over temperature conditions. The module uses four separate status output lines to communicate the activation of the internal protection. Analog output current feedback signals are also provided to allow high performance control of torque and motor protection. The control inputs, status outputs and analog current feedback signals are all designed for direct connection to a microprocessor.

A new converter/inverter system for windpower generation utilizing a new 600 Amp, 1200 volt intelligent IGBT power module

This paper briefly reviews the need for windpower generation and the power quality issues associated with the utility interface. The design requirements for the system which drove the need for a new high power intelligent power module (IPM) are presented. The new IPM is described along with its key features and characteristics. The features and implementation of the generator and line side matrices are described. The operation of the IPM in the new system is described and its output along with the output waveforms of the line side inverter are shown. Switching waveforms from both pulse testing and full matrix operation are included to illustrate normal operating, short circuit, and over-current modes. Line side current waveforms demonstrate the effectiveness of the active line side filter in meeting the low total harmonic distortion requirements of the electric utility.<<ETX>>

Power module technology for home power electronics

A review of power module technologies used for inverter based home appliances have been made in this paper detailing elaborately about de facto Dual-In-line Intelligent Power Module (DIPIPM) and PV-IPM device groups. Descriptions of key technologies used in the growth process of these device families are also given highlighting on the latest trends in IGBT power chip, HVIC and packaging structure.

A New 100A, 500V Power MOSFET Module with Un-Precedented di/dt, dv/dt Endurance

A new 100A, 500V n-channel enhancement mode power MOSFET module is introduced in this paper. In the introduction an overview on the existing devices has been given. The nunerous merits of the new device are illustrated by means of various static and dynamic characteristics. The classic problem of intrinsic bipolar action, which leads to destruction of power MOSFET have been discussed. The new device has shown a very high level of ruggednes against di/dt, dv/dt stress besides low on-resistance, fast switching speed and other superior characteristics.