Rotor position sensor system for brushless motor control in IGBTS

Brushless motors are frequently used in (H) EV applications. These highly efficient motors are based on fast and precise rotor position sensors for switching, since these sensor parameters have a significant impact on starting behavior, dynamics, torque undulation, and efficiency. There are different principles to detect the position of the rotor: electromechanical (inductive) and magnetic resolution. Sensor systems based on solving the problems of transistors have some limitations (analog output, complex circuit, high system costs, space limitations, sensitivity to lost fields and positioning tolerances, etc.). 

The 32-bit AURIX microcontroller family, With its delta-sigma ADC to perform carrier signal generation and software-based coding, it already helps save the external resolution IC and, therefore, the system cost by 20%. On the other hand, magneto-resistant angle sensors (xMR) with AMR (Anisotropic-Magneto-Resistance) or GMR (Giant-Magneto-Resistance) technology offer high precision accuracy, combined with low sensitivity to the tolerances of position.

ROHM LAUNCHES IT’S 3RD GENERATION

Power semiconductors, including IGBTs, are gaining acceptance due to their implementation in many types of high voltage applications. However, these components are expected to achieve high efficiency and reliability in addition to maintaining low levels of losses. By expanding its existing range, consisting of IGBT for high current and IGBT with lower saturation voltage and faster switching, Rohm now presents its 3rd generation of IGBT for high efficiency. 

The new devices use a finer wafer structure, as well as field attenuation technologies and a trench gate structure to obtain the most advanced features in order to cover the growing need for high-frequency switching. The new Rohm 650V 3rd generation IGBT, based on an advanced field attenuation structure, they offer a lower gradient of carrier concentration in the drift region that allows for improved carrier distribution. Thanks to this, it is possible to reduce the saturation voltage and increase the switching speed, thus achieving an excellent compromise between the saturation voltage and the losses in the cut-off, unlike conventional solutions.

IGBT with Induction Cooker

The inductive cooktop creates a flat smooth surface that is easier to clean making it attractive to consumers. An induction cooker transfers electrical energy by induction from a coil of wire into any pot made of a material that is electrically conductive and ferromagnetic. A coil of wire is mounted under the cooking surface and a large alternating current is passed through it to transfer power to the pot. When an electrically conductive pot is brought close to the cooking surface, the magnetic field induces an electrical current in the pot. 

The current flowing through the electrical resistance in the pot causes electrical power to be dissipated as heat. The heating of the pot can be used for cooking the food. Induction cooktops have become very popular displacing most resistive heated cooktops. The power circuit used to deliver power to the pot via the coil must operate at a relatively high frequency of 25-50 kHz when compared with motor drive inverters. In order to reduce the switching losses in the IGBTs, the typical circuit topology is based upon resonant converters. Soft-switching circuit operation greatly reduces power losses during the switching transient in IGBTs providing high-efficiency circuit operation. Many companies have developed optimized IGBT structures for this application due to the large market size.

IGBT with Train Traction

Modern train traction systems use high-speed switching IGBTs in main circuits. High-speed switching reduces electromagnetic noise generated by the main motor and improves the efficiency of energy conversion. For the inverter control system, vector control is employed to control the torque current component and the exciting current component separately, which are output to the induction motor. Since vector control ensures high-speed torque control, it is also applied to slip-slide control to improve adhesion force. The maintenance work for contacts and pneumatic parts can be eliminated by replacing mechanical contacts in each unit with electronic contacts and by changing the pneumatic operation system to an electromagnetic one. 

The numerous advantages of insulated gate bipolar transistor (IGBT) power modules and their ongoing development for higher voltage and current ratings make them interesting for traction applications. These applications imply high-reliability requirements. One important requirement is the ability to withstand power cycles. Power cycles cause temperature changes which lead to mechanical stress that can result in a failure. Lifting of bond wires is thereby the predominant failure mechanism. A fast power cycling test method activating the main failure mechanism has been developed which allows the reproduction of millions of temperature changes in a short time. The applicability of fast testing is supported by mechanical analysis.

The system frequency converter provides a complete solution for medium voltage applications

The system frequency converter provides a complete solution for medium voltage applications PART 1 The WEG MVW3000 Series of variable speed drives has introduced new devices with many functions such as The MVW3000 medium voltage variable speed drive, which has an Efficiency, power density, and extremely high reliability, is sold as a complete system integrated in a distribution cabinet. WEG has also presented in the MVW3000 series of variable speed drives for voltages from 2.3kV to 8kV and power levels from 28 kW to 2,400kW. This family of devices is built with multilevel technology and Cascade H (CHB) bridges. The multilevel topology is based on the serial connection of three to ten low voltage (690 V) power modules with IGBT output converters in H-bridge configuration, depending on the output voltage. This allows reaching voltage levels in the medium voltage range using proven standard low voltage components (diodes, IGBT and plastic film capacitors) in a cost-effective manner. As a special feature, the MVW3000 is supplied as a complete system integrated into a distribution cabinet, including medium voltage isolator, fuses, multilevel power transformer, and frequency converter "The current-voltage and power range is only the first stage in the product evolution. Higher voltages and power levels are now available upon request, `` said Johannes Schwenger, head of Europe's low voltage and medium voltage product control systems at WEG. "

The MVW3000 is a high-performance all-in-one solution that eliminates the need for additional medium voltage switching devices. This variable speed transmission system has excellent input and output parameters, energy efficiency, and high availability, along with easy maintenance, modularity and smooth motor operation, this makes this variable speed drive system the ideal complement for all commercially available medium voltage motors and the perfect choice for retrofit projects thanks to its virtually output voltage sinusoidal ", if you want to know more about these new implements, join us in part 2 of this article. The MVW3000 variable speed drive system provides extremely high driving performance. The network power factor is greater than 0.95 over the entire engine speed range, without any additional harmonic filters or compensation capacitors. The integrated device architecture provides outstanding harmonic distortion figures for current and voltage (THD I / V and TDD) according to IEEE 519, IEC 61800-3 and G5 / 4-1. The device complies with the limits established in these standards, even in its basic configuration. The performance of the inverter, including the transformer, exceeds 95 percent over the entire motor speed range and is greater than 96 percent with load levels exceeding 40 percent. The charging circuit for the multilevel power transformer ensures the magnetization of the transformer core without starting currents and a smooth charge of the DC link capacitors for the inverter stage. 

The power transformer allows the adaptation of the mains voltage to the motor output voltage and the reduction of the common-mode voltage in the motor winding. It also reduces common-mode currents through motor bearings to maximize bearing life. The interfaces between the frequency converter CPU and the power stage for IGBT control, temperature monitoring, Voltage feedback, and current feedback are implemented using fiber optics to increase noise immunity and provide effective isolation between the control and power sections. The power stages (bridges H) are constructed with plastic film capacitors, semiconductor fuses and an automatic bypass function of the inverter to provide greater system availability in case of failure. Virtually sinusoidal output voltage and current reduce power dissipation, vibration and torque pulsation in the motor. In order to improve the reliability and availability of the system, the MVW3000 is equipped with motor protection devices for protection against overload, overheating and blocking of the motor rotor. 

The temperatures of the power stage and the transformer are also constantly monitored. As a packaging system, the MVW3000 simplifies installation and commissioning. The plug power stages facilitate maintenance and quick replacement. With dimensions of 3,900 x 2,210 x 1,100 mm (W x H x D), the variable speed drive system also has a small footprint. In addition, it can optionally be equipped with all the most common industrial communication protocols, including Modbus, Profibus, Devicenet, and Ethernet. 210 x 1,100 mm (W x H x D), the variable speed drive system also has a small footprint. In addition, it can optionally be equipped with all the most common industrial communication protocols, including Modbus, Profibus, Devicenet, and Ethernet. 210 x 1,100 mm (W x H x D), the variable speed drive system also has a small footprint. In addition, it can optionally be equipped with all the most common industrial communication protocols, including Modbus, Profibus, Devicenet, and Ethernet.

IGBT rectifier technology in UPS

UPS (Uninterruptible Power Supply) is considered as one of the best ways to save electrical equipment from power problems. It is an electrical apparatus that provides emergency power to a load when the input power source, typically mains power fails. At home, we need UPS when we use our PC. Other areas that need UPS are a data center, process backup, military operation, etc. There are several varieties of UPS: online UPS, offline UPS, and line-interactive UPS. 

Online UPS is inverter supply directly to load; offline UPS is the inverter starts only when the utility is not present, line-interactive UPS is an offline UPS with an AVR / line conditioner. There is an inverter that converts DC current (Battery power) to AC current is called UPS inverter. IGBT rectifier technology is the latest and most effective technology in the UPS industry. It uses the high frequency to rectify the AC to DC. IGBT rectifier reduces harmonics substantially and reduces the upsize of upstream components. Hence, reduce initial cost and operation cost.

TRENCHSTOP™ Performance IGBT improves energy efficiency for home appliance and industrial applications

On last April 28th, Infineon Technologies AG commenced the latest 600 V TRENCHSTOP™ Performance IGBT offering the next level of competency. The state-of-the-art discrete IGBT delivers high energy efficiency and reliableness at an aggressive price point for applications like air conditioning, solar PV inverters, drives and uninterruptible power supply (UPS). Based on Infineon’s TRENCHSTOP technology,the latest IGBT is optimized for hard switching topologies working at frequencies of up to 30 kHz. 

The latest TRENCHSTOP Performance IGBT series incorporates the best trade-off between conduction and switch-off energy losses with exceptional toughness. 5 µsec short circuit capacity and fantastic electromagnetic interference (EMI) behaviour. The 600 V TRENCHSTOP Performance is a great alternative to the predecessor TRENCHSTOP IGBT from Infineon as well as to contending products. In a plug-and-play replacement the new TRENCHSTOP Performance IGBT yields lessened losses of 7 percent at switching frequency of 8 kHz. A matchless 11 percent lower aggregate loss is delivered for switching frequency of 15 kHz. Making use of the same packages, redesigns for higher efficiency and competitive cost can be realized simply, fast and with less efforts. The 600 V TRENCHSTOP Performance IGBT contributes to more energy efficient power consumption, higher reliability and longer operational lifetime of the application. For end consumers this translates into a lower electricity bill, sustainability and environmental protection.

New and innovative launch of INFINEON and why you should implement it in your business

Infineon Technologies AG (FSE: IFX / OTCQX: IFNNY) expands its product portfolio of IGBT modules offering a discrete 1200 V up to 75 A. The devices are co-packed with a diode of maximum classification in a TO-247PLUS package. The new TO-247PLUS packages serve the growing demand for higher power density and greater efficiency in discrete packages. Typical applications with a blocking voltage of 1200 V that require high power density are units, photovoltaic and uninterruptible power supplies (UPS). Other applications include battery charging and energy storage systems. Compared to a TO-247-3 package, the new TO-247PLUS package can provide a double current rating. Due to the removal of the screw hole from the standard TO-247 package, the PLUS package has a larger lead frame area and therefore can accommodate larger IGBT chips. 

Now, for the first time, up to 75 A of 1200 V is available with IGBTs with the same small footprint. The larger lead frame provides lower thermal resistance of the TO-247PLUS, resulting in an improved heat dissipation capacity. For designers looking to improve switching losses, the TO-247PLUS 4pin package features an extra Kelvin emitter source pin. This allows a control loop through the emitter door, in turn, the inductance is ultra-low and reduces the total switching losses E (ts) by more than 20%. IGBTs classified as 1200 V as the TO-247PLUS of 3 and 4 packets they can use to increase the power density of the system. In addition, they can reduce the number of power devices used in parallel, increase the efficiency of the system or improve the thermal conditions of the system.

Automotive Semiconductor Market Report Accelerate Demand for Energy Components such as IGBT and MOSFET part 2

The safety and emission regulations will boost the market of the components and devices connected in the vehicle to ensure monitoring and notification of the emission of vehicles complying with the regulations established by the government. They require increasingly powerful semiconductors to ensure vehicle performance is in compliance. Therefore, the above reason, in turn, is helping the automotive semiconductor market to grow during the planned period of 2016-2024. 

In addition, vehicle standards such as the New Vehicle Assessment Program (NCAP), which gives safety ratings to new vehicles manufactured as stars, They are driving car manufacturers to provide more and more electronic components to provide more safety and security systems for the vehicle. Getting the highest level of five stars can act as a strong selling point for vehicles. Its achievement is based on complex and sophisticated assisted driving systems that require significant semiconductor content for these systems to work.

Automotive Semiconductor Market Report Accelerate the Demand for Energy Components such as IGBT and MOSFET part 1

In this report, we offer a complete market evaluation. through deep qualitative ideas, historical data and verifiable projections on the size of the market. The projections presented in the report have been derived using proven research methodologies and assumptions. In doing so, the research report serves as a repository of analysis and information for each facet of the market, including but not limited to Regional markets, technology, types, and applications. Increase security systems, not just passive security, p. (ABS), electronic stability control (ECS), blind-spot detection (BSD), adaptive cruise control (ACC) and lane change assistance (LCA), among others. All these intelligent functions mentioned above require a semiconductor device to perform its function. 

The main function of a semiconductor is to conduct electricity easily in one direction among other more specific functions. The safety and emission regulations will boost the market of the components and devices connected in the vehicle to ensure monitoring and notification of the emission of vehicles complying with the regulations established by the government.