The High voltage power technology will help lead us to a more workable future. What are the different ways to realize this.
This article is division of Tech exchange: Power Supply Design:
What you will learn:
Important steps in designing high voltage systems.
Achieving high reliability and high efficiency for high voltage.
What are Pockets cells?
A look at Marcus Plus generators and a proposed boost version of the generator.
Rapidly increasing electricity consumption around the world requires innovative thinking from design engineers, which ultimately leads to more efficient designs that can make renewable energy and power technologies much more attainable.
Creating high-voltage applications presents a distinctive array of obstacles. This is where the fusion of power conversion, current and voltage sensing, isolation, and real-time control technologies becomes crucial, streamlining the complexities of high-voltage design. Consequently, this synergy empowers designers to attain unmatched levels of reliability and efficiency.
The Simplifying High-Voltage Designs:
Designing front-end power supplies will present some unique challenges arising from the high voltage requirements that must be met. Designers should always first look for design tools that simplify their high-voltage design applications.
The following 3 steps are critical in the design of high-voltage DC-DC or AC-DC circuit designs:
Understanding your system requirements: First determine the appropriate voltages for your design, that is, region-specific voltages such as US 120 V, China 220 V, Japan 100 V, and U.K. 230 V. You may be designing onboard. Power supply or charger application. What are the isolation requirements, if any? Will tighter output voltage regulation be required? On this front, TI’s WEBENCH High Voltage Power Designer can be of great help.
Choose the best control/topology scheme: Half-bridge and forward topologies are typically used at power levels from 100 to 500 W. Full-bridge topologies can provide power levels in excess of 500 W. Designers may want to design the controller to operate in continuous conduction mode (CCM) (where the magnetizing current in the transformer will not go to zero), discontinuous conduction mode (DCM) (where the magnetizing current would go to zero). is and remains at zero until the next switching cycle), or transition mode (TM) (where the magnetizing current reaches zero and the following switching cycle starts immediately). CCM is usually for higher power levels; DCM and TM will provide low loss solutions.
The High-Voltage Applications:
High voltage power supply for X-ray computed tomography (CT):
CT is a computerized X-ray imaging procedure that produces a narrow beam of X-rays directed at the patient’s body and then rapidly rotated around the body. Cross-sectional images, or “slices,” are called tomographic images. These images will allow a physician to access a more detailed 3D view than conventional x-rays. Figures 1 and 2 show the power supply inverter chassis.
Electric vehicles:
Vehicle electrification is rapidly becoming a widely accepted technology (Fig. 3).6,7 Today, electric vehicles (EVs) are powered by 400- or 800-V battery packs that extend the driving range. Enables faster charging while extending.
Pockets cell:
A Pockets cell is defined as an electro-optic device (such as an electro-optic modulator) made of an electro-optic crystal through which light is transmitted. The polarization direction of this light will be controlled by the voltage that is applied to the crystal. The voltage required for a Pockets cell depends on the type of cell, wavelength of light and crystal size. The voltage range is usually on the order of 1 to 10 kV.
The Pockets Effect describes the behavior of the Pockets cell. A constant or variable voltage (electric field) applied to the crystal will produce linear changes in the infringement of the crystal. The Pockets cell will act as a voltage controlled wave plate when a constant voltage is applied.
By applying a variable voltage, originator can use a Pockels cell to vary the phase delay through the crystal. Pockets cells are essential components in optical devices such as Q-switches for lasers and electro-optical modulators (EOMs).
In the application in Fig. 4, the Pockets cell acts as a quarter-wave plate, converting linearly polarized light to circularly polarized light. Adding a Brewster window (on the left side of Figure 4) will enable the change in polarization to be converted into a change in the intensity of the light beam simply by transmission on the p-polarized vector component.
Topics of interest include:
AC-DC converters.
DC-DC converters.
System integration.
Modeling and Simulation.
option.
Production and manufacturing issues.
Thermal and packaging issues related to power electronics.
Renewable energy systems including battery storage systems.
Power electronics for transpiration including vehicle electrification.
Power Electronics for Communications Applications.
Power Electronics for Industrial Applications.
Semiconductor devices (including WBG).
Passive components (including magnets and capacitors.
Power Electronics for Medical Applications.
Power Electronics for Computing Applications.
Power electronics for consumer applications.
Lighting systems.
Energy harvesting.
Gate drivers.
Business and Marketing of Power Electronics.
Regulatory compliance of power electronics are equipment (EMI, safety, regulations).
As part of the application process, students must provide information about their academic institution, degree program, the name of their faculty advisor, as well as their career interests and reasons for attending APEC. The application also requires the title and ID number of their accepted APEC paper, including the name of the co-author(s), if applicable.
About is the Applied Power Electronics Conference (APEC):
Named “The Chief as it occurs in Applied Power Gadgets”, APEC centers around the reasonable and applied parts of the power hardware business. This isn’t simply a creator’s meeting. APEC has interests for everybody in question in power gadgets:
The Equipment OEMs that use power supplies and dc-dc converters in their equipment.
Designers of power supplies, dc-dc converters, motor drives, uninterruptible power supplies, inverters, and any other power electronic circuits, devices, and systems.
Producers and providers of parts and gatherings utilized in power gadgets.
Manufacturing, quality, and test engineers are involved with power electronics equipment.
Anyone involved in marketing, sales, and power electronics business.
Compliance engineers test and qualify power electronics equipment or devices that use power electronics.