Conversion and control with high-voltage transistors with insulated inputs

1968 ◽  
Vol 4 (3) ◽  
pp. 339-339
Author(s):  
R. Morgan
Keyword(s):  
High Voltage ◽  
And Control

scholarly journals Fault Simulations in a Multiterminal High Voltage DC Network with Modular Multilevel Converters Using Full-Bridge Submodules

Energies ◽  
2021 ◽  
Vol 14 (6) ◽  
pp. 1653
Author(s):  
Ioan-Cătălin Damian ◽  
Mircea Eremia ◽  
Lucian Toma
Keyword(s):  
High Voltage ◽  
Energy Resource ◽  
Fault Analysis ◽  
Renewable Energy Resource ◽  
Dynamic Simulations ◽  
Multilevel Converters ◽  
Strong Focus ◽  
Modular Multilevel Converters ◽  
Overhead Power Lines ◽  
And Control

The concept of high-voltage DC transmission using a multiterminal configuration is presently a central topic of research and investment due to rekindled interest in renewable energy resource integration. Moreover, great attention is given to fault analysis, which leads to the necessity of developing proper tools that enable proficient dynamic simulations. This paper leverages models and control system design techniques and demonstrates their appropriateness for scenarios in which faults are applied. Furthermore, this paper relies on full-bridge submodule topologies in order to underline the increase in resilience that such a configuration brings to the multiterminal DC network, after an unexpected disturbance. Therefore, strong focus is given to fault response, considering that converters use a full-bridge topology and that overhead power lines connect the terminals.

scholarly journals A Novel Series Connected Batteries State of High Voltage Safety Monitor System for Electric Vehicle Application

2013 ◽  
Vol 2013 ◽  
pp. 1-12
Author(s):  
Qiang Jiaxi ◽  
Yang Lin ◽  
He Jianhui ◽  
Zhou Qisheng
Keyword(s):  
Electric Vehicle ◽  
High Voltage ◽  
Critical Issue ◽  
Monitor System ◽  
Equivalent Models ◽  
In Series ◽  
Remaining Capacity ◽  
Electric Parameters ◽  
Hardware In Loop ◽  
And Control

Batteries, as the main or assistant power source of EV (Electric Vehicle), are usually connected in series with high voltage to improve the drivability and energy efficiency. Today, more and more batteries are connected in series with high voltage, if there is any fault in high voltage system (HVS), the consequence is serious and dangerous. Therefore, it is necessary to monitor the electric parameters of HVS to ensure the high voltage safety and protect personal safety. In this study, a high voltage safety monitor system is developed to solve this critical issue. Four key electric parameters including precharge, contact resistance, insulation resistance, and remaining capacity are monitored and analyzed based on the equivalent models presented in this study. The high voltage safety controller which integrates the equivalent models and control strategy is developed. By the help of hardware-in-loop system, the equivalent models integrated in the high voltage safety controller are validated, and the online electric parameters monitor strategy is analyzed and discussed. The test results indicate that the high voltage safety monitor system designed in this paper is suitable for EV application.

Design of Automatic High-Voltage Capacitor Charging System

2014 ◽  
Vol 530-531 ◽  
pp. 1119-1125
Author(s):  
Jia Zhi Yang ◽  
Sheng Li Yi ◽  
Fei Yang ◽  
Xi Le Wang ◽  
Fan Yang
Keyword(s):  
High Voltage ◽  
Control Algorithm ◽  
Storage Device ◽  
Voltage Measurement ◽  
Loop Control ◽  
Charging System ◽  
System A ◽  
Fiber Optical ◽  
And Control ◽  
Measurement And Control

A high precision, rapid and automatic high-voltage capacitor charging system is needed for pulse power system. A charging system based on high-voltage capacitor bank as energy storage device and c8051f020 MCU as control system, is designed in this paper .The hardware of this system includes a voltage measurement and control circuit, operation and display screen circuit, optical coupling circuit, fiber optical transceiver circuit. The software of this system uses closed-loop control algorithm to control the motor of voltage regulator, and the voltage of high voltage capacitor is charged from 0 to 20KV. By analyzing for the data of experimental and adopt the method of curve fitting, a modified voltage control algorithm is established. The modified algorithm improves the accuracy of charged voltage for high voltage capacitor to more than 99%.

Magnetic Noise in Induction Motors

2008 ◽  
Author(s):  
Radu S. Curiac ◽  
Sumit Singhal
Keyword(s):  
Induction Motor ◽  
High Voltage ◽  
Induction Motors ◽  
Mechanical Design ◽  
Magnetic Noise ◽  
Noise Generation ◽  
Design Phase ◽  
Coil Design ◽  
Noise Data ◽  
And Control

Noise in large high voltage induction motors (500Hp–18000Hp) may be airborne or magnetic in nature. Usually, large high voltage induction motors are custom built and tailored to meet customer’s demand. Since every motor is unique in its design, it is imperative to predict accurately the magnetic noise generation during design phase, this way avoiding expensive rework cost and not loosing the customer confidence. Stator – rotor mechanical design, along with careful electrical coil design, can significantly cut down magnetic noise in an induction motor. This paper discusses the various causes and control of magnetic noise in large induction motors. Theoretical noise predictions in large induction motors, along with measured experimental noise data, are presented.

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