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Current harmonics of voltage-source active rectifier with random switching frequency
-phase voltage-source active rectifiers when the switching frequency of the devices is random; it is not an integer multiple of the supply frequency (50 Hz). The first part applyto both the switching frequency<...
JA - Elektronika a optoelektronika, elektrotechnika
- 2014 •
- D
Rok uplatnění
D - Stať ve sborníku
Controller of electric drive with asynchronous motor using DTC with constant switching frequency
The device uses a direct torque control with a constant switching frequency. The use of a PWM modulator in the control circuit assures the constant switching frequency and therefore, extraordinary EMC properties....
JA - Elektronika a optoelektronika, elektrotechnika
- 2010 •
- Gfunk
Rok uplatnění
Gfunk - Funkční vzorek
Optimalization of switching frequency in PWM controllers of DC motors.
The article solves switching frequency optimalization problem when PWM full bridge controllers for DC separately excited motors are used. Switching frequency optimalization problem is solved using multicriterial pr...
KA - Vojenství
- 2005 •
- D
Rok uplatnění
D - Stať ve sborníku
High-Power Converter Operating at Switching Frequency 100kHz
This article deals with a concept of high-power converter operating at switching frequency 100kHz. Due to the high switching frequency it was necessary to eliminate some parasitic effects occurring. This converter ...
JA - Elektronika a optoelektronika, elektrotechnika
- 2011 •
- D
Rok uplatnění
D - Stať ve sborníku
Restrictions on switching losses of traction converter with middle-frequency transformer
Simulation of traction device, which consists of the indirect frequency converter, middle-frequency transformer and output rectifier. The article explained the method of special management of equipment that aims to reduce the sw...
JA - Elektronika a optoelektronika, elektrotechnika
- 2009 •
- O
Rok uplatnění
O - Ostatní výsledky
Minimization of switching frequency oscillation of voltage inverter
Pulse-width modulations for voltage inverters of medium and higher output are proposed minimising the oscillations of the switching frequency and reducing the pulsations of current and torque of induction motors fed from them....
JA - Elektronika a optoelektronika, elektrotechnika
- 2011 •
- Jx
Rok uplatnění
Jx - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)
Software for simulation of switched circuits
Switched circuits will be quite frequently a part of various modern electronic systems for signal processing or part of switched power supplies. At present new electonic blocks have appeared on the market and their usage in swit...
JA - Elektronika a optoelektronika, elektrotechnika
- 2003 •
- Jx
Rok uplatnění
Jx - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)
Parasitic effects of pulsed high-power inverters
This article deals with parasitic effects of a pulse con-verter 16kW operating at a very high switching frequency (100kHz). These parasitic effects are negligible at tradi-tional lower switching frequencies....
JA - Elektronika a optoelektronika, elektrotechnika
- 2012 •
- D
Rok uplatnění
D - Stať ve sborníku
Analysis of Switched Circuits in Program Micro-Cap 9
This paper deals with the time and frequency domain analysis of switched circuits in program Micro-Cap 9. It focuses on the circuits with externally clocked switches where the characteristic representatives are switched...
JA - Elektronika a optoelektronika, elektrotechnika
- 2007 •
- D
Rok uplatnění
D - Stať ve sborníku
A contribution to switching frequency optimalization in PWM controllers of DC motors.
The paper deals with PWM full bridge controlling of DC motors. The solved problem is influence of voltage switching frequency to current ripple in armature circuit. Current ripple causes additional power looses and leads to system e...
KA - Vojenství
- 2005 •
- D
Rok uplatnění
D - Stať ve sborníku
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