Journal ArticleDOI
Active Gate Control in Half-Bridge Inverters Using Programmable Gate Driver ICs to Improve Both Surge Voltage and Converter Efficiency
Reads0
Chats0
TLDR
It is verified that the proposed active gate control can effectively improve the tradeoff relationship between the surge voltage and switching loss of the pulsewidth modulation half-bridge inverter circuit.Abstract:
The requirements for peripheral circuits of power converters are becoming more restrictive due to the enhancement of Si-based power devices and due to practical use of SiC device. In the design of modern high-speed switching converters, the stray inductances and capacitances both in the device package and in the gate drive circuit in addition to those in the main circuit of the power converter must be considered. In these situations, the gate driving technique represents the key technology for enhancement of high-speed switching ability of power devices, as there are design limitations to reduce the stray inductances and capacitances. So far, several active gate control methods have been proposed. Most conventional active gate drivers are configured using analog circuits such as transistors and diodes. Thus, it is difficult to reconfigure their control parameters to fit the stray inductances and capacitances after the implementation of power converter and gate circuits. As a solution to these problems, the authors have proposed a programmable gate driver IC, which is a digitally controlled circuit. This gate driver IC can control the gate current at 63 separate levels, operated by programmable fully digital 12-bit and clock signals. In this paper, an active gate current control based on the load current in a half-bridge inverter with two programmable gate driver ICs is demonstrated. This developed gate control is different to the general current feedback control followed the reference value. It is verified that the proposed active gate control can effectively improve the tradeoff relationship between the surge voltage and switching loss of the pulsewidth modulation half-bridge inverter circuit.read more
Citations
More filters
Journal ArticleDOI
Optimization Platform to Find a Switching Pattern of Digital Active Gate Drive for Reducing Both Switching Loss and Surge Voltage
TL;DR: Experimental results show that the proposed optimization system is able to obtain optimal switching pattern from $64^{60}$ possible combinations of switching patterns within 15 min, which is 6 times faster than the previous study.
Proceedings ArticleDOI
Voltage Balancing Control for Series Connected MOSFETs Based on Time Delay Adjustment Under Start-Up and Steady-State Operations
Keiji Wada,Katsuya Shingu +1 more
TL;DR: A voltage balancing control strategy for series-connected SiC MOSFETs under steady state and start-up conditions using digital control circuits based on a digital circuit, where controlling the voltage balancing under any conditions can be achieved.
Proceedings ArticleDOI
Load Current and Temperature Dependent Optimization of Active Gate Driving Vectors
Toru Sai,Koutaro Miyazaki,Hidemine Obara,Tomoyuki Mannen,Keiji Wada,Ichiro Omura,Makoto Takamiya,Takayasu Sakurai +7 more
TL;DR: In this paper, a load current and temperature dependent optimization of the active gate driving waveforms is proposed to always solve the trade-off between the switching loss and the current/voltage overshoot of power transistors under load currents and temperature variations.
Journal ArticleDOI
Self-Adaptive Active Gate Driver for IGBT Switching Performance Optimization Based on Status Monitoring
TL;DR: A self-adaptive active gate driver (SAGD) is proposed to further optimize IGBT switching performance, which is particularly suitable for applications where the load current varies over time or the dc bus voltage is changed.
Proceedings ArticleDOI
Stop-and-Go Gate Drive Minimizing Test Cost to Find Optimum Gate Driving Vectors in Digital Gate Drivers
Toru Sai,Koutaro Miyazaki,Hidemine Obara,Tomoyuki Mannen,Keiji Wada,Ichiro Omura,Takayasu Sakurai,Makoto Takamiya +7 more
TL;DR: In this paper, a stop-and-go gate drive with only one variable is proposed to solve the trade-off between the switching loss and the current/voltage overshoot of power transistors.
References
More filters
Journal ArticleDOI
Active gate voltage control of turn-on di/dt and turn-off dv/dt in insulated gate transistors
TL;DR: In this article, an active gate voltage control (AGVC) method is presented to control the values of at turnon and at turn-off for insulated gate power transistors, by acting directly on the input gate voltage shape.
Journal ArticleDOI
A di/dt Feedback-Based Active Gate Driver for Smart Switching and Fast Overcurrent Protection of IGBT Modules
TL;DR: In this paper, an active gate driver (AGD) was proposed for IGBT modules to improve their overall performance under normal condition as well as fault condition, which has the capability of reducing the switching loss, delay time, and Miller plateau duration during turn-on and turnoff transient without sacrificing current and voltage stress.
Closed-Loop di/dt and dv/dt IGBT Gate Driver
Yanick Lobsiger,Johann W. Kolar +1 more
TL;DR: In this paper, a closed-loop IGBT gate driver using simple passive diC /dt and dvCE /dt feedbacks and employing a single analog PI-controller is proposed.
Journal ArticleDOI
General-Purpose Clocked Gate Driver IC With Programmable 63-Level Drivability to Optimize Overshoot and Energy Loss in Switching by a Simulated Annealing Algorithm
Koutarou Miyazaki,Seiya Abe,Masanori Tsukuda,Ichiro Omura,Keiji Wada,Makoto Takamiya,Takayasu Sakurai +6 more
TL;DR: An automatic optimization by simulated annealing algorithm is introduced to fully utilize the benefit of the gate driver, and the further reduction of IC overshoot and the energy loss are achieved over the manual optimization.
Journal ArticleDOI
Shaping High-Power IGBT Switching Transitions by Active Voltage Control for Reduced EMI Generation
TL;DR: In this article, active voltage control is applied and improved successfully to define IGBT switching dynamics with a smoothed Gaussian waveform, which can suppress high-frequency spectrum of EMI emissions.