主持项目三十余项，合作方包括：中国电力科学研究院、江苏省电力科学研究院、国网江苏省电力公司、南瑞继保、上海空间电源研究所、上海卫星工程研究所等。部分主持项目如下：
1. 多端口模块化直流固态变压器集成优化及功率协调控制研究，国家自然科学基金青年项目，主持
2. 基于模块化多电平原理的多端口直流固态变压器及控制研究，江苏省自然科学基金青年项目，主持
3. 基于模块化多电平的多端直流固态变压器关键技术研究，省重点实验室项目，主持
4. 面向柔性直流配电网的模块化直流固态变压器控制研究，江苏省配电网智能技术与装备协同创新中心，主持
5. 随机性电源建模仿真及异构互联环境下即插即用接入技术及耦合机理研究，民品横向科研项目，主持
6. PL17充电机技术开发，民品横向科研项目，主持
7. 同步调相机响应特性仿真模型开发，民品横向科研项目，主持
8. 基于大规模绿电接入的港口混合供能系统优化运行研究，民品横向科研项目，主持
9. 考虑规模化大功率电动汽车充放电接入的配电网多时间尺度智能运行调控技术研究，民品横向科研项目，主持
10. 含ChaoJi充电的内河港区柔性资源聚合与优化运行研究及应用，民品横向科研项目，主持
11. 高比例分布式新能源电网动态自适应低频减载技术 ，民品横向科研项目，主持
12. 多元储能电站参与多场景应用的控制特征及效果评价功能完善服务 ，民品横向科研项目，主持
13. 5MW离网制氢电源装置技术开发，民品横向科研项目，主持
发表SCI/EI检索学术期刊论文50余篇，部分期刊论文：
(1) Zhendong Ji, Lei Hua, Jia Yao, Xiangfeng Sun, Research on control strategy of cascaded power electronic transformer based on capacitance minimization, Energy Reports, 2022, 8(S12) (SCIE);
(2) Zhendong Ji, Jintao Zhang, Dongye Li, Yichao Sun, Jianhua Wang, Jianfeng Zhao, A pre-charging strategy based on composite frequency control for a modular multilevel DC transformer, Energy Reports, 2022, 8(S5) (SCIE);
(3) Zhendong Ji, Rui Rao, Qiantong Wang, Dongye Li, Yichao Sun, Jianhua Wang, Jianfeng Zhao, Soft-starting scheme for a DC solid-state transformer based on a modular multilevel converter, Energy Reports, 2021, 7(S6) (SCIE);
(4) Zhendong Ji, Qiantong Wang, Dongye Li, Yichao Sun, Fast DC-Bias Current Control of Dual Active Bridge Converters With Feedforward Compensation, IEEE Transactions on Circuits and Systems II: Express Briefs, 2020,67(11):2587-2591(SCIE)
(5) Zhendong Ji, Wei Liu. Open-circuit fault detection for three-phase inverter based on backpropagation neural network, Neural Computing and Applications, 2019, 31(9): 4665–4674 (SCIE);
(6) Zhendong Ji, Jianfeng Zhao, Yichao Sun, Xiaojun Yao, Ze’an Zhu, Fault-Tolerant control of cascaded H-Bridge converters using double zero-sequence voltage injection and DC voltage optimization, Journal of Power Electronics, 2014, 14(05):1-10 (SCIE);
(7) Cheng Jin, Zhendong Ji, Kangli Liu, Wenzhe Chen, Jianfeng Zhao, A Region-Folding Electromagnetic Transient Simulation Approach for Large-Scale Power Electronics System, IEEE Transactions on Power Electronics, 2023,38(8):9755-9766(SCIE)
(8) Cheng Jin, Kangli Liu, Jianfeng Zhao, Zhendong Ji, Wenzhe Chen, Multiarea Hybrid Equivalent for Power Electronics System,IEEE Transactions on Power Electronics, 2023,38(10):12331-12336(SCIE)
(9) Dongye Li, Zhendong Ji, Jianfeng Zhao, Yichao Sun, Shuzheng Wang, Xijun Ni, Hierarchical voltage balancing method for MMC based on DCSM, IET Power Electronics, 2022, 15(14) (SCIE);
(10) Dongye Li, Yichao Sun, Jianfeng Zhao, Zhendong Ji, Shengqi Zhang, Multi-module capacitor voltage measuring technique of modular multilevel converters based on sampling instant classification, Measurement, 2021, 186. (SCIE);
(11) D. Lyu, Y. Sun, C. A. Teixeira, Z. Ji, J. Zhao, Q. Wang, A Modular Multilevel Dual Buck Inverter With Adjustable Discontinuous Modulation, IEEE Access, 2020,8: 31693-31709(SCIE)
(12) Dongye Li, Zhendong Ji, Yichao Sun, Jianfeng Zhao, Chi Zhang, Four-port solid-state transformer based on hybrid MMC with enhanced dual half-bridge submodules, IET Power Electronics, 2020,13(12) (SCIE);
(13) Dongye Li, Zhendong Ji, Yichao Sun, Jianfeng Zhao, Jiaxing Lei, Yue Yue, Improved hybrid modular multilevel converter with enhanced fault ride-through capability and fast pre-charging strategies, IET Power Electronics, 2019, 12(6) (SCIE);
(14) Jianhua Wang, Shang Gao, Yichao Sun, Zhendong Ji,Lexiang Cheng, Lingyu Li, Wei Gu, Jianfeng Zhao, Single Phase Bidirectional H6 Rectifier/Inverter,IEEE Transactions on Power Electronics, 2019, 34(11): 10710-10719(SCIE)
(15) Dongye Li, Yichao Sun, Shengqi Zhang, Zhendong Ji, Yue Yue, Jianfeng Zhao,Jun You,Master–slave structure-based capacitor voltage measuring technique for hybrid modular multilevel converters,2018, 11(14) (SCIE);
(16) Jianhua Wang, Fangfang Luo, Zhendong Ji, Yichao Sun, Baojian Ji, Wei Gu, Jianfeng Zhao, An Improved Hybrid Modulation Method for the Single-Phase H6 Inverter With Reactive Power Compensation, IEEE Transactions on Power Electronics, 2018, 33(9): 7674-7683(SCIE);
(17) Jianhua Wang, Fangfang Luo, Qing Duan, Zhendong Ji, Binshi Gu, Jun You, Wei Gu, Jianfeng Zhao, Power electronic transformer with adaptive PLL technique for voltage-disturbance ride through, Journal of Modern Power Systems and Clean Energy, 2018, 6(5)(SCIE);
(18) 季振东,朱述超,许光强,等. 基于PRBS的中压直流系统宽频阻抗测量装置及其控制 [J/OL]. 电力系统自动化, 1-14.(EI);
(19) 季振东,王亚祥,李东野,等. 电力电子变压器参与配电网调压调频的应用研究 [J]. 太阳能学报, 2024, 45 (06): 182-190. (EI);
(20) 刘威,季振东,孙毅超,等. 基于双频功率回路的星形级联H桥STATCOM不平衡补偿研究 [J]. 中国电机工程学报, 2023, 43 (09): 3527-3538. (EI);
(21) 季振东, 孙毅超, 金成, 王建华, 赵剑锋. 三角形级联固态变压器的多直流电压平衡控制, 电力自动化设备，2018, 38(9): 54-61(EI);
(22) 孙毅超,季振东,李东野,等. 集中式多电平调制策略的状态机型脉冲分配器设计与实现 [J]. 中国电机工程学报, 2017, 37 (16): 4758-4768+4901. (EI);
(23) 季振东，李东野，孙毅超，赵剑锋，黄云凯，一种三相级联型电力电子变压器及其控制策略研究，电机与控制学报，2016,(08):32-39+47 (EI);
(24) 季振东，孙毅超，李东野，赵剑锋，黄允凯，星形和三角形连接的链式H桥STATCOM的不平衡补偿分析，高电压技术，2015，41(7):2435 ~ 2444 (EI);
(25) 季振东，赵剑锋，孙毅超，姚晓君，朱泽安，零序和负序电压注入的级联型并网逆变器直流侧电压平衡控制，中国电机工程学报，2013，33(21)：9 ~ 17 (EI);
(26) 季振东，赵剑锋，孙毅超，姚晓君，朱泽安，刘巍，三角形连接的链式H桥并网逆变器相间直流侧电压平衡控制，电工技术学报，2013，28(12)：191 ~ 198 (EI);